General Description
The MAX1963A/MAX1976A low-dropout linear regula-
tors operate from a +1.62V to +3.6V supply and deliver
a guaranteed 300mA continuous load current with a low
100mV dropout. The high-accuracy (±0.5%) output
voltage is preset to an internally trimmed voltage in the
+0.75V to +3.0V range. An active-low, open-drain reset
output remains asserted for at least 2.2ms (MAX1963A)
or 70ms (MAX1976A) after the output voltage reaches
regulation. These devices are offered in thin SOT23 and
thin DFN packages. An internal pMOS pass transistor
allows the low supply current to remain independent of
load and dropout voltage, making these devices ideal for
portable battery-powered equipment.
Applications
Notebook/Handheld Computers
Cellular/Smart/PDA Phones
DSC, CD/MP3 Players
PCMCIA Cards
Features
♦Low 1.62V Minimum Input Voltage
♦Guaranteed 300mA Output Current
♦±2.5% Accuracy Over Load/Line/Temp
♦Low 100mV Dropout at 300mA Load
♦2.2ms (MAX1963A) or 70ms (MAX1976A)
RESET Output Flag
♦Supply Current Independent of Load and
Dropout Voltage
♦Logic-Controlled Shutdown
♦Thermal-Overload and Short-Circuit Protection
♦Preset Output Voltages (0.75V to 3.0V)
♦Tiny 6-Pin Thin SOT23 Package (<1.1mm High)
♦TDFN Package (<0.8mm High)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-3684; Rev 0; 5/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART* TEMP RANGE PIN-PACKAGE
MAX1963AEZT_ _ _-T -40°C to +85°C 6 Thin SOT23-6
MAX1963AETT_ _ _-T -40°C to +85°C 6 TD FN -6 3mm x 3m m
MAX1963AETA_ _ _-T -40°C to +85°C 8 TD FN -8 2mm x 2m m
MAX1976AEZT_ _ _-T -40°C to +85°C 6 Thin SOT23-6
MAX1976AETT_ _ _-T -40°C to +85°C 6 TD FN -6 3mm x 3m m
MAX1976AETA_ _ _-T -40°C to +85°C 8 TD FN -8 2mm x 2m m
TOP VIEW
TDFN
3mm x 3mm
I.C.
OUT
RESET GND
IN
SHDN
123
654
MAX1963A
MAX1976A
GND
RESET
SHDN
16OUT
IN
MAX1963A
MAX1976A
THIN SOT23
2
34
I.C.
5
TDFN
2mm x 2mm
N.C.
I.C.
OUT
N.C.
IN
SHDN
123
RESET
4
876
GND
5
MAX1963A
MAX1976A
Pin Configurations
*Insert the desired three-digit suffix (see the Selector Guide) into
the blanks to complete the part number. Contact the factory for
other output voltages.
Selector Guide appears at end of data sheet.
