L4937N Datasheet PDF | STMicroelectronics

STMicroelectronics L4937N

The L4937N is a monolithic integrated dual voltage regulatorswith two very low dropout outputsand additional functions such as power-on reset and input voltage sense. It is designed for supplying microcomputer controlled systems specially in automotive applications. 2 : Foldback characteristic FUNCTIONAL DESCRIPTION The L4937N is based on the SGS-THOMSON Microelectronics modular voltage regulatorapproach.

Part No.	L4937N
Datasheet	L4937N Download
Manufacturer	STMicroelectronics
Description	DUAL MULTIFUNCTION VOLTAGE REGULATOR
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DESCRIPTION

PIN CONNECTION (top view) June 2000 1/9 L4937N BLOCK DIAGRAM THERMAL DATA Symbol Rthj-case Parameter Thermal Resistance Junction-Case Max. Value 3 Unit °C/W 2/9 L4937N

ABSOLUTE MAXIMUM RATINGS

Symbol VS Tj, Tstg IEN VEN VRES IRES PD DC Supply Voltage Transient Supply Voltage (T < 1s) Junction and Storage Temperature Range Enable Input Current (V EN ≤0.3V) Enable Input Voltage Reset Output Voltage Reset Output Current Power Dissipation (TA = 80°C, R th heatsink = 9°C/W) Parameter Value 28 40 –55 to 150 ±1 VS 20 5 5 V mA W Unit V V °C mA Note : The circuit is ESD protected according to MIL–STD–883C. APPLICATION CIRCUIT CS ≥ 1µF ; C01 ≥ 6µF ; C02 ≥ 10µF, ESR < 10Ω at 10KHz 3/9 L4937N

ELECTRICAL CHARACTERISTICS

(VS = 14V; –40°C ≤ Tj ≤ 125°C unless otherwise specified) Symbol VS VO1 VO2 - VO1 Parameter Operating Supply Voltage Standby Output Voltage Output Voltage 2 Tracking Error (note 1) Dropout Voltage 1 Input to Output Voltage Difference in Undervoltage Condition Dropout Vol...