NJRC NJM2862F285 Low dropout voltage regulator Datasheet

NJM2861/62
Preliminary
LOW DROPOUT VOLTAGE REGULATOR
■ GENERAL DESCRIPTION
The NJM2861/62 are low dropout voltage regulators.
Advanced Bipolar technology achieves low noise, high
ripple rejection and low quiescent current.
■ FEATURES
●High Ripple Rejection
70dB typ. (f=1kHz)
●Output Noise Voltage
Vno=30µVrms (Cp=0.01µF)
●Output capacitor with 1.0uF ceramic capacitor (Vo≥2.7V)
●Output Current
Io(max.)=100mA
●High Precision Output
Vo±1%
●Low Dropout Voltage
0.10V typ. (Io=60mA)
●ON/OFF Control
(Active High)
●Internal Short Circuit Current Limit
●Internal Thermal Overload Protection
●Bipolar Technology
●Package Outline
MTP5 (MTP5:2.8×2.9×1.1mm)
■ PACKAGE OUTLINE
NJM2861F
NJM2862F
■ PIN CONFIGURATION
1
5
2
3
NJM2861F
4
PIN FUNCTION
5
1. CONTROL (Active High) 1
2
2. GND
3. NOISE BYPASS
3
4
4. VOUT
5. VIN
NJM2862F
PIN FUNCTION
1.VIN
2.GND
3.CONTROL (Active High)
4.NOISE BYPASS
5.VOUT
■ EQUIVALENT CIRCUIT
VOUT
VIN
Cont
Thermal
Protection
Noise
Bypass
Bandgap
Reference
GND
■ OUTPUT VOLTAGE RANK LIST
Device Name
VOUT
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
VOUT
3.3V
3.8V
5.0V
NJM2861/62
Preliminary
■ ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
VIN
Control Voltage
VCONT
Power Dissipation
PD
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.
■ ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=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
IQ
µA
−
Quiescent Current
VCONT=0V
100
nA
IQ(OFF)
−
−
at Control OFF
Output Current
Io
100
130
mA
Vo−0.3V
Line Regulation
0.10
%/V
VIN=Vo+1V ∼ Vo+6V, Io=30mA
∆Vo/∆VIN
−
−
Load Regulation
0.03 %/mA
∆Vo/∆Io
Io=0 ∼ 60mA
−
−
Dropout Voltage
Io=60mA
0.10
0.18
V
∆VI−O
−
ein=200mVrms,f=1kHz, Io=10mA
Ripple Rejection
RR
70
dB
−
−
VIN=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
VNO
30
µVrms
−
−
Vo=3V Version
Control Voltage for
1.6
V
VCONT(ON)
−
−
ON-state
Control Voltage for
VCONT(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.
■ TEST CIRCUIT
A
IIN
VIN
VOUT
IOUT
VIN
0.1uF
A
ICONT
CONTROL
NOISE
BYPASS
1.0uF
OR
2.2uF(Vo≤2.6V)
(ceramic)
Cp=0.01uF
V
VCONT
GND
V
VOUT
NJM2861/62
Preliminary
■ TYPICAL APPLICATION
① In case that ON/OFF Control is not required:
VIN
VIN
VOUT
VOUT
1.0uF
OR
2.2uF(Vo≤2.6V)
(ceramic)
0.1uF
R
(0∼300kΩ)
NOISE
BYPASS
CONTROL
Cp=0.01uF
GND
Connect control terminal to VIN 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”.
② In use of ON/OFF CONTROL:
VIN
VIN
VOUT
VOUT
1.0uF
OR
2.2uF(Vo≤2.6V)
(ceramic)
0.1uF
R
CONTROL
NOISE
BYPASS
GND
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
Preliminary
[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.
Similar pages