LTC7862 FUNCTIONAL DIAGRAM WARNB DROPOUT CHARGE COOLDOWN PUMP SHDN DRVCC VIN OVLO DB CIN BOOST 1.2V CB TG TOP MTOP DROPOUT RUN 15M DROPOUT S Q (MAIN) DETECT SW 3V SWITCH R TOPON LOGIC DRVCC BG BOT MBOT (SYNCHRONOUS) 20µA GND FREQ CLK VCO L RSENSE ICMP IR VOUT COUT 2mV SENSE+ 1.8V SENSE– R V B FB SLOPE COMP EA 0.80V R SS A 0.88V 9V CC1 ITH 6V DRVUV CC2 RC DRVCC LDO/UVLO EXTVCC CONTROL V 3.5V IN 10µA EN EN 4.7V/7.7V SS VIN LDO EXTVCC LDO CSS DRVCC INTV COOLDOWN CC LDO SHDN INTVCC 40µA + DROPOUT S Q COOLDOWN 2.19V – TMR R C DROPOUT TMR COOLDOWN SHDN – 1.1µA 0.25V + 7862 BD01 Rev 0 For more information www.analog.com 11 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS TIMING DIAGRAM FUNCTIONAL DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION TYPICAL APPLICATION RELATED PARTS
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