NJM2370
Ver.2004-08-30
-1-
LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL
GENERAL DESCRIPTION PACKAGE O UTLINE
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 an d ot hers.
FEATURES
Output Current (150mA min. (Vo-0.3V))
Low Dropout Vo ltage (0.1V typ. (Io=30mA))
External Capaciter for Noise Bypass
ON/OFF Control Function
Over Current Li mit
Thermal Shutdow n
Bipolar Technology
Package O ut line SOT-89(5pin), VSP8, TVSP-8
PIN CONFIGURATION
NJM2370U/U1 NJM2370R/RB1
EQUIVALENT CIRCUIT
V
OUT
GND
V
IN
Thermal
Protection
Bandgap
Reference N OISE
BYPASS
CONT
PIN FUNCTION
1.
CONTROL
2.
GND
3.
NOISE BYPASS
4.
V
OUT
5.
V
IN
PIN FUNCTION
1. CON TROL
2. GND
3. NC
4. NOI SE BYPASS
5. V
OUT
6. NC
7. NC
8. V
IN
NJM2370U/U1 NJM2370R NJM2370RB1
123
452
85
14
67
23
NJM2370
-2-
Ver.2004-08-30
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER SYMBOL RATINGS UNIT
Input Voltage V
IN
20 V
Control Vo ltage V
CONT
20(*1) V
SOT-89 350
Power Dissi pat ion P
D
VSP8,TVSP8 320 mW
Operating Temperat ure Range Topr −40 ∼ +85 °C
S torag e Temperature Range Tstg −40 ∼ +125 °C
(*1) When inp ut voltage is l ess t han + 20V, the absolut e max imum
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=30m A −3% − +3% V
Quiescent Current 1 I
Q
1 Io=0mA,expect I
CONT
− 180 − µA
Quiescent Current 2 I
Q
2 CONTROL−GND short − − 100 nA
Output Curre nt Io (Vo−0.3V) 150 180 − mA
V
IN
=(Vo+1V) ∼ (Vo+6V)
Vo=2V to 14V − − 0.12 %/V
Line Re gulation ∆Vo/∆V
IN
V
IN
=(Vo+1V) ∼ (Vo+5V)
Vo=15V − − 0.12 %/V
Load Regu latio n ∆Vo/∆Io Io=0 ∼ 60mA − − 0.03 %/mA
Dropout Voltage ∆V
I
-
O
Io=30mA − 0.1 0.3 V
Ripple Rej ecti on RR f=400Hz, ein=100 mVp- p
V
IN
=Vo+1.5V, Io=10 m A − 60 − dB
Av erage Temperature
Coefficient of Ou t put
Voltage
∆Vo/∆Ta Ta=−20 ∼ 75°C, Io=10mA
V
IN
=Vo+1.5V − 0. 2 − mV/°C
Output Noise Voltage V
NO
10Hz < f < 80kHz, Io=10mA, Vo=3V − 30 − µVrms
The abov e specificatio n is a common specif ication for all output voltag es.
Therefor e, it may be different from the individual specific ation for a spec if ic output voltage.
TEST CIRCUI T
ＮＪＭ2370
+
V
IN
V
IN
V
OUT
CONTROL NOISE
BYPASS
GND
+
0.1
µ
F
I
IN
I
CONT
V
CONT
Cp
10
µ
F
I
OUT
V
OUT
V
V
A
A
NJM2370
Ver.2004-08-30
-3-
TYPICAL APPLICATION
1 In Nonus e of ON/OFF Co nt rol
ＮＪＭ2370
+
V
IN
V
OUT
CONTROL NOISE
BYPASS
GND
+
0.1
µ
F
Cp=0.1µF
10
µ
F
V
OUT
V
IN
R
(0～300kΩ)
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 Volt age vs. Cont rol Vo ltage.
2 In Use of ON/OFF CONTROL
ＮＪＭ2370
+
V
IN
V
OUT
CONTROL NOISE
BYPASS
GND
+
0.1µF
Cp=0.1
µ
F
10µF
V
OUT
V
IN
R
When the control t er minal is “H”, it is ON.
When the control terminal is “L” or “open”, it is O FF.
✱Noise bypass Cap acitance 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
-4-
Ver.2004-08-30
PACKAGE M ARKING
0 5 A
7 0 1
5 4
3 2 1
a1
a2
a3
b1
b2
b3
1234
567
8
A
a3
0
a1
5
a2
7
b1
0
b2
1
b3
J R C
OUTPUT VOLTAGE RANK LIST
Marking Marking
Output
Voltage
Part Number
a1 a2
Output
Voltage Part Number
a1 a2
2.0V NJM2370X02 0 2 3.6V NJM2370X36 3 6
2.1V NJM2370X21 2 1
3.7V NJM2370X37 3 7
2.2V NJM2370X22 2 2
3.8V NJM2370X38 3 8
2.3V NJM2370X23 2 3
3.9V NJM2370X39 3 9
2.4V NJM2370X24 2 4
4.0V NJM2370X04 0 4
2.5V NJM2370X25 2 5
4.7V NJM2370X47 4 7
2.6V NJM2370X26 2 6
5.0V NJM2370X05 0 5
2.7V NJM2370X27 2 7
6.0V NJM2370X06 0 6
2.8V NJM2370X28 2 8
8.0V NJM2370X08 0 8
2.9V NJM2370X29 2 9
8.5V NJM2370X85 8 5
3.0V NJM2370X03 0 3
9.0V NJM2370X09 0 9
3.1V NJM2370X31 3 1
10.0V NJM2370X10 1 0
3.2V NJM2370X32 3 2
12.0V NJM2370X12 1 2
3.3V NJM2370X33 3 3
13.0V NJM2370X13 1 3
3.5V NJM2370X35 3 5
15.0V NJM2370X15 1 5
PO WER DISSI PATIO N VS. AMBI E NT TEM PE RATURE
a1,a2
Output voltage rank
(Please refer to output voltage
rank list)
a3
Plant code.(NJM2370 is ”A”)
b1
Last digit of the calendar year
b2,b3
Lot Number
0
50
100
150
200
250
300
350
400
0 25 50 75 100
Ambient Temperature T a(°C)
Power Dissipation P
D
(mW)
VSP8
SOT-89(5pin)
, TVSP8
NJM2370
-
5
-
Ver.2004-08-30
■ 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
-
6
-Ver.2004-08-30
■ 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
-
7
-
Ver.2004-08-30
■ 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
