S-1323 Series
www.sii-ic.com
HIGH RIPPLE-REJECTION AND SMALL PACKAGE
CMOS VOLTAGE REGULATOR
© Seiko Instruments Inc., 2002-2010 Rev.5.0_00
Seiko Instruments Inc. 1
The S-1323 Series is a positive voltage regulator with a low dropout voltage, high output voltage accuracy, and
low current consumption developed based on CMOS technology.
A built-in low on-resistance transistor provides a low dropout voltage and large output current, and a built-in
overcurrent protector prevents the load current from exceeding the current capacitance of the output transistor.
An ON/OFF circuit ensures a long battery life. Compared with the voltage regulators using the conventional
CMOS process, a larger variety of capacitors are available, including small ceramic capacitors. Small SNT-4A
and SC-82AB packages realize high-density mounting.
Features
• Output voltage: 1.5 V to 5.5 V, selectable in 0.1 V steps.
• High-accuracy output voltage: ±1.0%
• Low current consumption: During operation: 70 μA typ., 90 μA max.
During shutdown: 0.1 μA typ., 1.0 μA max.
• High peak current capability: 150 mA output is possible (at VIN ≥ VOUT(S) + 1.0 V)*1
• Built-in ON/OFF circuit: Ensures long battery life.
• Low ESR capacitor can be used: A ceramic capacitor of 1.0 μF or more can be used for the output
capacitor.
• High ripple rejection: 70 dB typ. (at 1.0 kHz)
• Built-in overcurrent protector: Overcurrent of output transistor can be restricted.
• Lead-free, Sn 100%, halogen-free*2
*1. Attention should be paid to the power dissipation of the package when the output current is large.
*2. Refer to “ Product Name Structure” for details.
Applications
• Power supply for battery-powered devices
• Power supply for personal communication devices
• Power supply for home electric/electronic appliances
• Power supply for cellular phones
Packages
• SNT-4A
• SC-82AB
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
2 Seiko Instruments Inc.
Block Diagram
VIN
VSS
VOUT
Overcurrent
protector
Reference
voltage circuit
ON/OFF
*1. Parasitic diode
*1
ON/OFF
circuit
+
−
Figure 1
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 3
Product Name Structure
The product types, output voltage and package types for the S-1323 Series can be selected at the user’s
request. Refer to the “1. Product name” for the meanings of the characters in the product name, “2.
Package” regarding the package drawings and “3. Product name list” for the full product names.
1. Product name
S-1323 x xx xx − xxx TF x
Out put voltage
15 to 55
(e.g. when the output voltage i s 1.5 V, it is ex pressed
as 15.
)
Package nam e (abbreviati on)
PF: SNT-4A
NB: SC-82AB
Envir onmental c ode
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales offi c e)
Product type*3
A: ON/ OFF pi n negat ive logi c
B: ON/ OFF pi n positi ve logic
IC direction in tape specifications*1
Product name ( abbreviation)*2
*1. Refer to the tape specifications at the end of this book.
*2. Refer to the product name list.
*3. Refer to 3. Shutdown (ON/OFF pin) under the Operation.
2. Package
Drawing Code
Package Name Package Tape Reel Land
SNT-4A PF004-A-P-SD PF004-A-C-SD PF004-A-R-SD PF004-A-L-SD
SC-82AB NP004-A-P-SD NP004-A-C-SD
NP004-A-C-S1 NP004-A-R-SD －
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
4 Seiko Instruments Inc.
3. Product name list
Table 1
Output Voltage SNT-4A SC-82AB
1.5V±1.0% S-1323B15PF-N8ATFx S-1323B15NB-N8ATFx
1.6V±1.0% S-1323B16PF-N8BTFx S-1323B16NB-N8BTFx
1.7V±1.0% S-1323B17PF-N8CTFx S-1323B17NB-N8CTFx
1.8V±1.0% S-1323B18PF-N8DTFx S-1323B18NB-N8DTFx
1.85V±1.0% S-1323B1JPF-N9PTFx −
1.9V±1.0% S-1323B19PF-N8ETFx S-1323B19NB-N8ETFx
2.0V±1.0% S-1323B20PF-N8FTFx S-1323B20NB-N8FTFx
2.1V±1.0% S-1323B21PF-N8GTFx S-1323B21NB-N8GTFx
2.2V±1.0% S-1323B22PF-N8HTFx S-1323B22NB-N8HTFx
2.3V±1.0% S-1323B23PF-N8ITFx S-1323B23NB-N8ITFx
2.4V±1.0% S-1323B24PF-N8JTFx S-1323B24NB-N8JTFx
2.5V±1.0% S-1323B25PF-N8KTFx S-1323B25NB-N8KTFx
2.6V±1.0% S-1323B26PF-N8LTFx S-1323B26NB-N8LTFx
2.7V±1.0% S-1323B27PF-N8MTFx S-1323B27NB-N8MTFx
2.8V±1.0% S-1323B28PF-N8NTFx S-1323B28NB-N8NTFx
2.85V±1.0% S-1323B2JPF-N9QTFx −
2.9V±1.0% S-1323B29PF-N8OTFx S-1323B29NB-N8OTFx
3.0V±1.0% S-1323B30PF-N8PTFx S-1323B30NB-N8PTFx
3.1V±1.0% S-1323B31PF-N8QTFx S-1323B31NB-N8QTFx
3.2V±1.0% S-1323B32PF-N8RTFx S-1323B32NB-N8RTFx
3.3V±1.0% S-1323B33PF-N8STFx S-1323B33NB-N8STFx
3.4V±1.0% S-1323B34PF-N8TTFx S-1323B34NB-N8TTFx
3.5V±1.0% S-1323B35PF-N8UTFx S-1323B35NB-N8UTFx
3.6V±1.0% S-1323B36PF-N8VTFx S-1323B36NB-N8VTFx
3.7V±1.0% S-1323B37PF-N8WTFx S-1323B37NB-N8WTFx
3.8V±1.0% S-1323B38PF-N8XTFx S-1323B38NB-N8XTFx
3.9V±1.0% S-1323B39PF-N8YTFx S-1323B39NB-N8YTFx
4.0V±1.0% S-1323B40PF-N8ZTFx S-1323B40NB-N8ZTFx
4.1V±1.0% S-1323B41PF-N9ATFx S-1323B41NB-N9ATFx
4.2V±1.0% S-1323B42PF-N9BTFx S-1323B42NB-N9BTFx
4.3V±1.0% S-1323B43PF-N9CTFx S-1323B43NB-N9CTFx
4.4V±1.0% S-1323B44PF-N9DTFx S-1323B44NB-N9DTFx
4.5V±1.0% S-1323B45PF-N9ETFx S-1323B45NB-N9ETFx
4.6V±1.0% S-1323B46PF-N9FTFx S-1323B46NB-N9FTFx
4.7V±1.0% S-1323B47PF-N9GTFx S-1323B47NB-N9GTFx
4.8V±1.0% S-1323B48PF-N9HTFx S-1323B48NB-N9HTFx
4.9V±1.0% S-1323B49PF-N9ITFx S-1323B49NB-N9ITFx
5.0V±1.0% S-1323B50PF-N9JTFx S-1323B50NB-N9JTFx
5.1V±1.0% S-1323B51PF-N9KTFx S-1323B51NB-N9KTFx
5.2V±1.0% S-1323B52PF-N9LTFx S-1323B52NB-N9LTFx
5.3V±1.0% S-1323B53PF-N9MTFx S-1323B53NB-N9MTFx
5.4V±1.0% S-1323B54PF-N9NTFx S-1323B54NB-N9NTFx
5.5V±1.0% S-1323B55PF-N9OTFx S-1323B55NB-N9OTFx
Remark 1. Please contact the SII marketing department for type A products.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 5
Pin Configurations
Table 2
Pin No. Symbol Description
1 VOUT Output voltage pin
2 VIN Input voltage pin
3 ON/OFF Shutdown pin
4 VSS GND pin
SNT-4A
Top view
1 4
2 3
Figure 2
Table 3
Pin No. Symbol Description
1 VOUT Output voltage pin
2 VSS GND pin
3 ON/OFF Shutdown pin
4 VIN Input voltage pin
4 3
1 2
SC-82AB
Top view
Figure 3
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
6 Seiko Instruments Inc.
Absolute Maximum Ratings
Table 4 (Ta = 25°C unless otherwise specified)
Item Symbol Absolute Maximum Rating Unit
VIN VSS−0.3 ∼ VSS+7 V
Input voltage VON/OFF VSS−0.3 ∼ VIN+0.3 V
Output voltage VOUT VSS−0.3 ∼ VIN+0.3 V
SNT-4A 300*1 mW
200 (When not mounted on board) mW
Power dissipation SC-82AB PD 400*1 mW
Operating ambient temperature Topr −40 ∼ +85 °C
Storage temperature Tstg −40 ∼ +125 °C
*1. When mounted on board
[Mounted board]
(1) Board size: 114.3 mm × 76.2 mm × t1.6 mm
(2) Board name: JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
(1) When mounted on board (2) When not mounted on board
0
50
100
150
400
200
0
Power Dissipat ion (P
D
) (m W)
Ambient Temper at ure ( Ta) (°C)
500
300
100
SNT-4A
SC-82AB
050
100
150
400
200
0
Power Diss ipat io n (P
D
) (mW)
Ambient Temper at ure ( Ta) (°C)
500
300
100
SC-82AB
Figure 4 Power Dissipation of Package
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 7
Electrical Characteristics
Table 5 (Ta = 25°C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit
Test
Circuit
Output voltage*1 VOUT(E) V
IN = VOUT(S) + 1.0 V, IOUT = 30 mA VOUT(S)
× 0.99 VOUT(S)
VOUT(S)
× 1.01 V 1
Output current*2 IOUT V
IN ≥ VOUT(S) + 1.0 V 150*5 ⎯ ⎯ mA 3
Dropout voltage*3 Vdrop I
OUT = 150 mA ⎯ 0.50 0.65 V 1
Line regulation OUTIN
OUT1
VVV
•
Δ
Δ VOUT(S) + 0.5 V ≤ VIN ≤ 6.5 V,
IOUT = 30 mA ⎯ 0.02 0.1 % / V 1
Load regulation ΔVOUT2 VIN = VOUT(S) + 1.0 V,
1.0 mA ≤ IOUT ≤ 150 mA ⎯ 20 40 mV 1
Output voltage
temperature coefficient*4 OUT
OUT
VTa
V
•Δ
Δ VIN = VOUT(S) + 1.0 V, IOUT = 30 mA,
−40°C ≤ Ta ≤ 85°C ⎯ ±100 ⎯ ppm/
°C 1
Current consumption
during operation ISS1 VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON,
no load ⎯ 70 90 μA 2
Current consumption
during shutdown ISS2 VIN = VOUT(S) + 1.0 V, ON/OFF pin = OFF,
no load ⎯ 0.1 1.0 μA 2
Input voltage VIN ⎯ 2.0 ⎯ 6.5 V ⎯
Shutdown pin
input voltage “H” VSH V
IN = VOUT(S) + 1.0 V, RL = 1.0 kΩ 1.5 ⎯ ⎯ V 4
Shutdown pin
input voltage “L” VSL V
IN = VOUT(S) + 1.0 V, RL = 1.0 kΩ ⎯ ⎯ 0.3 V 4
Shutdown pin
input current “H” ISH V
IN = 6.5 V, VON/OFF = 6.5 V −0.1 ⎯ 0.1 μA 4
Shutdown pin
input current “L” ISL V
IN = 6.5 V, VON/OFF = 0 V −0.1 ⎯ 0.1 μA 4
Ripple rejection RR VIN = VOUT(S) + 1.0 V, f = 1.0 kHz,
ΔVrip = 0.5 Vrms, IOUT = 30 mA ⎯ 70 ⎯ dB 5
Short-circuit current Ishort VIN = VOUT(S) + 1.0 V, ON/OFF pin = ON,
VOUT = 0 V ⎯ 250 ⎯ mA 3
*1. VOUT(S): Specified output voltage
VOUT(E): Actual output voltage at the fixed load
The output voltage when fixing IOUT(= 30 mA) and inputting VOUT(S) + 1.0 V
*2. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the output current.
*3. Vdrop = VIN1 − (VOUT3 × 0.98)
V
OUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 150 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input
voltage.
*4. The change in temperature [mV/°C] is calculated using the following equation.
[] [] []
1000Cppm/
VTaV
VVCmV/
Ta
V OUT
OUT
OUT(S)
OUT ÷°
•Δ
Δ
×=°
Δ
Δ3*2**1
*1. The change in temperature of the output voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
*5. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to the
power dissipation of the package when the output current is large.
This specification is guaranteed by design.
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
8 Seiko Instruments Inc.
Test Circuits
1.
VSS
VOUT
ON/OFF
Set to
power ON
VIN
V
A
+
+
Figure 5
2.
VSS
VOUT
ON/OFF
Set to
VIN or GND
VIN
A
+
Figure 6
3.
Set to
power ON
VSS
VOUT
ON/OFF
VIN
V
A
+
+
Figure 7
4.
VSS
VOUT
ON/OFF
VIN
A V RL
+ +
Figure 8
5.
VSS
VOUT
ON/OFF
VIN
V
+
Set to
Power ON
RL
Figure 9
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 9
Standard Circuit
ON/OFF
VSS
VOUTVIN
CIN
*1
CL
*2
Input Output
GND
Single GND
*1. CIN is a capacitor for stabilizing the input.
*2. A ceramic capacitor of 1.0 μF or more can be used in CL.
Figure 10
Caution The above connection diagram and constant will not guarantee successful operation.
Perform thorough evaluation using the actual application to set the constant.
Application Conditions
Input capacitor (CIN): 1.0 μF or more
Output capacitor (CL): 1.0 μF or more
ESR of output capacitor: 10 Ω or less
Caution A general series regulator may oscillate, depending on the external components selected.
Check that no oscillation occurs with the application using the above capacitor.
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
10 Seiko Instruments Inc.
Explanation of Terms
1. Low dropout voltage regulator
The low dropout voltage regulator is a voltage regulator whose dropout voltage is low due to its built-in
low on-resistance transistor.
2. Low ESR
A capacitor whose ESR (Equivalent Series Resistance) is low. The S-1323 Series enables use of a low
ESR capacitor, such as a ceramic capacitor, for the output-side capacitor CL. A capacitor whose ESR is
10 Ω or less can be used.
3. Output voltage (VOUT)
The accuracy of the output voltage is ensured at ±1.0% under the specified conditions of fixed input
voltage*1, fixed output current, and fixed temperature.
*1. Differs depending the product.
Caution If the above conditions change, the output voltage value may vary and exceed the
accuracy range of the output voltage. Please see the electrical characteristics and
attached characteristics data for details.
4.
OUTIN V ΔV
ΔV
OUT1
regulation Line ⎟
⎟
⎠
⎞
⎜
⎜
⎝
⎛
•
Indicates the dependency of the output voltage on the input voltage. That is, the values show how much
the output voltage changes due to a change in the input voltage with the output current remaining
unchanged.
5. Load regulation (ΔVOUT2)
Indicates the dependency of the output voltage on the output current. That is, the values show how
much the output voltage changes due to a change in the output current with the input voltage remaining
unchanged.