MAX1963A
MAX1976A
INPUT
1.62V TO 3.6V
COUT
4.7µF
ON
OFF
IN
CIN
1µF
UP TO
300mA
SHDN
GND
OUTPUT
0.75V TO 3.0V
LOGIC
SUPPLY
100kΩ
TO µC
OUT
RESET
Typical Operating Circuit
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA= -40°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, SHDN, RESET to GND .....................................-0.3V to +4.0V
OUT to GND ................................................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (TA= +70°C)
6-Pin SOT23 (derate 9.1mW/°C above +70°C)............727mW
6-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW
8-Pin TDFN (derate 11.9mW/°C above +70°C) ........953.5mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature..................................................... +150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Voltage VIN 1.62 3.60 V
Input Undervoltage Lockout VUVLO VIN rising or falling
(180mV typical hysteresis) 1.30 1.60 V
Output Voltage Accuracy IOUT = 1mA to 300mA,
VIN = (VOUT + 0.5V) to +3.6V -2.5 ±0.5 +2.5 %
Maximum Output Current IOUT Continuous 300 mARMS
Current Limit ILIM VOUT = 96% of nominal value 450 550 650 mA
No load 70 140
IOUT = 300mA 90
Ground Current IQ
Dropout (Note 2) 70
µA
Dropout Voltage VIN - VOUT IOUT = 300mA, VOUT ≥ 1.8V (Note 2) 100 200 mV
Load Regulation ∆VLDR IOUT = 1mA to 300mA 0.02 0.3 %
Line Regulation ∆VLNR VIN = (VOUT + 0.5V) to +3.6V, IOUT = 1mA -0.15 +0.01 +0.15 % / V
Output Noise 10Hz to 100kHz, IOUT = 10mA, VOUT = 1.5V 86 µVRMS
PSRR f < 1kHz, IOUT = 10mA 70 dB
SHUTDOWN
TA = +25°C 0.001 1
Shutdown Supply Current IOFF SHDN = GND TA = +85°C 0.01 µA
VIH VIN = 1.62V to 3.6V 1.4
SHDN Input Logic Levels VIL VIN = 1.62V to 3.6V 0.6 V
TA = +25°C 1 100
SHDN Input Bias Current ISHDN VSHDN = 0 or 3.6V TA = +85°C 5 nA
Turn-On Delay From SHDN high to OUT high, VOUT = 1.8V 90 µs
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
_______________________________________________________________________________________ 3
Note 1: Limits are 100% production tested at TA= +25°C. Limits over the operating temperature range are guaranteed by design.
Note 2: The dropout voltage is defined as VIN - VOUT, when VOUT is 4% lower than the value of VOUT when VIN = VOUT + 0.5V.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
RESET OUTPUT
Reset Threshold Accuracy VOUT falling (1.7% typical hysteresis) 80 82.5 85 %VOUT
I RESET = 100µA 1 100
RESET Output Low Voltage VOL VIN = +1.0V, I RESET = 100µA 30 400 mV
TA = +25°C 0.001 1
RESET Output High Leakage IOH V RESET = 3.6V,
RESET not asserted TA = +85°C 0.01 µA
MAX1963A 2.2 3.2 5.5
Reset Delay tRP From VOUT high to RESET
rising MAX1976A 70 100 160 ms
THERMAL PROTECTION
Thermal-Shutdown Temperature T SHDN +165 °C
Thermal-Shutdown Hysteresis ∆T SHDN 15 °C
Typical Operating Characteristics
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA= +25°C, unless otherwise noted.)
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX1963/76 toc01
LOAD CURRENT (mA)
OUTPUT VOLTAGE ACCURACY (%)
25020015010050
-0.1
0
0.1
0.2
-0.2
0300
VOUT = +3.0V VOUT = +1.5V
VOUT = +0.75V
OUTPUT VOLTAGE ACCURACY
vs. INPUT VOLTAGE
MAX1963/76 toc02
INPUT VOLTAGE (V)
OUTPUT VOLTAGE ACCURACY (%)
3.02.62.21.8
-0.25
0
0.25
0.50
-0.50
1.4 3.4
IOUT = 300mA
IOUT = 100mA
IOUT = 0mA
VOUT = 1.5V
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
MAX1963/76 toc03
TEMPERATURE (°C)
OUTPUT VOLTAGE ACCURACY (%)
603510-15
-1.0
-0.5
0
0.5
1.0
1.5
-1.5
-40 85
VOUT = +1.5V
IOUT = 0mA, 100mA, 300mA
ELECTRICAL CHARACTERISTICS (continued)
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA= -40°C to +85°C, unless otherwise
noted. Typical values are at TA= +25°C.) (Note 1)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
4 _______________________________________________________________________________________
GROUND-PIN CURRENT
vs. LOAD CURRENT
MAX1963/76 toc04
LOAD CURRENT (mA)
GROUND-PIN CURRENT (µA)
1001100.1
70
80
90
100
110
120
60
0.01 1000
VOUT = +3.0V
VOUT = +0.75V
VOUT = +1.5V
GROUND-PIN CURRENT
vs. INPUT VOLTAGE
MAX1963/76 toc05
INPUT VOLTAGE (V)
GROUND-PIN CURRENT (µA)
3.22.82.42.01.6
20
40
60
80
100
120
0
1.2 3.6
IOUT = 100mA
IOUT = 300mA
IOUT = 0mA
VOUT = 1.5V
GROUND-PIN CURRENT
vs. TEMPERATURE
MAX1963/76 toc06
TEMPERATURE (°C)
GROUND-PIN CURRENT (µA)
6040200-20
60
70
80
90
100
110
120
50
-40 80
IOUT = 100mA
IOUT = 300mA
IOUT = 0mA
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1963/76 toc07
LOAD CURRENT (mA)
VDROPOUT (mV)
25020015010050
40
20
60
80
100
120
0
0300
VOUT = +1.8V
VOUT = +3.0V
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX1963/76 toc08
FREQUENCY (kHz)
PSRR (dB)
100101
10
20
30
40
50
60
70
80
0
0.1 1000
VOUT = +0.75V
VOUT = +1.5V
VOUT = +3.0V
IOUT = 10mA
LINE-TRANSIENT RESPONSE
MAX1963/76 toc09
40µs/div
VIN 500mV/div
1.5V
10mV/div
AC-COUPLED
VOUT
3.5V
Typical Operating Characteristics (continued)
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA= +25°C, unless otherwise noted.)
LINE-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1963/76 toc10
40µs/div
VIN 500mV/div
1.5V
10mV/div
AC-COUPLED
VOUT
1.8V
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
_______________________________________________________________________________________ 5
LOAD-TRANSIENT RESPONSE
MAX1963/76 toc11
20µs/div
200mA/div
20mV/div
AC-COUPLED
200mA
VOUT
IOUT
20mA
VIN = 3.6V
VOUT = 1.5V
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
MAX1963/76 toc12
20µs/div
200mA/div
20mV/div
AC-COUPLED
200mA
VOUT
VIN = 1.8V
VOUT = 1.5V
IOUT
20mA
Typical Operating Characteristics (continued)
(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA= +25°C, unless otherwise noted.)
SHUTDOWN RESPONSE
MAX1963/76 toc13
100µs/div
1V/div
500mV/div
VOUT
0
0
VSHDN
MAX1963/76 toc14
40ms/div
1V/div
1V/div
1V/div
VOUT
0
0
0
VSHDN
VRESET
MAX1976A
SHUTDOWN/RESET RESPONSE
MAX1963/76 toc15
200ms/div
2V/div
1V/div
1V/div
VOUT
VIN
0
0
0
VRESET
MAX1976A
LINE/RESET RESPONSE
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
6 _______________________________________________________________________________________
Pin Description
PIN
THIN
SOT23
6-PIN
TDFN
(3mm x 3mm)
8-PIN
TDFN
(2mm x 2mm)
NAME FUNCTION
16 8IN
Regulator Input. Supply voltage can range from +1.62V to +3.6V. Bypass IN
with at least a 1µF ceramic capacitor to GND (see the Capacitor Selection and
Regulator Stability section).
2 — — GND Ground. GND also functions as a heatsink. Solder to a large pad or circuit-
board ground plane to maximize SOT23 power dissipation.
— 4 5 GND Ground
35 6SHDN Active-Low Shutdown Input. A logic-low reduces supply current to below 1µA.
Connect to IN or logic-high for normal operation.
43 4RESET
Open-Drain, Active-Low Reset Output. RESET rises 3.2ms (MAX1963A) or
100ms (MAX1976A) after the output has achieved regulation. RESET falls
immediately if VOUT drops below 82.5% of its nominal voltage, or if the
MAX1963A/MAX1976A are shut down.
5 2 3 I.C. Internally Connected. Leave floating or connect to GND.
6 1 1 OUT Regulator Output. Sources up to 300mA. Bypass with a 4.7µF low-ESR
ceramic capacitor to GND.
— — 2, 7 N.C. No Connection. Not internally connected.
—Exposed
Pad —EP
Ground. EP also functions as a heatsink. Solder EP to a large pad or circuit-
board ground plane to maximize TDFN power dissipation.
MAX1963A
MAX1976A
IN
GND
SHDN
SHUTDOWN
LOGIC
THERMAL
SENSOR REF 82.5%
REF
TIMER
ERROR
AMP
MOS DRIVER
WITH ILIMIT
OUT
RESET
P
Figure 1. Functional Diagram
Detailed Description
The MAX1963A/MAX1976A are low-dropout, high-accu-
racy, low-quiescent-current linear regulators designed
primarily for battery-powered applications. These devices
supply loads up to 300mA and are available with preset
output voltages from +0.75V to +3.0V. As illustrated in
Figure 1, the MAX1963A/MAX1976A consist of a refer-
ence, an error amplifier, a p-channel pass transistor, an
internal feedback voltage-divider, and a power-good
comparator.
The reference is connected to the error amplifier, which
compares this reference with the feedback voltage and
amplifies the difference. If the feedback voltage is
lower than the reference voltage, the pass-transistor
gate is pulled lower, which allows more current to pass
to the output and increases the output voltage. If the
feedback voltage is too high, the pass-transistor gate is
pulled up, allowing less current to pass to the output.
Internal p-Channel Pass Transistor
The MAX1963A/MAX1976A feature a 0.33Ω(RDS(ON))
p-channel MOSFET pass transistor. Unlike similar
designs using pnp pass transistors, p-channel
MOSFETs require no base drive, which reduces quies-
cent current. The pnp-based regulators also waste con-
siderable current in dropout when the pass transistor
saturates and use high base-drive currents under large
loads. The MAX1963A/MAX1976A do not suffer from
these problems and consume only 90µA (typ) of quies-
cent current under heavy loads, as well as in dropout.
Shutdown
Pull SHDN low to enter shutdown. During shutdown, the
output is disconnected from the input, an internal 1.5kΩ
resistor pulls OUT to GND, RESET is actively pulled
low, and the supply current drops below 1µA.
RESET
Output
The MAX1963A/MAX1976A microprocessor (µP) supervi-
sory circuitry asserts a guaranteed logic-low reset during
power-up, power-down, and brownout conditions down
to +1V. RESET asserts when VOUT is below the reset
threshold and remains asserted for at least tRP after VOUT
rises above the reset threshold of regulation.
Current Limit
The MAX1963A/MAX1976A monitor and control the pass
transistor’s gate voltage, limiting the output current to
450mA (min). If the output exceeds ILIM, the MAX1963A/
MAX1976A output voltage drops.
Thermal-Overload Protection
Thermal-overload protection limits total power dissipa-
tion in the MAX1963A/MAX1976A. When the junction
temperature exceeds TJ= +165°C, a thermal sensor
turns off the pass transistor, allowing the IC to cool. The
thermal sensor turns the pass transistor on again after
the junction temperature cools by 15°C, resulting in a
pulsed output during continuous thermal-overload con-
ditions. Thermal-overload protection safeguards the
MAX1963A/MAX1976A in the event of fault conditions.
For continuous operation, do not exceed the absolute
maximum junction-temperature rating of TJ= +150°C.
Operating Region and Power Dissipation
The MAX1963A/MAX1976A maximum power dissipa-
tion depends on the thermal resistance of the IC pack-
age and circuit board, the temperature difference
between the die junction and ambient air, and the rate
of airflow. The power dissipated in the device is P =
IOUT ✕(VIN - VOUT). The maximum allowed power dissi-
pation is:
PMAX = (TJ(MAX) - TA) / (θJC + θCA)
where (TJ(MAX) - TA) is the temperature difference
between the MAX1963A/MAX1976A die junction and
the surrounding air, θJC is the thermal resistance of the
junction to the case, and θCA is the thermal resistance
from the case through the PC board, copper traces,
and other materials to the surrounding air. For best
heatsinking, expand the copper connected to the
exposed paddle or GND.
The MAX1963A/MAX1976A deliver up to 300mA and
operate with an input voltage up to +3.6V. However,
when using the 6-pin SOT23 version, high output cur-
rents can only be sustained when the input-output dif-
ferential voltage is less than 2V, as shown in Figure 2.
The maximum allowed power dissipation for the 6-pin
TDFN is 1.951W at TA= +70°C. Figure 3 shows that the
maximum input-output differential voltage is not limited
by the TDFN package power rating.
Applications Information
Capacitor Selection and
Regulator Stability
Capacitors are required at the MAX1963A/MAX1976A
input and output for stable operation over the full tem-
perature range and with load currents up to 300mA.
Connect a 1µF ceramic capacitor between IN and GND
and a 4.7µF low-ESR ceramic capacitor between OUT
and GND. The input capacitor (CIN) lowers the source
impedance of the input supply. Use larger output
capacitors to reduce noise and improve load-transient
response, stability, and power-supply rejection.
The output capacitor’s equivalent series resistance
(ESR) affects stability and output noise. Use output
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
_______________________________________________________________________________________ 7
MAX1963A/MAX1976A
capacitors with an ESR of 30mΩor less to ensure sta-
bility and optimize transient response. Surface-mount
ceramic capacitors have very low ESR and are com-
monly available in values up to 10µF. Connect CIN and
COUT as close to the MAX1963A/MAX1976A as possi-
ble to minimize the impact of PC board trace induc-
tance.
Noise, PSRR, and Transient Response
The MAX1963A/MAX1976A are designed to operate
with low dropout voltages and low quiescent currents in
battery-powered systems while still maintaining good
noise, transient response, and AC rejection. See the
Typical Operating Characteristics for a plot of Power-
Supply Rejection Ratio (PSRR) versus Frequency.
When operating from noisy sources, improved supply-
noise rejection and transient response can be achieved
by increasing the values of the input and output bypass
capacitors and through passive filtering techniques.
The MAX1963A/MAX1976A load-transient response
(see the Typical Operating Characteristics) shows two
components of the output response: a near-zero DC
shift from the output impedance due to the load-current
change, and the transient response. A typical transient
response for a step change in the load current from 20mA
to 200mA is 20mV. Increasing the output capacitor’s value
and decreasing the ESR attenuates the overshoot.
Input-Output (Dropout) Voltage
A regulator’s minimum input-output voltage difference
(dropout voltage) determines the lowest usable supply
voltage. In battery-powered systems, this determines the
useful end-of-life battery voltage. Because the
MAX1963A/MAX1976A use a p-channel MOSFET pass
transistor, the dropout voltage is a function of drain-to-
source on-resistance (RDS(ON) = 0.33Ω) multiplied by
the load current (see the Typical Operating
Characteristics).
VDROPOUT = VIN - VOUT = 0.33Ω✕IOUT
The MAX1963A/MAX1976A ground current reduces to
70µA in dropout.
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
8 _______________________________________________________________________________________
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
(VIN - VOUT) (V)
MAXIMUM OUTPUT CURRENT (mA)
2.52.01.51.00.5
100
200
300
400
0
0 3.0
MAXIMUM RECOMMENDED
OUTPUT CURRENT 6-PIN SOT23
TA = +85°C
TA = +70°C
Figure 2. Power Operating Regions for the 6-Pin SOT23:
Maximum Output Current vs. Input Voltage
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
(VIN - VOUT) (V)
MAXIMUM OUTPUT CURRENT (mA)
2.52.01.51.00.5
100
200
300
400
0
0 3.0
MAXIMUM RECOMMENDED
OUTPUT CURRENT 6-PIN TDFN 3mm x 3mm
TA = +85°C
Figure 3. Power Operating Regions for the 6-Pin TDFN:
Maximum Output Current vs. Input Voltage
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
_______________________________________________________________________________________ 9
Chip Information
TRANSISTOR COUNT: 2556
PROCESS: BiCMOS
MAX1963A
TOP MARK
MAX1976A
TOP MARK
VOUT (V)
SUFFIX
SOT TDFN
(3mm x 3mm)
TDFN
(2mm x 2mm)
SOT TDFN
(3mm x 3mm)
TDFN
(2mm x 2mm)
0.75 075 AACJ ALM —AACU ALX —
0.85 085 — — — AACV ALY —
0.90 090 AACK ALN —AACW ALZ —
1.00 100 AACL ALO —AACX AMA —
1.10 110 AACM ALP —AACY AMB —
1.20 120 AACN ALQ —AACZ AMC —
1.30 130 AACO ALR —AADA AMD AAD
1.50 150 AACP ALS —AADB AME AAE
1.60 160 — — — AADC AMF —
1.80 180 AACQ ALT —AADD AMG —
1.85 185 AACR ALU —AADE AMH —
2.50 250 AACS ALV —AADF AMI —
2.85 285 — — — AADG AMJ —
3.00 300 AACT ALW —AADH AMK —
Selector Guide
Note: Standard voltage options, shown in bold, are available. Contact the factory for other output voltages between 1.5V and 4.5V.
