NJM2370
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NJM2370_databook00_01
LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL
■ GENERAL DESCRIPTI ON ■ 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 capaciter 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 Capaciter for Noise Bypass
● ON/OFF Control Function
● Over Current Limit
● Thermal Shutdown
● Bipolar Technology
● Package Outline SOT-89(5pin), VSP8
■ PIN CONFIGURATION
5 4
1 2 3
1
2
3
4 5
6
7
8
NJM2370U NJM2370R
■ EQUIVALENT CIRCUIT
VOUT
GND
VIN
Thermal
Protection
Bandgap
Reference
NOISE
BYPASS
CONT
PIN FUNCTIO N
1. CONTROL
2. GND
3. NOISE BYPASS
4. VOUT
5. VIN
NJM2370U NJM2370R
PIN FUNCTIO N
1. CONTRO L
2. GND
3. NC
4. NOI SE BYPASS
5. VOUT
6. NC
7. NC
8. VIN
NJM2370
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NJM2370_databook00_01
■ 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)
(VSP8) 350
320 mW
Operating Temperature Range Topr −40 ∼ +85 °C
Storage Temperature Range Tstg −40 ∼ +125 °C
(note 1)When input voltage is less than +20V, the absolute maximum
control volt age is equal to the input v olt age.
■ ELECTRICAL CHARACTERISTICS (Ta=25°C)
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT
Output Voltage Vo VIN=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
VIN=(Vo+1V) ∼ (Vo+6V)
Vo=2V to 14V − − 0.12 %/V
Line Regulation ∆Vo/∆VIN
VIN=(Vo+1V) ∼ (Vo+5V)
Vo=15V − − 0.12 %/V
Load Regulation ∆Vo/∆Io Io=0 ∼ 60mA − − 0.03 %/mA
Dropout Voltage ∆VI-O Io=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 Out put
Voltage
∆Vo/∆Ta Ta=−20 ∼ 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
+
VIN
VIN V
OUT
CONTROL NOISE
BYPASS
GND
+
0.1µF
IIN
ICONT
VCONT
Cp
10µF
IOUT VOUT
V
V
A
A
NJM2370
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NJM2370_databook00_01
■ TYPICAL APPLI CATION
① In Nonuse of ON/OFF Cont rol
ＮＪＭ2370
+
VIN V
OUT
CONTROL NOISE
BYPASS
GND
+
0.1µF
Cp=0.1µF
10µF
VOUT
VIN
R
(0～300kΩ)
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
ＮＪＭ2370
+
VIN V
OUT
CONTROL NOISE
BYPASS
GND
+
0.1µF
Cp=0.1µF
10µF
VOUT
VIN
R
When the control terminal is “H”, it is ON.
When the control terminal is “L” or “open”, it is OFF.
✱Noise bypass Capacit ance 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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NJM2370_databook00_01
■ PACKAGE MARKI NG
0 5 A
7 0 1
5 4
3 2 1
➀
➁
➂
➃
➄
➅
1 2 3 4
5 6 7
8
A
➂ 0
➀ 5
➁
7
➃ 0
➄ 1
➅
J R C
■ OUTPUT VOLTAGE RANK LIST
Marking Marking
Output
Voltage Part Number ➀ ➁ Output
Voltage Part Number ➀ ➁
2.0V NJM2370X02 0 2 3.6V NJM2370X36 3 6 (✱1)
2.1V NJM2370X21 2 1
(✱1) 3.7V NJM2370X37 3 7 (✱1)
2.2V NJM2370X22 2 2
(✱1) 3.8V NJM2370X38 3 8 (✱1)
2.3V NJM2370X23 2 3
(✱1) 3.9V NJM2370X39 3 9 (✱1)
2.4V NJM2370X24 2 4
(✱1) 4.0V NJM2370X04 0 4
2.5V NJM2370X25 2 5
4.7V NJM2370X47 4 7
2.6V NJM2370X26 2 6
(✱1) 5.0V NJM2370X05 0 5
2.7V NJM2370X27 2 7
6.0V NJM2370X06 0 6
2.8V NJM2370X28 2 8
(✱1) 8.0V NJM2370X08 0 8 (✱1)
2.9V NJM2370X29 2 9
(✱1) 9.0V NJM2370X09 0 9
3.0V NJM2370X03 0 3
10.0V NJM2370X10 1 0
3.1V NJM2370X31 3 1
12.0V NJM2370X12 1 2
3.2V NJM2370X32 3 2
(✱1) 13.0V NJM2370X13 1 3 (✱2)
3.3V NJM2370X33 3 3
15.0V NJM2370X15 1 5
3.5V NJM2370X35 3 5
(✱1):SOT-89(5pin) ONLY
(✱2):VSP8 ONLY
■ POWER DISSIPATION VS. AM BIENT TEMPERATURE
➀, ➁ Output voltage rank
(Please refer to output voltage
rank list)
➂ Plant code.(NJM2370 is ”A”)
➃ Last digit of the calendar year
➄, ➅ Lot Number
0
50
100
150
200
250
300
350
400
0255075100
A m bient Tem perature Ta(°C)
Power Dissipation PD(mW)
VSP8
SOT-89(5pin)
MEMO
[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.
