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PDF NJM2831 Data sheet ( Hoja de datos )
| Número de pieza | NJM2831 | |
| Descripción | LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJM2831
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2831 is a 100mA output low dropout voltage regulator
with ON/OFF control.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
2.0V to 15.5V output voltage range, 1µF small decoupling
capacitor, built-in noise bypass capacitor make the NJM2831
suitable for various applications.
PACKAGE OUTLINE
NJM2831F
FEATURES
Output voltage options available 2.1 ∼ 15.5V (0.1V step)
High Ripple Rejection
75dB typ. (f=1kHz Vo=3V Version)
Output Noise Voltage
Vno=45µVrms typ.
Output capacitor with 1.0µF ceramic capacitor (Vo≥5.1V)
Output Current
Io(max.)=100mA
High Precision Output
Low Dropout Voltage
Vo±1.0%
0.10V typ. (Io=60mA)
ON/OFF Control
(Active High)
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
SOT-23-5
PIN CONFIGURATION
54
12 3
1. CONTROL
2. GND
3. NC
4. VOUT
5. VIN
NJM2831
EQUIVALENT CIRCUIT
VIN
Control
Bandgap
Reference
Thermal
Protection
VOUT
GND
Ver.2007-02-23
-1-
1 page  
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POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2831F Power Dissipation
(Topr=-40～+85℃,Tj=125℃,PD=200mW(Ta≦25℃))
500
400 On Board(114.3×76.2×1.6mm, FR-4)
300
Device itself
200
100
0
-50
-25
0 25 50
Ambient Temperature Ta(℃)
75
NJM2831
100
Ver.2007-02-23
-5-
5 Page 
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●TRANSIENT RESPONSE (3V Version)
NJM2831_3.0V
ON/OFF Transient Response without Load
7
10
6
Control Voltage
5
5
0
4
Output Voltage
3
-5
-10
2
1
@:Ta=25oC
VDD=4.0V
Co =1.0µF(Ceramic)
0 Io=0mA
-15
-20
-25
-1 -30
012345
Time : t [S]
NJM2831_3.0V
Load Transient Response
3.08
3.06
3.04
Output Current
3.02
3 Output Voltage
2.98
2.96
2.94
@:Ta=25oC
VD D=4 .0V
Co=1.0µF(Ceramic)
2.92
0
40 80 120
Time : t [µS]
160
150
100
50
0
-50
-100
-150
-200
-250
200
NJM2831
NJM2831_3.0V
ON/OFF Transient Response
7
6
Control Voltage
5
4
Output Voltage
3
2
1
0
-1
0
@:Ta=25oC
VDD=4.0V
Co =1.0 µF(Ceramic )
Io=30mA
4 8 12
Time : t [mS]
16
10
5
0
-5
-10
-15
-20
-25
-30
20
NJM2831_3.0V
Line Transient Response
3.1
3.08
3.06
3.04
Input Voltage
3.02
3
2.98
2.96
2.94
0
Output Voltage
@:Ta=25oC
VDD=4.0V
Co =1 .0 µF(Cer amic )
Io=30mA
40 80 120
Time : t [µS]
160
6
5
4
3
2
1
0
-1
-2
200
Ver.2007-02-23
- 11 -
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet NJM2831.PDF ] | |
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