NJM2370
LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL
■
GENERAL DESCRIPTION
The NJM2370 is a low dropout positive voltage regulator
with ON/OFF control. It has a low quiescent current, output
current of 150mA and low dropout voltage of 0.1V (at
IO=30mA). Further it can be added an external noise
bypass capacitor. It can be improve the characteristics of
output noise and ripple rejection by changing the
capacitance value.
The NJM2370 is available in a small 5-lead SOT-89
package and thin 8-lead MSOP (VSP) and MSOP (TVSP)
packages. These performances make it well-suited for
battery-powered portable devices such as a mobile phone,
PHS and movie camera.
■
PACKAGE OUTLINE
NJM2370U1
(SOT89-5)
NJM2370R
(MSOP8 (VSP8))
NJM2370RB1
(MSOP8 (TVSP8))
■
FEATURES
●
Output Current
(150mA min. (V
O
-0.3V))
●
Low Dropout Voltage
(0.1V typ.
(I
O
=30mA))
●
External Capacitor for Noise Bypass
●
ON / OFF Control Function
●
Over Current Limit
●
Thermal Shutdown
●
Bipolar Technology
●
Package Outline
SOT-89-5, MSOP8 (VSP8)*, MSOP8 (TVSP8)**
*MEET JEDEC MO-187-DA, **MEET JEDEC MO-187-DA / THIN TYPE
■
PIN CONFIGURATION
PIN FUNCTION
1. CONTROL
2. GND
3. NOISE BYPASS
4. V
OUT
5. V
IN
NJM2370U1
NJM2370R/RB1
PIN FUNCTION
1. CONTROL
2. GND
3. NC
4. NOISE BYPASS
5. V
OUT
6. NC
7. NC
8. V
IN
■
EQUIVALENT CIRCUIT
Ver.2012-07-18
-1-
NJM2370
■
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage
Control Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
IN
V
CONT
P
D
T
opr
T
stg
RATINGS
20
20 (note 1)
(SOT-89) 350
MSOP8 (VSP8), MSOP8(TVSP8) 320
-40 to +85
-40 to +125
(T
a
=25°C)
UNIT
V
V
mW
°C
°C
(note 1) When input voltage is less than +20V, the absolute maximum control voltage is equal to the input voltage.
■
ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage
Quiescent Current 1
Quiescent Current 2
Output Current
Line Regulation
SYMBOL
V
O
I
Q
1
I
Q
2
I
O
∆V
O
/
∆V
IN
CONDITIONS
V
IN
=V
O
+1V, I
O
=30mA
I
O
=0mA, expect I
CONT
CONTROL-GND short
(V
O
-0.3V)
V
IN
=(V
O
+1V) to (V
O
+6V)
V
O
=2V to 14V
V
IN
=(V
O
+1V) to (V
O
+5V)
V
O
=15V
Load Regulation
Dropout Voltage
Ripple Rejection
Average Temperature
Coefficient of Output Voltage
Output Noise Voltage
∆V
O
/
∆I
O
∆V
I-O
R·R
∆V
O
/
∆T
a
V
NO
I
O
=0 to 60mA
I
O
=30mA
f=400Hz, e
in
=100mV
P-P
V
IN
= V
O
+1.5V, I
O
=10mA
Ta=-20 to 75°C, I
O
=10mA
V
IN
=V
O
+1.5V
10Hz < f < 80kHz, I
O
=10mA, V
O
=3V
MIN.
-3%
-
-
150
-
-
-
-
-
-
-
TYP.
-
180
-
180
-
-
-
0.1
60
0.2
30
MAX.
+3%
-
100
-
0.12
0.12
0.03
0.3
-
-
-
(T
a
=25°C)
UNIT
V
µA
nA
mA
%/V
%/V
% / mA
V
dB
mV / °C
µVrms
(note 2) Please confirm the specification separately because some parameters depend on output voltage.
■
TEST CIRCUIT
-2-
Ver.2012-07-18
NJM2370
■
TYPICAL APPLICATION
(1) In Nonuse of ON / OFF Control
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
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.2012-07-18
-3-
NJM2370
■
OUTPUT VOLTAGE RANK LIST
Past Number
NJM2370U1/R/RB1-02
NJM2370U1/R/RB1-21
NJM2370U1/R/RB1-22
NJM2370U1/R/RB1-23
NJM2370U1/R/RB1-24
NJM2370U1/R/RB1-25
NJM2370U1/R/RB1-26
NJM2370U1/R/RB1-27
NJM2370U1/R/RB1-28
NJM2370U1/R/RB1-29
NJM2370U1/R/RB1-03
Output
Voltage
2.0V
2.1V
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
2.8V
2.9V
3.0V
Past Number
(*1)
(*1)
(*1)
(*1)
(*1)
(*1)
(*1)
NJM2370U1/R/RB1-31
NJM2370U1/R/RB1-32
NJM2370U1/R/RB1-33
NJM2370U1/R/RB1-35
NJM2370U1/R/RB1-36
NJM2370U1/R/RB1-37
NJM2370U1/R/RB1-38
NJM2370U1/R/RB1-39
NJM2370U1/R/RB1-04
NJM2370U1/R/RB1-05
NJM2370U1/R/RB1-06
Output
Voltage
3.1V
3.2V
3.3V
3.5V
3.6V
3.7V
3.8V
3.9V
4.0V
5.0V
6.0V
Output
Voltage
NJM2370U1/R/RB1-08
8.0V (*1)
(*1) NJM2370U1/R/RB1-85
8.5V
NJM2370U1/R/RB1-09
9.0V
NJM2370U1/R/RB1-10 10.0V
(*1) NJM2370U1/R/RB1-12 12.0V
(*1) NJM2370U1/R/RB1-13 13.0V (*2)
(*1) NJM2370U1/R/RB1-D3 13.5V
(*1) NJM2370U1/R/RB1-15 15.0V
NJM2370U1/R/RB1-F5 15.5V
Past Number
(*1) : MSOP8(VSP8), MSOP8(TVSP8) ONLY
(*2) : SOT-89-5 (5pin) ONLY
■
POWER DISSIPATION VS. AMBIENT TEMPERATURE
NJM2370 Power Dissipation
(Topr=-40∼+85℃,Tj=125℃)
400
SOT-89-5
Power Dissipation P
D
(mW)
300
MSOP8(VSP8)
MSOP8(TVSP8)
200
100
0
0
25
50
Ambient Temperature Ta(℃)
75
100
-4-
Ver.2012-07-18
NJM2370
■
TYPICAL CHARACTERISTICS
NJM2370 3V Version Dropout Voltage
NJM2370 3V Version Load Regulation
NJM2370 3V Version GND Current
vs. Output Current
NJM2370 3V Version Dropout
Voltage
Ver.2012-07-18
-5-
嵌入式系统
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