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PDF NJM2884 Data sheet ( Hoja de datos )
| Número de pieza | NJM2884 | |
| Descripción | LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJM2884/A
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
The NJM2884/A is a low dropout voltage regulator with
ON/OFF control.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
It delivers up to 5V/500mA output power with the maximum
input voltage of 10V.
The NJM2884/A is suitable for audio/video and PC related
applications.
The “U2” suffix product achieves high PD compared with “U1”
although the same package outline (SOT-89-5) .
PACKAGE OUTLINE
NJM2884U1/U2 NJM2884ADL3
NJM2884AKH1(2.0×2.0×0.397mm)
FEATURES
High Ripple Rejection 75dB typ. (f=1kHz, Vo=3V Version)
Low Output Noise Voltage Vno=45µVrms typ.
Output capacitor with 2.2µF ceramic capacitor (Vo≥2.7V)
Output Current
Io(max.)=500mA
High Precision Output Vo±1.0%
Low Dropout Voltage 0.18V typ. (Io=300mA)
ON/OFF Control Function
Internal Thermal Overload Protection
Internal Short Circuit Current Limit
Bipolar Technology
Package Outline
SOT-89-5(NJM2884U1/U2)/ TO-252-5(NJM2884ADL3)/ ESON6-H1(NJM2884AKH1)
PIN CONFIGURATION
5 2 4 1.CONTROL
2.GND
3.N.C.
4.VOUT
1 2 3 5.VIN
NJM2884U1/U2
3
1. CONTROL
2. VIN
3. GND
4. VOUT
5. N.C.
12 3 45
NJM2884ADL3
EQUIVALENT CIRCUIT
VIN
CONTROL
Bandgap
Reference
6 54
1 23
1 23
Exposed Pad
6 5 4 connected to GND
NJM2884AKH1
1. VOUT
2. NC
3. GND
4. CONTROL
5. NC
6. VIN
Thermal
Protection
VOUT
Ver.2012-07-12
GND
-1-
1 page  
NJM2884/A
POWER DISSIPATION vs. AMBIENT TEMPERATURE
2600
NJM2884U1/U2 Power Dissipation
(Topr=-40~+85°C,Tj=150°C)
2400
2200
U2 : on 4 layers board
2000
1800
1600
1400
1200
1000
U1 : on 4 layers board
800 U1/U2 : on 2 layers board
600
400
200
0
-50 -25 0 25 50
Temperature : Ta(°C)
75 100
3500
3000
2500
2000
1500
1000
500
0
-50
NJM2884ADL3 PowerDissipation
(Topr=-40~+85°C,Tj=150°C)
on 4 layers board
on 2 layers board
-25 0 25 50
Temperature : Ta(°C)
1500
NJM2884AKH1 Power Dissipation
(Topr=-40~+85°C,Tj=150°C)
1200
on 4 layers board with Exposed Pad
75
100
900
600 on 2 layers board with Exposed Pad
300
Ver.2012-07-12
0
-50 -25
0
25 50
Temperature : Ta(°C)
75 100
-5-
5 Page 
TYPICAL CHARACTERISTICS
NJM2884_3.0V
Equivalent Serise Resistance vs. Output Current
100
10
STABLE REGION
1
0.1
@:Ta=25oC
Co=2.2 µF(Ce ra mic)
VIN=4.0V
0.02
0.001
0.01
0.1
1
10
Output Current : Io(mA)
100
NJM2884_3.0V
Control Voltage vs. Temperature
2
@:VIN=4.0V
Io=30mA
Co=2.2µF(Ceramic)
1.5
1
0.5
0
-50
0 50 100
Temperature : Ta (oC)
150
NJM2884_3.0V
Output Peak Current vs. Temperature
1000
800
600
400
200
@:VIN=4.0V
Co =2.2 µF(Ceramic)
0
-50 0
50
Temperature : Ta (oC)
100
150
Ver.2012-07-12
NJM2884/A
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.05
0
-50
NJM2884_3.0V
Dropout Voltage vs. Temperature
@:Io =300mA
Co=2 .2 µF(Cera mic)
0 50 100
Temperature : Ta (oC)
150
NJM2884_3.0V
Output Voltage vs. Tem perature
3.1
3.05
3
2.95
2.9
-50
@:VIN=4.0V
Io=30mA
Co=2.2 µF
0 50 100
Temperature : Ta (oC)
150
300
250
200
150
100
50
0
-50
NJM2884_3.0V
Quiescent Current vs. Temperature
including Icont
@:VIN=4.0V
Output is open.
Co=2.2µF
0 50 100
Temperature : Ta (oC)
150
- 11 -
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet NJM2884.PDF ] | |
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