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L6996 Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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L6996 Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 26 page 1/26 L6996 July 2002 s 5 BIT DAC WITH AVAILABLE EXTERNAL OUTPUT VOLTAGE. s 0.6 TO 1.750V, DYNAMICALLY ADJUSTABLE OUTPUT VOLTAGE RANGE. s ±1% OUTPUT ACCURACY OVER LINE AND LOAD. s ACTIVE DROOP. s CONSTANT ON TIME TOPOLOGY ALLOWS LOW DUTY CYCLE AND FAST LOAD TRANSIENT. s 90% EFFICIENCY FROM 12V TO 1.35V/8A. s 1.750V TO 28V BATTERY INPUT RANGE. s OPERATING FREQUENCY UP TO 1MHZ. s INTEGRATED HIGH CURRENT DRIVERS. s LATCHED OVP AND UVP PROTECTIONS. OCP PROTECTION. s 350 µA TYP. QUIESCENT CURRENT. s 7 µA TYP. SHUTDOWN SUPPLY CURRENT. s PGOOD AND OVP SIGNALS. s ZERO-CURRENT DETECTION AND PULSE- FREQUENCY MODE. APPLICATIONS s ADVANCED MOBILE CPUs SUPPLY WITH DYNAMIC TRANSITIONS. s NOTEBOOK/LAPTOP, CONCEPT PC CPUs SUPPLY. s DC/DC FROM BATTERY SUPPLY EQUIPMENTS. DESCRIPTION The device is dc-dc controller specifically designed to provide extremely high efficiency conversion for mo- bile advanced microprocessors. The "constant on-time" topology assures fast load transient response. The embedded "voltage feedfor- ward" provides nearly constant switching frequency operation. A precise 5-bit DAC allows select output voltage from 0.6V to 1V with 25mV steps and from 1V to 1.75V with 50mV steps. L6996 is capable of supporting CPUs VID combina- tion changing during normal operation. The active droop allows adjust both the output load- line slope and the zero-load output voltage. TSSOP24 ORDERING NUMBERS: L6996D (TSSOP24) L6996DTR (Tape & Reel) DINAMICALLY PROGRAMMABLE SYNCHRONOUS STEP DOWN CONTROLLER FOR MOBILE CPUs APPLICATION DIAGRAM SENSE R VPROG C SS C SHDN 1.25V 5V 25V PGOOD OVP 5V VPROG VFB+ VFB- VID4:0 L V OUT HS LS DS L6996 CS- PGND LGATE CS+ GND PHASE HGATE ILIM BOOT OSC SS |
Codice articolo simile - L6996 |
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Descrizione simile - L6996 |
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