Product Summary

DESCRIPTION:The L4949E is a monolithic integrated 5V voltage 

regulator with a very low dropout output and additional functions as power-on reset and input voltage sense. It is designed for supplying the microcomputer controlled systems especially in
automotive applications

Parametrics

ABSOLUTE MAXIMUM RATINGS


VSDC DC Operating Supply Voltage: 28 V
VSTR Transient Supply Voltage (T < 1s) :40 V
IO Output Current Internally Limited
VO Output Voltage :20 V
VRES, VSO Output Voltage :20 V
IRES, ISO Output Current :5 mA
VZ Preregulator Output Voltage :7 V
IZ Preregulator Output Current :5 mA
TJ Junction Temperature: -40 to +150 °C
Tstg Storage Temperature Range :-55 to +150 °C

Features

(1)OPERATING DC SUPPLY VOLTAGE RANGE 5V - 28V; 
(2)TRANSIENT SUPPLY VOLTAGE UP TO 40V; 
(3)EXTREMELY LOW QUIESCENT CURRENT IN STANDBY MODE; 
(4)HIGH PRECISION STANDBY OUTPUT VOLTAGE 5V±1%; 
(5)OUTPUT CURRENT CAPABILITY UP TO 100mA; 
(6)VERY LOW DROPOUT VOLTAGE LESS THAN 0.5V; 
(7)RESET CIRCUIT SENSING THE OUTPUT VOLTAGE; 
(8)PROGRAMMABLE RESET PULSE DELAY WITH EXTERNAL CAPACITOR; 
(9)VOLTAGE SENSE COMPARATOR; 
(10)THERMAL SHUTDOWN AND SHORT CIRCUIT PROTECTIONS

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
L4949EP
L4949EP
STMicroelectronics
Low Dropout (LDO) Regulators 5V Multifunction LDO
Data Sheet
0-480: $0.65
480-500: $0.58
500-1000: $0.44
1000-2000: $0.41
L4949EP013TR
L4949EP013TR
STMicroelectronics
Low Dropout (LDO) Regulators 5V Multifunction LDO
Data Sheet
0-1: $0.98
1-10: $0.89
10-100: $0.83
100-250: $0.65
L4949EP-E
L4949EP-E
STMicroelectronics
Low Dropout (LDO) Regulators Multi Low Drop Volt 5V to 28V Reg
Data Sheet
0-480: $0.65
480-500: $0.58
500-1000: $0.44
1000-2000: $0.41
L4949EPTR-E
L4949EPTR-E
STMicroelectronics
Low Dropout (LDO) Regulators Multi Low Drop Volt 5V to 28V Reg
Data Sheet
0-1: $0.98
1-10: $0.89
10-100: $0.83
100-250: $0.65
L4949EDTRWTR
L4949EDTRWTR
STMicroelectronics
Low Dropout (LDO) Regulators BODY SMARTPOWER
Data Sheet
0-1840: $0.42
1840-2500: $0.41
2500-5000: $0.40
5000-10000: $0.38
L4949EDTR-E
L4949EDTR-E
STMicroelectronics
Low Dropout (LDO) Regulators 5V MULTIFUNCTION LDO
Data Sheet
0-1700: $0.33
1700-2500: $0.31
2500-5000: $0.28
5000-10000: $0.28
L4949ED-E
L4949ED-E
STMicroelectronics
Low Dropout (LDO) Regulators 5V MULTIFUNCTION LDO
Data Sheet
0-1: $0.56
1-10: $0.52
10-100: $0.43
100-250: $0.41
L4949ED013TR
L4949ED013TR
STMicroelectronics
Low Dropout (LDO) Regulators 5V Multifunction LDO
Data Sheet
0-1: $0.56
1-10: $0.52
10-100: $0.43
100-250: $0.41