6. Dropout voltage (Vdrop)
Indicates the difference between the input voltage VIN1, which is the input voltage (VIN) at the point where
the output voltage has fallen to 98% of the output voltage value VOUT3 after VIN was gradually decreased
from VIN = VOUT(S) + 1.0 V, and the output voltage at that point (VOUT3 × 0.98).
Vdrop = VIN1 − (VOUT3 × 0.98)
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 11
7. ⎟
⎠
⎞
⎜
⎝
⎛
•Δ
Δ
OUT
OUT
V Ta
V
voltageoutput oft coefficien eTemperatur
The shadowed area in Figure 11 is the range where VOUT varies in the operating temperature range
when the temperature coefficient of the output voltage is ±100 ppm/°C.
V
OUT
(
E
)
*1
Ex. S-1323B28 Typ.
−40 25
+
0.28 mV/°C
V
OUT
[V]
*1. V
OUT(E)
is the value of the output voltage measured at 25°C.
85 Ta [°C]
−
0.28 mV/°C
Figure 11
A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
[] [] []
1000Cppm/
VTaV
VVCmV/
Ta
V OUT
OUT
OUT(S)
OUT ÷°
•Δ
Δ
×=°
Δ
Δ3*2**1
*1. Change in temperature of output voltage
*2. Specified output voltage
*3. Output voltage temperature coefficient
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
12 Seiko Instruments Inc.
Operation
1. Basic operation
Figure 12 shows the block diagram of the S-1323 Series.
The error amplifier compares the reference voltage (Vref) with Vfb, which is the output voltage resistance-
divided by feedback resistors Rs and Rf. It supplies the output transistor with the gate voltage necessary
to ensure a certain output voltage free of any fluctuations of input voltage and temperature.
Reference voltage
circuit
VOUT
*1
*1. Parasitic diode
VSS
VIN
Rs
R
f
Error
am plifier
Current
supply
Vref −
+
Vfb
Figure 12
2. Output transistor
The S-1323 Series uses a low on-resistance P-channel MOS FET as the output transistor.
Be sure that VOUT does not exceed VIN + 0.3 V to prevent the voltage regulator from being damaged due
to inverse current flowing from VOUT pin through a parasitic diode to VIN pin.
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 13
3. Shutdown pin (ON/OFF pin)
This pin starts and stops the regulator.
When the ON/OFF pin is set to the shutdown level, the operation of all internal circuits stops, and the built-
in P-channel MOS FET output transistor between the VIN pin and VOUT pin is turned off to substantially
reduce the current consumption. The VOUT pin becomes the VSS level due to the internally divided
resistance of several hundreds kΩ between the VOUT pin and VSS pin.
The structure of the ON/OFF pin is as shown in Figure 13. Since the ON/OFF pin is neither pulled down
nor pulled up internally, do not use it in the floating state. In addition, note that the current consumption
increases if a voltage of 0.3 V to VIN – 0.3 V is applied to the ON/OFF pin. When the ON/OFF pin is not
used, connect it to the VSS pin if the logic type is “A” and to the VIN pin if it is “B”.
Table 6
Logic Type ON/OFF Pin Internal Circuits VOUT Pin Voltage Current Consumption
A “L”: Power on Operating Set value ISS1
A “H”: Power off Stopped VSS level ISS2
B “L”: Power off Stopped VSS level ISS2
B “H”: Power on Operating Set value ISS1
VSS
ON/OFF
VIN
Figure 13
Selection of Output Capacitor (CL)
The S-1323 Series requires an output capacitor between the VOUT and VSS pins for phase compensation. A
ceramic capacitor with a capacitance of 1.0 μF or more can be used. Even if using an OS capacitor, tantalum
capacitor, or aluminum electrolytic capacitor, a capacitance of 1.0 μF or more and an ESR of 10 Ω or less are
required.
The value of the output overshoot or undershoot transient response varies depending on the value of the output
capacitor.
When selecting the output capacitor, perform sufficient evaluation, including evaluation of temperature
characteristics, on the actual device.
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
14 Seiko Instruments Inc.
Precautions
• Wiring patterns for the VIN, VOUT and GND pins should be designed so that the impedance is low.
When mounting an output capacitor between the VOUT and VSS pins (CL) and a capacitor for stabilizing
the input between VIN and VSS pins (CIN), the distance from the capacitors to these pins should be as
short as possible.
• Note that the output voltage may increase when a series regulator is used at low load current (1.0 mA or
less).
• Generally a series regulator may cause oscillation, depending on the selection of external parts. The
following conditions are recommended for this IC. However, be sure to perform sufficient evaluation
under the actual usage conditions for selection, including evaluation of temperature characteristics.
Input capacitor (CIN): 1.0 μF or more
Output capacitor (CL): 1.0 μF or more
Equivalent series resistance (ESR): 10 Ω or less
• The voltage regulator may oscillate when the impedance of the power supply is high and the input
capacitor is small or an input capacitor is not connected.
• The application conditions for the input voltage, output voltage, and load current should not exceed the
package power dissipation.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in
electrostatic protection circuit.
• In determining the output current, attention should be paid to the output current value specified in Table
5 in the electrical characteristics and footnote *5 of the table.
• SII claims no responsibility for any disputes arising out of or in connection with any infringement by
products including this IC of patents owned by a third party.
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 15
Characteristics (Typical Data)
(1) Output Voltage vs. Output current (when load current increases)
S-1323B15 (Ta = 25°C) S-1323B30 (Ta = 25°C)
VOUT [V]
400
2.0
1.5
1.0
0.5
00 100 200 300
VIN = 1.8 V
2.0 V
2.5 V
6.5 V
VOUT [V]
VIN = 3.3 V
3.5 V
4.0 V
6.5 V
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
00 100 200 300 400
IOUT [mA] IOUT [mA]
S-1323B50 (Ta = 25°C)
VOUT [V]
0 100 200 300 400
VIN = 5.3 V
5.5 V
6.0 V
6.5 V
6
5
4
3
2
1
0
IOUT [mA]
Remark In determining the output current, attention
should be paid to the following.
1) The minimum output current value and
footnote *5 in the electrical characteristics
2) The package power dissipation
(2) Output voltage vs. Input voltage
S-1323B15 (Ta = 25°C) S-1323B30 (Ta = 25°C)
VOUT [V]
1.60
1.55
1.50
1.45
1.40
IOUT = 1 mA
30 mA
50 mA
3.53.0
2.5 2.0 1.5 1.0
VOUT [V]
3.10
3.05
3.00
2.95
2.90
IOUT = 1 mA
30 mA
50 mA 5.04.5
4.0 3.53.02.5
VIN [V] VIN [V]
S-1323B50 (Ta = 25°C)
VOUT [V]
50 mA
5.10
5.05
5.00
4.95
4.90 7.06.5
6.0 5.5 5.0 4.5
IOUT = 1 mA
30 mA
VIN [V]
