NJM2861/62
LOW DROPOUT VOLTAGE REGULATOR
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GENERAL DESCRIPTION
The NJM2861/62 are low dropout voltage regulators.
Advanced Bipolar technology achieves low noise, high
ripple rejection and low quiescent current.
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FEATURES
qHigh
Ripple Rejection
70dB typ. (f=1kHz)
qOutput
Noise Voltage
Vno=30µVrms (Cp=0.01µF)
qOutput
capacitor with 1.0uF ceramic capacitor (Vo≥2.7V)
qOutput
Current
Io(max.)=100mA
qHigh
Precision Output
Vo±1%
qLow
Dropout Voltage
0.10V typ. (Io=60mA)
qON/OFF
Control
(Active High)
qInternal
Short Circuit Current Limit
qInternal
Thermal Overload Protection
qBipolar
Technology
qPackage
Outline
MTP5 (MTP5:2.8×2.9×1.1mm)
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PIN CONFIGURATION
1
2
3
4
5
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PACKAGE OUTLINE
NJM2861F
NJM2862F
NJM2861F
PIN FUNCTION
5
1. CONTROL (Active High)
1
2
2. GND
3. NOISE BYPASS
3
4
4. V
OUT
5. V
IN
NJM2862F
PIN FUNCTION
1.V
IN
2.GND
3.CONTROL (Active High)
4.NOISE BYPASS
5.V
OUT
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EQUIVALENT CIRCUIT
V
IN
Cont
Thermal
Protection
Noise
Bypass
V
OUT
Bandgap
Reference
GND
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OUTPUT VOLTAGE RANK LIST
Device Name
V
OUT
Device Name
2.1V
NJM286×F21
NJM286×F33
2.5V
NJM286×F25
NJM286×F38
2.6V
NJM286×F26
NJM286×F05
2.7V
NJM286×F27
2.8V
NJM286×F28
2.85V
NJM286×F285
3.0V
NJM286×F03
V
OUT
3.3V
3.8V
5.0V
NJM2861/62
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ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
IN
Control Voltage
V
CONT
Power Dissipation
P
D
Operating Temperature
Topr
Storage Temperature
Tstg
(Ta=25°C)
RATINGS
UNIT
+14
V
+14(note 1)
V
200
mW
−40 ∼
+85
°C
−40 ∼
+125
°C
(note 1) When input voltage is less than +14V, the absolute maximum
control voltage is equal to the input voltage.
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ELECTRICAL CHARACTERISTICS
(V
IN
=Vo+1V, C
IN
=0.1µF, Co=1.0uF: Vo≥2.7V (Co=2.2uF: Vo≤2.6V), Cp=0.01µF, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Io=30mA
Output Voltage
Vo
-1%
+1%
V
−
Io=0mA, expect Icont
Quiescent Current
120
180
I
Q
µA
−
Quiescent Current
V
CONT
=0V
100
nA
I
Q(OFF)
−
−
at Control OFF
Output Current
Io
100
130
-
mA
Vo−0.3V
Line Regulation
0.10
%/V
V
IN
=Vo+1V
∼
Vo+6V, Io=30mA
∆Vo/∆V
IN
−
−
Load Regulation
0.03 %/mA
∆Vo/∆Io
Io=0
∼
60mA
−
−
Dropout Voltage
Io=60mA
0.10
0.18
V
∆V
I−O
−
ein=200mVrms,f=1kHz, Io=10mA
Ripple Rejection
RR
70
dB
−
−
V
IN
=Vo+1V, Vo=3V Version
Average Temperature
Coefficient of Output
∆Vo/∆Ta
Ta=0∼85°C, Io=10mA
±50
ppm/°C
−
−
Voltage
f=10Hz∼80kHz, Io=10mA,
Output Noise Voltage
V
NO
30
µVrms
−
−
Vo=3V Version
Control Voltage for
1.6
V
V
CONT(ON)
−
−
ON-state
Control Voltage for
V
CONT(OFF)
0.6
V
−
−
OFF-state
(note 2) 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.
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TEST CIRCUIT
A
V
IN
I
IN
V
IN
V
OUT
I
OUT
0.1uF
1.0uF
OR
2.2uF(Vo≤2.6V)
(ceramic)
Cp=0.01uF
V
V
OUT
A
V
V
CONT
I
CONT
CONTROL
GND
NOISE
BYPASS
NJM2861/62
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TYPICAL APPLICATION
x
In case that ON/OFF Control is not required:
V
IN
V
IN
0.1uF
V
OUT
V
OUT
1.0uF
OR
2.2uF(Vo≤2.6V)
(ceramic)
R
(0
∼
300kΩ)
CONTROL
GND
NOISE
BYPASS
Cp=0.01uF
Connect control terminal to V
IN
terminal
The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum
operating voltage. For further information, please refer to Figure “Output Voltage vs. Control Voltage”.
y
In use of ON/OFF CONTROL:
V
IN
V
IN
V
OUT
V
OUT
1.0uF
OR
2.2uF(Vo
≤
2.6V)
(ceramic)
0.1uF
R
CONTROL
GND
NOISE
BYPASS
Cp=0.01uF
State of control terminal:
•“H”→
output is enabled.
•
“L” or “open”
→
output is disabled.
✱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.
Use of smaller Cp value may cause oscillation.
Use the Cp value of 0.01uF greater to avoid the problem.
NJM2861/62
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ELECTRICAL CHARACTERISTICS
NJM2861/62
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ELECTRICAL CHARACTERISTICS
