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 I
O
=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.
■
PACKAGE OUTLINE
NJM2370U1
NJM2370R/RB1
■
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, VSP8, TVSP8
■
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.2008-01-11
-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)
(VSP8)
350
320
(T
a
=25°C)
UNIT
V
V
mW
°C
°C
-40 to +85
-40 to +125
(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.2008-01-11
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.2008-01-11
-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) : VSP8, TVSP8 ONLY
(*2) : SOT-89-5 (5pin) ONLY
■
POWER DISSIPATION VS. AMBIENT TEMPERATURE
NJM2370F3 Power Dissipation
(Topr=-40∼+85℃,Tj=125℃)
400
Power Dissipation P
D
(mW)
SOT-89-5
300
VSP8, TVSP8
200
100
0
0
25
50
Ambient Temperature
T (
℃
)
75
100
-4-
Ver.2008-01-11
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.2008-01-11
-5-
模拟与混合信号
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