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
16 Seiko Instruments Inc.
(3) Dropout voltage vs. Output current
S-1323B15 S-1323B30
Vdrop [V]
0
50
100 150
200
–40°C
25°C
85°C
0.6
0.5
0.4
0.3
0.2
0.1
0
Vdrop [V]
0
50 100
150
200
–40°C
25°C
85°C
0.6
0.5
0.4
0.3
0.2
0.1
0
IOUT [mA] IOUT [mA]
S-1323B50
Vdrop [V]
0
50
100 150
200
–40°C
25°C
85°C
0.6
0.5
0.4
0.3
0.2
0.1
0
IOUT [mA]
(4) Output voltage vs. Ambient temperature
S-1323B15 S-1323B30
VOUT [V]
20
–20 60
–40 0 40 80
1.60
1.55
1.50
1.45
1.40 100
VOUT [V]
20–20 60
–40 0 40 80
3.10
3.05
3.00
2.95
2.90 100
Ta [°C] Ta [°C]
S-1323B50
VOUT [V]
–40 –20 0 20 40 60 10080
5.10
5.05
5.00
4.95
4.90
Ta [°C]
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 17
(5) Current consumption vs. Input voltage
S-1323B15 S-1323B30
ISS1 [μA]
6
4
2
0
–
40°C
25°C 85°C
120
100
80
60
40
20
0 8
ISS1 [μA]
–
40°C
25°C 85°C
4 8 6
2
0
120
100
80
60
40
20
0
VIN [V] VIN [V]
S-1323B50
ISS1 [μA]
8
120
100
80
60
40
20
0 0 2 4 6
–
40°C
85°C
25°C
VIN [V]
(6) Ripple rejection
S-1323B15 (Ta = 25°C) S-1323B30 (Ta = 25°C)
VIN = 2.5 V, COUT = 1.0 μF VIN = 4.0 V, COUT = 1.0 μF
Ripple Rejection [dB]
100 1k 10k 100k
10
IOUT = 1 mA
30 m
A
150 m
1M
100
80
60
40
20
0
Ripple Rejection [dB]
100 1k 10k 100k 10
150 m
IOUT = 1 mA
30 m
1M
100
80
60
40
20
0
Frequency [Hz] Frequency [Hz]
S-1323B50 (Ta = 25°C)
VIN = 6.0 V, COUT = 1.0 μF
Ripple Rejection [dB]
100 1k 10k 100k
10
150 m
A
IOUT = 1 mA
30 m
A
1M
100
80
60
40
20
0
Frequency [Hz]
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
S-1323 Series Rev.5.0_00
18 Seiko Instruments Inc.
Reference Data
(1) Input transient response characteristics
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 0.47 μF, CIN = 0 μF IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 1.0 μF, CIN = 0 μF
VOUT [V]
3.04
3.03
3.02
3.01
3.00
2.99
2.98
6
5
4
3
2
1
0
VIN
VOUT
-20
-10
0
10
20
30 40
50
60
70
80
VIN [V]
VOUT [V]
3.04
3.03
3.02
3.01
3.00
2.99
2.98
6
5
4
3
2
1
0
VIN
VOUT
-20 -10 010 20 30
40
50
60
70
80
VIN [V]
t [μs] t [μs]
IOUT = 30 mA, tr = tf = 5.0 μs, COUT = 2.2 μF, CIN = 0 μF
VOUT [V]
3.04
3.03
3.02
3.01
3.00
2.99
2.98
6
5
4
3
2
1
0
VIN
VOUT
-20
-10
0
10
20
30 40
50
60
70
80
VIN [V]
t [μs]
(2) Load transient response characteristics
VIN = 4.0 V, COUT = 0.47 μF, CIN = 1.0 μF, IOUT = 50↔100 mA VIN = 4.0 V, COUT = 1.0 μF, CIN = 1.0 μF, IOUT = 50↔100 mA
VOUT [V]
0
2
4
6 8
10
12
14
-4
-2
16
I
OUT
V
OUT
3.20
3.15
3.10
3.05
3.00
2.95
2.90
150
100
50
0
–50
–100
–150
IOUT [mA]
VOUT [V]
0 2 4 6
8
10
12
14
-4 -2 16
I
OUT
V
OUT
3.20
3.15
3.10
3.05
3.00
2.95
2.90
150
100
50
0
–50
–100
–150
IOUT [mA]
t [μs] t [μs]
VIN = 4.0 V, COUT = 2.2 μF, CIN = 1.0 μF, IOUT = 50↔100 mA
VOUT [V]
0
2
4
6 8
10
12
14
-4
-2
16
I
OUT
V
OUT
3.20
3.15
3.10
3.05
3.00
2.95
2.90
150
100
50
0
