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L5994 Datasheet

Part Number L5994
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER
Datasheet L5994 DatasheetL5994 Datasheet (PDF)

® L5994 ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER PRODUCT PREVIEW DUAL PWM BUCK CONTROLLERS ADJUSTABLE 1.9V to 5V (Section 1) 1.66V to 3.5V (Section 2) 12V/120mA LINEAR REGULATOR DUAL SYNCH RECTIFIERS DRIVERS 96% EFFICIENCY ACHIEVABLE 50µA (@ 12V) STAND BY CONSUMPTION 5.0V TO 25V SUPPLY VOLTAGE EXCELLENT LOAD TRANSIENT RESPONSE DISABLE PULSE SKIPPING FUNCTION OUTPUT UNDERVOLTAGE SHUTDOWN POWER MANAGEMENT: - UNDER AND OVERVOLTAGE OUTPUT DETECTION - POWER GOOD SIGNAL - SEPARATED DISABLE T.

  L5994   L5994






Part Number L5996
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description 5 BIT DYNAMIC DAC CONTROLLER FOR MOBILE CPU
Datasheet L5994 DatasheetL5996 Datasheet (PDF)

® L5996 5 BIT DYNAMIC DAC CONTROLLER FOR MOBILE CPU PRELIMINARY DATA DYNAMIC DAC DETECTION ON CHIP PROGRAMMABLE OUTPUT FROM 0.925V TO 2.0V WITH 0.05V AND 0.025V BINARY STEPS ULTRA HIGH EFFICIENCY SEPARATE 5V BIAS SUPPLY AVAILABLE FOR HIGH EFFICIENCY PERFORMANCE EXCELLENT OUTPUT ACCURACY ±1% OVER LINE, LOAD AND TEMPERATURE VARIATIONS HIGH PRECISION INTERNAL REFERENCE DIGITALLY TRIMMED OPERATING SUPPLY VOLTAGE FROM 4.75V TO 25V VERY FAST LOAD TRANSIENT REMOTE SENSING INPUTS INTERNAL LINEAR REGU.

  L5994   L5994







Part Number L5993
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description CONSTANT POWER CONTROLLER
Datasheet L5994 DatasheetL5993 Datasheet (PDF)

® L5993 CONSTANT POWER CONTROLLER CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz LOW START-UP CURRENT (< 120µA) CONSTANT OUTPUT POWER VS. SWITCHING FREQUENCY HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A) FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION PROGRAMMABLE DUTY CYCLE 100%AND 50% MAXIMUM DUTY CYCLE LIMIT PROGRAMMABLE SOFT START PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY PWM UVLO WITH HYSTERESIS IN/OUT SYNCHRONIZATION LATCHED DISABLE INTERNAL 100ns .

  L5994   L5994







Part Number L5991A
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description PRIMARY CONTROLLER
Datasheet L5994 DatasheetL5991A Datasheet (PDF)

L5991 ® L5991A PRIMARY CONTROLLER WITH STANDBY CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz LOW START-UP CURRENT (< 120µA) HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A) FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION PROGRAMMABLE DUTY CYCLE 100% AND 50% MAXIMUM DUTY CYCLE LIMIT STANDBY FUNCTION PROGRAMMABLE SOFT START PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY PWM UVLO WITH HYSTERESIS IN/OUT SYNCHRONIZATION LATCHED DISABLE INTERNAL 100ns LEADING EDGE .

  L5994   L5994







Part Number L5991
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description PRIMARY CONTROLLER
Datasheet L5994 DatasheetL5991 Datasheet (PDF)

L5991 ® L5991A PRIMARY CONTROLLER WITH STANDBY CURRENT-MODE CONTROL PWM SWITCHING FREQUENCY UP TO 1MHz LOW START-UP CURRENT (< 120µA) HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWER MOSFET (1A) FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION PROGRAMMABLE DUTY CYCLE 100% AND 50% MAXIMUM DUTY CYCLE LIMIT STANDBY FUNCTION PROGRAMMABLE SOFT START PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY PWM UVLO WITH HYSTERESIS IN/OUT SYNCHRONIZATION LATCHED DISABLE INTERNAL 100ns LEADING EDGE .

  L5994   L5994







ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER

® L5994 ADJUSTABLE TRIPLE OUTPUT POWER SUPPLY CONTROLLER PRODUCT PREVIEW DUAL PWM BUCK CONTROLLERS ADJUSTABLE 1.9V to 5V (Section 1) 1.66V to 3.5V (Section 2) 12V/120mA LINEAR REGULATOR DUAL SYNCH RECTIFIERS DRIVERS 96% EFFICIENCY ACHIEVABLE 50µA (@ 12V) STAND BY CONSUMPTION 5.0V TO 25V SUPPLY VOLTAGE EXCELLENT LOAD TRANSIENT RESPONSE DISABLE PULSE SKIPPING FUNCTION OUTPUT UNDERVOLTAGE SHUTDOWN POWER MANAGEMENT: - UNDER AND OVERVOLTAGE OUTPUT DETECTION - POWER GOOD SIGNAL - SEPARATED DISABLE THERMAL SHUTDOWN PACKAGE: TQFP32 APPLICATION NOTEBOOK AND SUBNOTEBOOK COMPUTERS PEN TOP AND PORTABLE EQUIPMENT COMMUNICATING COMPUTERS DESCRIPTION The L5994 is a sophisticated dual PWM stepdown controller and power monitor intended for SYSTEM BLOCK DIAGRAM TQFP32 ORDERING NUMBER: L5994 Notebook computer and/or battery powered equipment. The device produces regulated 1.8V, 2.5V (both adjustable) and 12V supplies for use in portable and PCMCIA applications. The internal architecture allows to operate with minimum external components count. A very high switching frequency (200/300 KHz or externally synchronizable) optimizes their physical dimensions. Synchronous rectification and pulse skipping mode for the buck sections optimise the overall efficiency over a wide load current range. The two high performance PWM controllers for 1.8V and 2.5V lines are monitored for overvoltage, undervoltage and overcurrent conditions. On detection of a fault, a POWER GOOD signal is generated and a specif.


2005-03-22 : 12CWQ10FN    12H3020-2    12H3040-2    12TQ045S    MI31T    MI31TA    MI32T    MI32T-L    MI32TA    MI33T   


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