NJM2370
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LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL
GENERAL DESCRIPTION PACKAGE OUTLINE
The NJM2370 is a low dropout voltage regulator with
ON/OFF control.
It features dropout voltage of 0.1V at IO=30mA, low
output noise and high ripple rejection by connecting an
external capacitor to noise bypass terminal.
It’s suitable for portable items such as cellular phones,
video camera and others.
FEATURES
Output Current (150mA min. (VO-0.3V))
Low Dropout Voltage (0.1V typ. (IO=30mA))
External Capacitor for Noise Bypass
ON / OFF Control Function
Over Current Limit
Thermal Shutdown
Bipolar Technology
Package Outline SOT-89 (5pin), VSP8
PIN CONFIGURATION
EQUIVALENT CIRCUIT
NJM2370U NJM2370R
NJM2370U NJM2370R
PIN FUNCTION
1. CONTROL
2. GND
3. NOISE BYPASS
4. VOUT
5. VIN
PIN FUNCTION
1. CONTROL
2. GND
3. NC
4. NOISE BYPASS
5. VOUT
6. NC
7. NC
8. VIN
NJM2370
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ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER SYMBOL RATINGS UNIT
Input Voltage VIN 20 V
Control Voltage VCONT 20 (note 1) V
Power Dissipation PD (SOT-89) 350
(VSP8) 320 mW
Operating Temperature Range Topr -40 to +85 °C
Storage Temperature Range Tstg -40 to +125 °C
(note 1) When input voltage is less than +20V, the absolute maximum control voltage is equal to the input voltage.
ELECTRICAL CHARACTERISTICS (Ta=25°C)
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Output Voltage VO V
IN=VO+1V, IO=30mA -3% - +3% V
Quiescent Current 1 IQ1 IO=0mA, expect ICONT - 180 - µA
Quiescent Current 2 IQ2 CONTROL-GND short - - 100 nA
Output Current IO (VO-0.3V) 150 180 - mA
Line Regulation VO / VIN V
IN=(VO+1V) to (VO+6V)
VO=2V to 14V
- - 0.12 % / V
V
IN=(VO+1V) to (VO+5V)
VO=15V
- - 0.12 % / V
Load Regulation VO / IO I
O=0 to 60mA - - 0.03 % / mA
Dropout Voltage VI-O I
O=30mA - 0.1 0.3 V
Ripple Rejection R·R f=400Hz, ein=100mVP-P
VIN= VO+1.5V, IO=10mA
- 60 - dB
Average Temperature
Coefficient of Output Voltage
VO / Ta Ta=-20 to 75°C, IO=10mA
VIN=VO+1.5V
- 0.2 - mV / °C
Output Noise Voltage VNO 10Hz < f < 80kHz, IO=10mA, VO=3V - 30 - µVrms
(note 2) Please confirm the specification separately because some parameters depend on output voltage.
TEST CIRCUIT
NJM2370
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TYPICAL APPLICATION
(1) In Nonuse of ON / OFF Control
Connect control terminal (1Pin) to VIN terminal (5Pin)
When a resistance “R” is connected, the quiescent current decreases, but minimum operating voltage increases.
Please refer to a figure of Output Voltage vs. Control Voltage.
(2) In Use of ON / OFF CONTROL
When the control terminal is “H”, it is ON.
When the control terminal is “L” or “open”, it is OFF.
*Noise bypass Capacitance Cp
Noise bypass capacitance CP reduces noise generated by band-gap reference circuit.
Noise level and ripple rejection will be improved when larger CP is used. Please refer to the typical characteristics to
determine the value.
Use of smaller CP value may induce oscillation.
Please make sure to use CP value of greater than 0.1uF to avoid the problem.
NJM2370
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1,
2 Output voltage rank
(Please refer to output voltag
e
rank list)
3 Plant code. (NJM2370 is “A”)
4 Last digit of the calendar year
5,
6 Lot Number
PACKAGE MARKING
OUTPUT VOLTAGE RANK LIST
Marking
Output
Voltage Part Number
1
2
2.0V NJM2370X02 0 2
2.1V NJM2370X21 2 1 (*1)
2.2V NJM2370X22 2 2 (*1)
2.3V NJM2370X23 2 3 (*1)
2.4V NJM2370X24 2 4 (*1)
2.5V NJM2370X25 2 5
2.6V NJM2370X26 2 6 (*1)
2.7V NJM2370X27 2 7
2.8V NJM2370X28 2 8 (*1)
2.9V NJM2370X29 2 9 (*1)
3.0V NJM2370X03 0 3
3.1V NJM2370X31 3 1
3.2V NJM2370X32 3 2 (*1)
3.3V NJM2370X33 3 3
3.5V NJM2370X35 3 5
(*1) : SOT-89 (5pin) ONLY
(*2) : VSP8 ONLY
POWER DISSIPATION VS. AMBIENT TEMPERATURE
Marking
Output
Voltage Part Number
1
2
3.6V NJM2370X36 3 6 (*1)
3.7V NJM2370X37 3 7 (*1)
3.8V NJM2370X38 3 8 (*1)
3.9V NJM2370X39 3 9 (*1)
4.0V NJM2370X04 0 4
4.7V NJM2370X47 4 7
5.0V NJM2370X05 0 5
6.0V NJM2370X06 0 6
8.0V NJM2370X08 0 8 (*1)
9.0V NJM2370X09 0 9
10.0V NJM2370X10 1 0
12.0V NJM2370X12 1 2
13.0V NJM2370X13 1 3 (*2)
15.0V NJM2370X15 1 5
NJM2370
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TYPICAL CHARACTERISTICS
NJM2370U03 / R03 Dropout Voltage NJM2370U03 / R03 Load Regulation
NJM2370U03/R03 GND Current
vs. Output Current
NJM2370U03/R03 Dropout Voltage
vs. Output Current
NJM2370
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TYPICAL CHARACTERISTICS
NJM2370U03/R03 Output Noise Voltage vs. Noise Bypass Capacitor
NJM2370U03/R03 Ripple Rejection vs. Frequency
NJM2370U03 / R03 Control Current
vs. Control Voltage
NJM2370U03 / R03 Output Voltage
vs. Control Voltage
NJM2370
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TYPICAL CHARACTERISTICS
Dropout Voltage vs. Ambient Temperature
On Control Voltage vs. Temperature
Thermal Shutdown
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
NJM2370U03 / R03 Control Current
vs. Ambient Temperature
NJM2370U03 / R03 Quiescent Current 1
vs. Ambient Temperature