NJM2391 [NJRC]
LOW DROPOUT VOLTAGE REGULATOR; 低压差稳压器
| 型号： | NJM2391 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | LOW DROPOUT VOLTAGE REGULATOR |
| 文件： | 总7页 (文件大小：104K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJM2391
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
PACKAGE OUTLINE
The NJM2391 is low dropout voltage regulators
featuring high precision voltage.
It is suitable for Notebook PCs, PC cards and hard
disks where 3.3V need to be generated from 5V supply.
A small TO-252 package is adopted for the space
saving.
NJM2391DL1
FEATURES
zOutput Current
Io(max.)=1A
zHigh Precision Output Voltage
zLow Dropout Voltage
Vo±1%
∆ VI-O =1.1V typ. At Io=1A
zInternal Excessive Voltage Protection Circuit
zInternal Short Circuit Current Limit
zInternal Thermal Overload Protection
zBipolar Technology
zPackage Outline
TO-252
PIN CONFIGURATION
2
PIN FUNCTION
1.VIN
2.GND
3.VOUT
1
3
NJM2391DL1
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
UNIT
V
PARAMETER
Input Voltage
SYMBOL
RATINGS
+10
V+
8 (Tc=25°C)
Power Dissipation
PD
TO-252
W
0.8(Ta≤25°C)
Operating Temperature
Storage Temperature
Topr
Tstg
−40 ~ +85
°C
°C
−50 ~ +125
OUTPUT VOLTAGE RANK LIST
Device Name VOUT
NJM2391DL1-25 2.5V
NJM2391DL1-26 2.6V
NJM2391DL1-28 2.85V
NJM2391DL1-03 3.0V
NJM2391DL1-33 3.3V
NJM2391DL1-35 3.5V
NJM2391DL1-05 5.0V
NJM2391
ELECTRICAL CHARACTERISTICS (CIN=0.1µF, Co=10µF, Tj=25°C)
Measurement is to be conducted is pulse testing
PARAMETER
Vo=2.5V Version
Output Voltage
SYMBOL
TEST CONDITION
MIN.
TYP.
2.5
MAX.
2.525
UNIT
V
VO
VIN=5.5V, Io=0.01A
2.475
VIN=4V~9V, Io=1A
VIN=5. 5V, Io=0~1A
VIN=5.5V, Io=0A
VIN=5.5V, ein=2VP-P
f=120Hz, Io=0.5A
Io=1A
50
50
4.0
mV
mV
mA
Line Regulation
Load Regulation
Quiescent Current
∆Vo/∆VIN
∆Vo/∆Io
IQ
−
−
−
−
−
2.3
RR
∆VI-O
VNO
53
−
63
1.1
85
dB
V
Ripple Rejection
Dropout Voltage
−
1.2
185
VIN=5.5V, Io=0.5A
BW=10Hz~100kHz
µV
Output Noise Voltage
−
Vo=2.6V Version
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
VO
VIN=5.6V, Io=0.01A
2.574
2.60
2.626
V
VIN=4.1V~9.1V, Io=1A
VIN=5.6V, Io=0~1A
VIN=5.6V, Io=0A
VIN=5.6V, ein=2VP-P
f=120Hz, Io=0.5A
Io=1A
52
52
4.0
mV
mV
mA
∆Vo/∆VIN
∆Vo/∆Io
IQ
−
−
−
−
−
2.3
RR
∆VI-O
VNO
53
−
63
1.1
87
dB
V
Ripple Rejection
Dropout Voltage
−
1.2
187
VIN=5.6V, Io=0.5A
BW=10Hz~100kHz
µV
Output Noise Voltage
−
Vo=2.85V Version
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
VO
VIN=5.85V, Io=0.01A
2.82
2.85
2.88
V
VIN=4.35V~9.35V, Io=1A
VIN=5.85V, Io=0~1A
VIN=5.85V, Io=0A
VIN=5.85V, ein=2VP-P
f=120Hz, Io=0.5A
Io=1A
57
57
4.0
mV
mV
mA
∆Vo/∆VIN
∆Vo/∆Io
IQ
−
−
−
−
−
2.3
RR
∆VI-O
VNO
53
−
63
1.1
90
dB
V
Ripple Rejection
Dropout Voltage
−
1.2
190
VIN=5.85V, Io=0.5A
BW=10Hz~100kHz
µV
Output Noise Voltage
−
Vo=3V Version
VO
VIN=6V, Io=0.01A
2.97
3.00
3.03
V
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
VIN=4.5V~9.5V, Io=1A
VIN=6V, Io=0~1A
VIN=6V, Io=0A
VIN=6V, ein=2VP-P
f=120Hz, Io=0.5A
Io=1A
VIN=6V, Io=0.5A
BW=10Hz~100kHz
60
60
4.0
mV
mV
mA
∆Vo/∆VIN
∆Vo/∆Io
IQ
−
−
−
−
−
2.3
RR
∆VI-O
VNO
52
−
62
1.1
95
dB
V
Ripple Rejection
Dropout Voltage
−
1.2
195
µV
Output Noise Voltage
−
NJM2391
ELECTRICAL CHARACTERISTICS (CIN=0.1µF, Co=10µF, Tj=25°C)
Measurement is to be conducted is pulse testing
PARAMETER
Vo=3.3V Version
Output Voltage
SYMBOL
TEST CONDITION
MIN.
TYP.
3.30
MAX.
3.333
UNIT
V
VO
VIN=6.3V, Io=0.01A
3.267
VIN=4.8V~9.8V, Io=1A
VIN=6.3V, Io=0~1A
VIN=6.3V, Io=0A
VIN=6.3V, ein=2VP-P
f=120Hz, Io=0.5A
Io=1A
66
66
4.0
mV
mV
mA
Line Regulation
Load Regulation
Quiescent Current
∆Vo/∆VIN
∆Vo/∆Io
IQ
−
−
−
−
−
2.3
RR
∆VI-O
VNO
52
−
62
1.1
100
dB
V
Ripple Rejection
Dropout Voltage
−
1.2
200
VIN=6.3V, Io=0.5A
BW=10Hz~100kHz
µV
Output Noise Voltage
−
Vo=3.5V Version
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
VO
VIN=6.5V, Io=0.01A
3.465
3.50
3.535
V
VIN=5V~10V, Io=1A
VIN=6.5V, Io=0~1A
VIN=6.5V, Io=0A
VIN=6.5V, ein=2VP-P
f=120Hz, Io=0.5A
Io=1A
70
70
4.0
mV
mV
mA
∆Vo/∆VIN
∆Vo/∆Io
IQ
−
−
−
−
−
2.3
RR
∆VI-O
VNO
52
−
62
1.1
105
dB
V
Ripple Rejection
Dropout Voltage
−
1.2
205
VIN=6.5V, Io=0.5A
BW=10Hz~100kHz
µV
Output Noise Voltage
−
Vo=5V Version
VO
VIN=8V, Io=0.01A
4.95
5.00
5.05
V
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
VIN=6.5V~9.5V, Io=1A
VIN=8V, Io=0~1A
VIN=8V, Io=0A
VIN=8V, ein=2VP-P
f=120Hz, Io=0.5A
Io=1A
VIN=8V, Io=0.5A
BW=10Hz~100kHz
60
100
4.0
mV
mV
mA
∆Vo/∆VIN
∆Vo/∆Io
IQ
−
−
−
−
−
2.3
RR
∆VI-O
VNO
50
−
60
1.1
150
dB
V
Ripple Rejection
Dropout Voltage
−
1.2
260
µV
Output Noise Voltage
−
NJM2391
TEST CIRCUIT
1.Output Voltage / Line Regulation / Load Regulation
Quiescent Current / Dropout Voltage / Output Noise Voltage
V
VOUT
BPF
IN
NJM2391
A
I
IN
A
IOUT
RL
+
+
VOUT
V.V VNO
GND
V
0.1µF
10µF
V
IN
2.Ripple Rejection
V
VOUT
IN
ein=2Vp- p
NJM2391
A
f=120Hz
IOUT
RL
+
+
eo
GND
V.V
0.1µF
10µF
V
IN
RR=20log10[ein/eo] (dB)
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2391DL1
(Topr=-40~+85°C,Tj=125°C,PD=8W(TC=25°C),PD=0.8W(Ta=25°C))
10
8
Heat Sink
∞
θHS=5°C/W
θHS=10°C/W
θHS=20°C/W
6
4
2
Without Heat Sink
0
- 50
- 25
0
25
50
75
100
Ambient Temperature Ta(°C)
NJM2391
ELECTRICAL CHARACTERISTICS
NJM2391
ELECTRICAL CHARACTERISTICS
NJM2391
[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.
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