NJM2857DL3 查看數據表（PDF） - Japan Radio Corporation
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NJM2857DL3 Datasheet PDF : 11 Pages
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NJM2857 www.DataSheet4U.com
ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V(Vo<1.6V: VIN=2.6V), CIN=1.0µF, Co=4.7µF(1.7V<Vo≤2.4V: Co=10µF, Vo≤1.7V: Co=22uF), Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Output Voltage
Vo
Io=30mA
-1.0% - +1.0% V
Input Voltage
Quiescent Current
Quiescent Current
at Control OFF
VIN
IQ
IQ (OFF)
Io=0mA
VCONT=0V
-
-
8
V
- 500 750 µA
-
-
100 nA
Output Current
Io
Vo×0.9V
1500 2000 -
mA
Line Regulation
∆Vo/∆VIN
VIN=Vo+1V ∼ Vo+6V (Vo≤2V),
VIN=Vo+1V ∼ +8V(Vo>2V),
Io=30mA
-
-
0.10 %/V
Load Regulation
∆Vo/∆Io Io=0 ∼ 1500mA
-
- 0.003 %/mA
Dropout Voltage(*1)
∆VI -O Io=1000mA
Vo=1.5V
-
0.20 0.30
V
-
86
-
Ripple Rejection(*2)
ein=200mVrms, Vo=2.5V
RR
f=1kHz,
Vo=3.0V
Io=10mA
Vo=3.3V
-
82
-
-
80
-
dB
-
79
-
Vo=5.0V
-
78
-
Average Temperature
Coefficient of Output
Voltage
∆Vo/∆Ta Ta=0 ∼ 85°C, Io=10mA
-
± 50
- ppm/°C
Vo=1.5V
-
26
-
Output Noise Voltage
Vo=2.5V
VNO
f=10Hz ∼ 80kHz,
Io=10mA,
Vo=3.0V
Vo=3.3V
-
41
-
47
-
51
-
- µVrms
-
Vo=5.0V
-
69
-
Control Current
Control Voltage for ON-state
Control Voltage for OFF-state
ICONT
VCONT(ON)
VCONT(OFF)
VCONT=1.6V
-
3
12
µA
1.6
-
-
V
-
-
0.6
V
(*1): The output voltage excludes under 2.4V
(*2): Vo>2.0V:VIN=Vo+1V, Vo≤2.0V:VIN=3.0V
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.
POWER DISSIPATION vs. AMBIENT TEMPERATURE
3500
3000
2500
2000
1500
1000
500
0
-50
NJM2857DL3 PowerDissipation
(Topr=-40~+85°C,Tj=150°C)
on 4 layers board
on 2 layers board
-25
0
25
50
Temperature : Ta(°C)
Ver.2010-02-08
75
100
-3-
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