Description
L4949ED STMicroelectronics Low Drop Out Regulator 5V 0.1A SMT / SMD SO-8
Key Features
ECOPACK®: lead free and RoHS compliant
Automotive Grade: compliance with AEC guidelines
Operating DC supply voltage range 5 V – 28 V
Transient supply voltage up to 40V
Extremely low quiescent current in standby mode
High precision standby output voltage 5V±1%
Output current capability up to 100mA
Very low dropout voltage less than 0.5V
Reset circuit sensing the output voltage
Programmable reset pulse delay with external capacitor
Voltage sense comparator
Thermal shutdown and short circuit protections
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.
Features
Operating DC supply voltage range 5 V – 28 V
Transient supply voltage up to 40V
Extremely low quiescent current in standby mode
¦High precision standby output voltage 5V±1%
¦Output current capability up to 100mA
¦Very low dropout voltage less than 0.5V
¦Reset circuit sensing the output voltage
¦Programmable reset pulse delay with external capacitor
¦Voltage sense comparator
¦Thermal shutdown and short circuit protections
Manufacturer: STMicroelectronics
Product Category: LDO Voltage Regulators
RoHS: RoHS Compliant Details
Brand: STMicroelectronics
Input Voltage MAX: 40 V
Output Voltage: 5 V
Output Current: 100 mA
Load Regulation: 30 mV
Output Type: Fixed
Maximum Operating Temperature: + 125 C
Mounting Style: SMD/SMT
Package / Case: SO-8
Dropout Voltage – Max: 500 mV
Line Regulation: 20 mV
Minimum Operating Temperature: – 40 C
Packaging: Tube
Series: L4949ED
OPERATING DC SUPPLY VOLTAGE RANGE – 28V TRANSIENT SUPPLY VOLTAGE TO 40V EXTREMELY LOW QUIESCENT CURRENT IN STANDBY MODE HIGH PRECISION STANDBY OUTPUT VOLTAGE 5V±1% OUTPUT CURRENT CAPABILITY TO 100mA VERY LOW DROPOUT VOLTAGE LESS THAN 0.5V RESET CIRCUIT SENSING THE OUTPUT VOLTAGE PROGRAMMABLE RESET PULSE DELAY WITH EXTERNAL CAPACITOR VOLTAGE SENSE COMPARATOR THERMAL SHUTDOWN AND SHORT CIRCUIT PROTECTIONS BLOCK DIAGRAM
DESCRIPTION The 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.
Symbol VSDC VSTR IO VO Parameter DC Operating Supply Voltage Transient Supply Voltage < 1s) Output Current Output Voltage Value 28 40 Internally Limited mA °C Unit V
VRES, VSO Output Voltage IRES, ISO Output Current IZ TJ Tstg Preregulator Output Voltage Preregulator Output Current Junction Temperature Storage Temperature Range
Symbol Rth j-amb Rth j-pins TJSD Description Thermal Resistance Junction-ambient Thermal Resistance Junction-pins Thermal Shutdown Junction temperature Max Minidip 50 15 Unit °C/W °C
Symbol VO VDP Parameter Output Voltage Output Voltage Output Voltage Dropout Voltage Test Condition 6V < VIN < 50mA VIN = 100mA VIN = 35mA Min. Typ. 5 Max. Unit
Input to Output Voltage Difference in Undervoltage Condition Max Output Leakage Line Regulation Load Regulation Current Limit
With this test we guarantee that with no output current the output voltage will not exceed 5.5V
VRT VRTH tRD VRL IRH VCTth VCTth, hy Reset Thereshold Voltage Reset Thereshold Hysteresis Reset Pulse Delay Reset Output Low Voltage Delay Comparator Thereshold Delay Comparator Thereshold Hysteresis TR 100µs RRES V mV
Reset Output High Leakage Current VRES = 5V
Vst Vsth VSL ISH ISI Sense Low Thereshold Sense Thereshold Hysteresis Sense Output Low Voltage Sense Output Leakage Sense Input Current VSI VS 3V RSO to VO VSO = 5V; VSI 1.5V VSI V µA
VZ IZ Preregulator Output Voltage Preregulator Output Current V µA
Manufacturer:STMicroelectronics
Datasheet:STMicro/CD00257532.pdf
