|
|
PDF NJM12884 Data sheet ( Hoja de datos )
| Número de pieza | NJM12884 | |
| Descripción | LDO | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de NJM12884 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
NJM12884
LDO with Reverse Current Protection / Soft Start / Discharge Function
GENERAL DESCRIPTION
The NJM12884 is a low dropout regulator which achieves
high ripple rejection, low noise and high speed response with
the bipolar technology.
Adjustable soft-start function is useful for reducing inrush
current and controlling power-on sequence. Moreover the
discharge function makes effective sequence control with the
soft-start function.
In addition, the reverse current protection makes external
SBD unnecessary.
■ PACKAGE OUTLINE
NJM12884U2
NJM12884DL3
FEATURE
Operating Voltage Range 2.3V to 6.5V
Output Voltage Accuracy VO 1.0%
Output Current
IO(min.)=500mA
Reverse Current Protection
Adjustable soft-start Function
Discharge Function
ON/OFF Control
Correspond to Low ESR capacitor (MLCC)
Thermal Shutdown Circuit
Over Current Protection Circuit
Package Outline
SOT-89-5, TO-252-5
PIN CONFIGRATION
VOUT 1
GND 2
CS 3
5 VIN
2 GND
4 CONTROL
NJM12884U2
5 CS
4 VOUT
3 3 GND
2 VIN
1 CONTROL
NJM12884DL3
BLOCK DIAGRAM
VIN
CONTROL
Ver.2015-07-28
GND
Reverse
Current
Protection
Bandgap
Reference
Thermal
Protection
Over Current
Protection
VOUT
CS
-1-
1 page  
NJM12884
TEST CIRCUIT
A IIN
VIN VOUT
VIN 0.33μF NJM12884
(ceramic)
A ICONT CONTROL
V VCONT
GND
Cs
(*4)
0.33μF
(ceramic)
IOUT V VOUT
0.01μF
(ceramic)
*4: 2.9V<Vo 3.4V version :Co=0.47 F(Ceramic)
1.7V<Vo 2.9V version :Co=2.2 F(Ceramic)
Vo 1.7V version
:Co=4.7 F(Ceramic)
TYPICAL APPLICATION
1. In the case where ON/OFF Control is not required
VIN VIN
0.33μF
VOUT
(*5)
0.33μF
VOUT
NJM12884
CONTROL
*5: 2.9V<Vo 3.4V version :Co=0.47 F(Ceramic)
1.7V<Vo 2.9V version :Co=2.2 F(Ceramic)
Vo 1.7V version
:Co=4.7 F(Ceramic)
GND
Connect CONTROL Pin to VIN Pin
Cs
2. In use of ON/OFF CONTROL
VIN
VIN VOUT
0.33μF
NJM12884
*Connected when soft start
is Required.
VOUT
(*6)
0.33μF
CONTROL
GND
Cs
*6: 2.9V<Vo 3.4V version :Co=0.47 F(Ceramic)
1.7V<Vo 2.9V version :Co=2.2 F(Ceramic)
Vo 1.7V version
:Co=4.7 F(Ceramic)
State of CONTROL Pin:
“H” → output is enabled.
“L” or “open” → output is disabled
Ver.2015-07-28
*Connected when soft start
is Required.
-5-
5 Page 
NJM12884
NJM12884_3.3V
Control Voltage vs Temperature
2
1.8
@VIN=4.3V
CIN=0.33μF(Ceramic)
1.6
Cs=0.01μF(Ceramic)
Co=0.47μF(Ceramic)
1.4
1.2
1
0.8
0.6
0.4
0.2
0
-50 -25
0 25 50 75 100 125 150
Temperature: (ºC)
300
NJM12884_3.3V
Quiescent Current vs Temperature
250
200
150
100
@VIN=4.3V
Output is Open
except ICONT
50 CIN=0.33μF(Ceramic)
Cs=0.01μF(Ceramic)
Co=0.47μF(Ceramic)
0
-50 -25 0 25 50 75
Temperature: (ºC)
100
125
150
0.3
0.25
0.2
0.15
NJM12884_3.3V
Line Regulation vs Temperature
@VIN=4.3-6.5V
Io=100mA
CIN=0.33μF(Ceramic)
Cs=0.01μF(Ceramic)
Co=0.47μF(Ceramic)
0.1
0.05
0
-0.05
-0.1
-50 -25
0 25 50 75 100 125 150
Temperature: (ºC)
Ver.2015-07-28
NJM12884_3.3V
Control Current vs Temperature
12
@VCONT=1.6V
10
CIN=0.33μF(Ceramic)
Cs=0.01μF(Ceramic)
Co=0.47μF(Ceramic)
8
6
4
2
0
-50 -25
0 25 50 75 100 125 150
Temperature: (ºC)
NJM12884_3.3V
Discharge Current vs Temperature
40
35
@VIN=4.3V
VO=0.5V
30
CIN=0.33μF(Ceramic)
Cs=0.01μF(Ceramic)
Co=0.47μF(Ceramic)
25
20
15
10
5
0
-50 -25
0 25 50 75 100 125 150
Temperature: (ºC)
0.01
0.009
0.008
0.007
NJM12884_3.3V
Load Regulation vs Temperature
@VIN=4.3V
Io=0-500mA
CIN=0.33μF(Ceramic)
Cs=0.01μF(Ceramic)
Co=0.47μF(Ceramic)
0.006
0.005
0.004
0.003
0.002
0.001
0
-50 -25
0 25 50 75 100 125 150
Temperature: (ºC)
- 11 -
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet NJM12884.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| NJM12884 | LDO | New Japan Radio |
| NJM12888 | LDO | New Japan Radio |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |