DataSheet.es    


PDF L4925 Data sheet ( Hoja de datos )

Número de pieza L4925
Descripción VERY LOW DROP VOLTAGE REGULATOR
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



Hay una vista previa y un enlace de descarga de L4925 (archivo pdf) en la parte inferior de esta página.


Total 8 Páginas

No Preview Available ! L4925 Hoja de datos, Descripción, Manual

® L4925
VERY LOW DROP VOLTAGE REGULATOR
OPERATING DC SUPPLY VOLTAGE RANGE
6V TO 28V
TRANSIENT SUPPLY VOLTAGE UP TO 40V
EXTREMELY LOW QUIESCENT CURRENT
HIGH PRECISION OUTPUT VOLTAGE
OUTPUT CURRENT CAPABILITY UP TO
500mA
VERY LOW DROPOUT VOLTAGE LESS
THAN 0.6V
RESET CIRCUIT SENSING THE OUTPUT
VOLTAGE
PROGRAMMABLE RESET PULSE DELAY
WITH EXTERNAL CAPACITOR
THERMAL SHUTDOWN AND SHORT CIR-
CUIT PROTECTIONS
DESCRIPTION
The L4925 is a monolithic integrated 5V voltage
regulator with a very low dropout output and addi-
BLOCK DIAGRAM
Pentawatt
PowerSO20
ORDERING NUMBERS: L4925 (Pentawatt)
L4925PD (PowerSO20)
tional functions such as power-on reset and pro-
grammable reset delay time. It is designed for
supplying microcomputer controlled systems es-
pecially in automotive applications.
VS
CS
PREREGULATOR
5V
Vz
+
-
GND
REG
VREF
1.23V
Vz
2µ
RESET
L4925N
= 2V
VO
CT
RES
D95AT151
June 2000
1/8
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

1 page




L4925 pdf
L4925
RESET CIRCUIT
The block circuit diagram of the reset circuit is
shown in Figure 3. The reset circuit supervises
the output voltage. The reset threshold of 4.5V is
defined with the internal reference voltage and
standby output divider.
The reset pulse delay time tRD, is defined with the
charge time of an external capacitor CT:
tRD=CT2µxA2V
The reaction time of the reset circuit originates
from the discharge time limitation of the reset ca-
pacitor CT and it is proportional to the value of CT.
The reaction time of the reset circuit increases the
noise immunity.Standby output voltage drops be-
low the reset threshold only a bit longer than the
reaction time results in a shorter reset delay time.
The nominal reset delay time will be generated for
standby output voltage drops longer than approxi-
mately 50µs. The typical reset output waveforms
are shown in Figure 4.
Figure 3
Figure 4
5/8

5 Page










PáginasTotal 8 Páginas
PDF Descargar[ Datasheet L4925.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
L4920VERY LOWDROP ADJUSTABLE REGULATORSSTMicroelectronics
STMicroelectronics
L4921VERY LOWDROP ADJUSTABLE REGULATORSSTMicroelectronics
STMicroelectronics
L4922VERY LOW DROP REGULATOR WITH RESETSTMicroelectronics
STMicroelectronics
L4923WITH RESET AND INHIBIT 5V.1A VERY LOW DROP REGULATORSTMicroelectronics
STMicroelectronics

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
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,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar