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PDF NJM2890 Data sheet ( Hoja de datos )
| Número de pieza | NJM2890 | |
| Descripción | 2ch LOW DROPOUT VOLTAGE REGULATOR | |
| Fabricantes | JRC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJM2890 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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NJM2890
2ch LOW DROPOUT VOLTAGE REGULATOR
! GENERAL DESCRIPTION
The NJM2890 is a dual low dropout voltage regulator.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
! PACKAGE OUTLINE
NJM2890R
! FEATURES
" High Ripple Rejection 70dB typ. (f=1kHz,Vo=3V Version)
" Output Noise Voltage Vno=30µVrms typ.(Cp=0.01µF)
" Output capacitor with 1.0uF ceramic capacitor (Vo≥2.7V)
" Output Current
Io(max.)=150mA × 2ch
" High Precision Output Vo±1.0%
" Low Dropout Voltage 0.10V typ. (Io=60mA)
" Operating Voltage Range +2.5V∼+14V (Vo≤2.0V version)
" ON/OFF Control
(Active High)
" Internal Short Circuit Current Limit
" Internal Thermal Overload Protection
" Bipolar Technology
" Package Outline
VSP10
! PIN CONFIGURATION
10 9 8 7 6
PIN FUNCTION
1. CONTROL1
2. VIN1
3. GND
4. VIN2
5. CONTROL2
6. NOISE BYPASS2
7. VOUT2
8. GND
9. VOUT1
10. NOISE BYPASS1
! EQUIVALENT CIRCUIT
12345
NJM2890R
VIN1/ VIN2
Cont1/Cont2
Bandgap
Reference
Thermal
Protection
VOUT1/ VOUT2
Noise Bypass1 /
Noise Bypass2
GND
1 page  
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! TYPICAL APPLICATION
1 In the case where ON/OFF Control is not required:
R
(0∼300kΩ)
CONTROL
NOISE
BYPASS1
Cp=0.01µF
VIN1
VIN1
VOUT1
0.1µF
NJM2890
GND
GND
1.0µF*3
NJM2890
VOUT1
VIN2
VIN2
VOUT2
0.1µF
R
NOISE
CONTROL BYPASS2
(0∼300kΩ)
1.0µF*3
Cp=0.01µF
*3 Vo≤2.6V version: Co=2.2µF
Connect control terminal to VIN terminal
VOUT2
5 Page 
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! ELECTRICAL CHARACTERISTICS
NJM2890_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 .0µ F( Ceramic)
Cp=0.01µF
Io=30mA
4 8 12
Time : t [mS]
16
10
5
0
-5
-10
-15
-20
-25
-30
20
3.1
3.08
3.06
3.04
3.02
3
2.98
2.96
2.94
0
NJM2890_3.0V
Load Transient Response
Output Current
Output Voltage
@:Ta=25oC
VDD=4.0V
Co =1 .0µ F(Ceramic)
Cp =0 .01µ F
40 80 120
Time : t [µS]
160
150
100
50
0
-50
-100
-150
-200
-250
200
NJM2890
NJM2890_3.0V
ON/OFF Transient Response without load
7 10
6
Control Voltage
5
5
0
4 -5
3
Output Voltage
2
-10
-15
1
@:Ta=25oC
VDD=4.0V
0 Co=1.0µF(Ceramic)
Cp =0 .01µ F
Io=0mA
-1
-20
-25
-30
01 234 5
Time : t [s]
3.1
3.08
3.06
3.04
3.02
3
2.98
2.96
2.94
0
NJM2890_3.0V
Line Transient Response
Input Volage
Output Voltage
@:Ta=25oC
VDD=4.0V
Co=1.0µF(Ceramic)
Cp =0 .01µ F
Io=30mA
40 80 120
Time : t [µS]
160
6
5
4
3
2
1
0
-1
-2
200
[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.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet NJM2890.PDF ] | |
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