NJM2370
LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL
GENERAL DESCRIPTION
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, TVSP-8
PIN CONFIGURATION
5
2
4
PACKAGE OUTLINE
NJM2370U/U1 NJM2370R NJM2370RB1
1
2
3
PIN FUNCTION
1.
CONTROL
2.
GND
3.
NOISE BYPASS
4.
V
OUT
5.
V
IN
8 7 6 5
1 2 3 4
NJM2370U/U1
EQUIVALENT CIRCUIT
NJM2370R/RB1
PIN FUNCTION
1. CONTROL
2. GND
3. NC
4. NOISE BYPASS
5. V
OUT
6. NC
7. NC
8. V
IN
V
IN
CONT
Bandgap
Reference
Thermal
Protection
V
OUT
NOISE
BYPASS
GND
Ver.2004-08-30
-1-
NJM2370
(Ta=25°C)
RATINGS
UNIT
20
V
20(*1)
V
SOT-89
350
Power Dissipation
P
D
mW
VSP8,TVSP8 320
Operating Temperature Range
Topr
−40 ∼
+85
°C
Storage Temperature Range
Tstg
−40 ∼
+125
°C
(*1)When input voltage is less than +20V, the absolute maximum
control voltage is equal to the input voltage.
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Output Voltage
Vo
Quiescent Current 1
I
Q
1
Quiescent Current 2
I
Q
2
Output Current
Io
Line Regulation
∆Vo/∆V
IN
(Ta=25°C)
MAX. UNIT
+3%
V
µA
−
100
nA
mA
−
0.12
%/V
0.12
0.03
0.3
−
−
−
%/V
%/mA
V
dB
mV/°C
µVrms
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Load Regulation
Dropout Voltage
Ripple Rejection
Average Temperature
Coefficient of Output
Voltage
Output Noise Voltage
∆Vo/∆Io
∆V
I
-
O
RR
∆Vo/∆Ta
V
NO
CONDITIONS
V
IN
=Vo+1V, Io=30mA
Io=0mA,expect I
CONT
CONTROL−GND short
(Vo−0.3V)
V
IN
=(Vo+1V)
∼
(Vo+6V)
Vo=2V to 14V
V
IN
=(Vo+1V)
∼
(Vo+5V)
Vo=15V
Io=0
∼
60mA
Io=30mA
f=400Hz, ein=100mVp-p
V
IN
=Vo+1.5V, Io=10mA
Ta=−20
∼
75°C, Io=10mA
V
IN
=Vo+1.5V
10Hz< f < 80kHz, Io=10mA, Vo=3V
MIN.
−3%
−
−
150
−
−
−
−
−
−
−
TYP.
−
180
−
180
−
−
−
0.1
60
0. 2
30
The above specification is a common specification for all output voltages.
Therefore, it may be different from the individual specification for a specific output voltage.
TEST CIRCUIT
A
V
IN
I
IN
+
0.1
µ
F
V
IN
V
OUT
+
ＮＪＭ2370
I
OUT
V
V
OUT
10
µ
F
A
V
V
CONT
I
CONT
CONTROL
NOISE
BYPASS
GND
Cp
-2-
Ver.2004-08-30
NJM2370
TYPICAL APPLICATION
1
In Nonuse of ON/OFF Control
V
IN
+
0.1
µ
F
V
IN
V
OUT
+
V
OUT
ＮＪＭ2370
10
µ
F
R
(0½300kΩ)
CONTROL
NOISE
BYPASS
GND
Cp=0.1µF
Connect control terminal(1Pin) to V
IN
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
V
IN
+
0.1µF
R
V
IN
V
OUT
+
V
OUT
ＮＪＭ2370
10µF
CONTROL
NOISE
BYPASS
GND
Cp=0.1
µ
F
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.
Ver.2004-08-30
-3-
NJM2370
PACKAGE MARKING
5
4
a1,a2
Output voltage rank
8
7
0
7
J
1
2
6
5
0
R
3
1
C
4
5
a3
05A
b3
701
(Please refer to output voltage
rank list)
A
a3 a1 a2
a2
a1
b2
b1
a3
Plant code.(NJM2370 is ”A”)
b1
Last digit of the calendar year
b2,b3
Lot Number
b1 b2 b3
1
2
3
OUTPUT VOLTAGE RANK LIST
Output
Voltage
2.0V
2.1V
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
2.8V
2.9V
3.0V
3.1V
3.2V
3.3V
3.5V
Part Number
NJM2370X02
NJM2370X21
NJM2370X22
NJM2370X23
NJM2370X24
NJM2370X25
NJM2370X26
NJM2370X27
NJM2370X28
NJM2370X29
NJM2370X03
NJM2370X31
NJM2370X32
NJM2370X33
NJM2370X35
Marking
Output
Voltage
3.6V
3.7V
3.8V
3.9V
4.0V
4.7V
5.0V
6.0V
8.0V
8.5V
9.0V
10.0V
12.0V
13.0V
15.0V
Part Number
NJM2370X36
NJM2370X37
NJM2370X38
NJM2370X39
NJM2370X04
NJM2370X47
NJM2370X05
NJM2370X06
NJM2370X08
NJM2370X85
NJM2370X09
NJM2370X10
NJM2370X12
NJM2370X13
NJM2370X15
Marking
a1
0
2
2
2
2
2
2
2
2
2
0
3
3
3
3
a2
2
1
2
3
4
5
6
7
8
9
3
1
2
3
5
a1
3
3
3
3
0
4
0
0
0
8
0
1
1
1
1
a2
6
7
8
9
4
7
5
6
8
5
9
0
2
3
5
POWER DISSIPATION VS. AMBIENT TEMPERATURE
400
SO T-89(5pin)
350
Power Dissipation P
D
(mW)
300
VSP8
250
200
150
100
50
0
0
, TVSP8
25
50
75
100
Am bient Tem perature Ta(°C)
-4-
Ver.2004-08-30
NJM2370
■
TYPICAL CHARACTERISTICS
NJM2370U03 / R03 Dropout Voltage
NJM2370U03 / R03 Load Regulation
NJM2370U03/R03 GND Current
vs. Output Current
NJM2370U03/R03 Dropout Voltage
vs. Output Current
Ver.2004-08-30
-5-
京公网安备 11010802033920号
EEWORLD