–50
–100
–150
IOUT [mA]
t [μs]
HIGH RIPPLE-REJECTION AND SMALL PACKAGE CMOS VOLTAGE REGULATOR
Rev.5.0_00 S-1323 Series
Seiko Instruments Inc. 19
(3) Shutdown pin transient response characteristics
S-1323B15 (Ta = 25°C) S-1323B30 (Ta = 25°C)
VIN = 2.5 V, tr = tf = 1.0 μs, COUT = 1.0 μF, CIN = 1.0 μF VIN = 4.0 V, tr = tf = 1.0 μs, COUT = 1.0 μF, CIN = 1.0 μF
VOUT [V]
VON/OFF
VOUT
0 5 10 15 20 25 30 35
-10 -5 40
3
2
1
0
–1
–2
–3
2.5
2.0
1.5
1.0
0.5
0
–0.5
VON/OFF [V]
VOUT [V]
VON/OFF
VOUT
0 5 10 15 20 25 30 35
-10 -5 40
6
4
2
0
–2
–4
–6
5
4
3
2
1
0
–1
VON/OFF [V]
t [μs] t [μs]
S-1323B50 (Ta = 25°C)
VIN = 6.0 V, tr = tf = 1.0 μs, COUT = 1.0 μF, CIN = 1.0 μF
VOUT [V]
7
6
5
4
3
2
1
0
–1
8
6
4
2
0
–2
–4
–6
–8
VON/OFF
VOUT
0 5 10 15 20 25 30 35
-10 -5 40
VON/OFF [V]
t [μs]
1.2±0.04
0.65
0.2±0.05
0.48±0.02
0.08
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
SNT-4A-A-PKG Dimensions
PF004-A-P-SD-4.0
No. PF004-A-P-SD-4.0
+0.05
-0.02
12
3
4
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
PF004-A-C-SD-1.0
SNT-4A-A-Carrier Tape
Feed direction
4.0±0.1
2.0±0.05
4.0±0.1
ø1.5 +0.1
-0
ø0.5
1.45±0.1 0.65±0.05
0.25±0.05
1
2
34
5°
No. PF004-A-C-SD-1.0
+0.1
-0
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY. 5,000
No. PF004-A-R-SD-1.0
PF004-A-R-SD-1.0
Enlarged drawing in the central part
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
SNT-4A-A-Reel
No.
TITLE
SCALE
UNIT mm
SNT-4A-A-Land Recommendation
Seiko Instruments Inc.
PF004-A-L-SD-3.0
No. PF004-A-L-SD-3.0
0.3
0.35
0.3
0.52
1.16
0.52
Caution Making the wire pattern under the package is possible. However, note that the package
may be upraised due to the thickness made by the silk screen printing and of a solder
resist on the pattern because this package does not have the standoff.
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
0.3 +0.1
-0.05
0.4 +0.1
-0.05
0.05
12
43
0.16+0.1
-0.06
1.3±0.2
2.0±0.2
No. NP004-A-P-SD-1.1
SC82AB-A-PKG Dimensions
NP004-A-P-SD-1.1
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
1.1±0.1
0.2±0.05
4.0±0.1
2.0±0.05
4.0±0.1
2.2±0.2
(0.7)
No. NP004-A-C-SD-3.0
NP004-A-C-SD-3.0
SC82AB-A-Carrier Tape
Feed direction
12
34
ø1.05±0.1
ø1.5 +0.1
-0
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
No. NP004-A-C-S1-2.0
NP004-A-C-S1-2.0
SC82AB-A-Carrier Tape
4.0±0.1 2.0±0.1
4.0±0.1 ø1.05±0.1
0.2±0.05
1.1±0.1
Feed direction
2.3±0.15
12
34
ø1.5 +0.1
-0
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
QTY. 3,000
(60°)
(60°)
ø13±0.2
12.5max.
9.0±0.3
No. NP004-A-R-SD-1.1
NP004-A-R-SD-1.1
SC82AB-A-Reel
Enlarged drawing in the central part
www.sii-ic.com
• The information described herein is subject to change without notice.
• Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
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