Minimum order quantity is 15,000 units.
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
10 ______________________________________________________________________________________
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
______________________________________________________________________________________ 11
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
12 ______________________________________________________________________________________
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
6, 8, &10L, DFN THIN.EPS
L
CL
C
PIN 1
INDEX
AREA
D
E
L
e
L
A
e
E2
N
G
1
2
21-0137
PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
-DRAWING NOT TO SCALE-
k
e
[(N/2)-1] x e
REF.
PIN 1 ID
0.35x0.35
DETAIL A
b
D2
A2
A1
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
______________________________________________________________________________________ 13
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
COMMON DIMENSIONS
SYMBOL MIN. MAX.
A0.70 0.80
D2.90 3.10
E2.90 3.10
A1 0.00 0.05
L0.20 0.40
PKG. CODE ND2 E2 eJEDEC SPEC b[(N/2)-1] x e
PACKAGE VARIATIONS
0.25 MIN.k
A2 0.20 REF.
2.30±0.101.50±0.106T633-1 0.95 BSC MO229 / WEEA 1.90 REF0.40±0.05
1.95 REF0.30±0.05
0.65 BSC
2.30±0.108T833-1
2.00 REF0.25±0.05
0.50 BSC
2.30±0.1010T1033-1
2.40 REF0.20±0.05- - - -
0.40 BSC
1.70±0.10 2.30±0.1014T1433-1
1.50±0.10
1.50±0.10
MO229 / WEEC
MO229 / WEED-3
0.40 BSC - - - - 0.20±0.05 2.40 REFT1433-2 14 2.30±0.101.70±0.10
T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF
T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF
T833-3 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF
-DRAWING NOT TO SCALE-
G2
2
21-0137
PACKAGE OUTLINE, 6,8,10 & 14L,
TDFN, EXPOSED PAD, 3x3x0.80 mm
DOWNBONDS
ALLOWED
NO
NO
NO
NO
YES
NO
YES
NO
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE
21-0168 2
1
A
8L TDFN EXPOSED PAD, 2x2x0.80mm
8L TDFN EXPOSED PADS EPS
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
14 ______________________________________________________________________________________
MAX1963A/MAX1976A
Low-Input-Voltage, 300mA LDO Regulators
with
RESET
in SOT and TDFN
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15
© 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
SYMBOL
COMMON DIMENSIONS
2.101.90
0.80
MAX.
0.70
MIN.
0.20 REF.
0.40
0.05
2.10
0.20
0.00
1.90
D
A
L
A1
E
A2
k
NO
DOWNBONDS
ALLOWED
1.30±0.10 1.50 REF
[(N/2)-1] x e
0.25±0.05
b
MO229
JEDEC SPEC
0.50 TYP.
e
PACKAGE VARIATIONS
PKG. CODE
0.70±0.10
E2D2
8
N
T822-1
0.25 MIN.
PACKAGE OUTLINE
21-0168 2
2
A
8L TDFN EXPOSED PAD, 2x2x0.80mm
