Datasheet LTC3626 (Analog Devices) - 7

LTC3626
Typical perForMance characTerisTics TA = 25°C, PVIN = SVIN = 12V, f = 1MHz unless otherwise noted. Output Voltage vs Time Output Voltage vs Time (Forced Load Regulation (Burst Mode Operation) Continuous Mode Operation)
1.0 0.8 V V 0.6 SW SW 5V/DIV 5V/DIV 0.4 (%) 0.2 V V OUT OUT OUT 20mV/DIV /V 0 20mV/DIV –0.2 I ∆V OUT L IL –0.4 1A/DIV 1A/DIV –0.6 4µs/DIV 3626 G18 VOUT = 1.8V 2µs/DIV 3626 G19 VOUT = 1.8V –0.8 Burst Mode OPERATION FORCED CONTINUOUS ILOAD = 100mA ILOAD = 100mA –1.0 0 0.5 1 1.5 2 2.5 ILOAD (A) 3626 G17
Start-Up from Shutdown Start-Up from Shutdown (Forced Output Tracking (Burst Mode Operation) Continuous Mode Operation)
VOUT RUN RUN 1V/DIV 2V/DIV 2V/DIV VOUT VOUT 1V/DIV 1V/DIV TRACK/SS V I I FB L L 500mV/DIV 1A/DIV 1A/DIV 2ms/DIV 3626 G20 VOUT = 1.8V 200µs/DIV 3626 G21 VOUT = 1.8V 200µs/DIV 3626 G22 VOUT = 1.8V ILOAD = 200mA ILOAD = 200mA ILOAD = 200mA CSS = 2.2nF CSS = 2.2nF
Load Step Load Step (Forced Continuous (Burst Mode Operation) Mode Operation)
ITH = INTVCC ITH = INTVCC VOUT VOUT 100mV/DIV 100mV/DIV AC-COUPLED AC-COUPLED IL IL 2.5A/DIV 2.5A/DIV 20µs/DIV 3626 G23 VOUT = 1.8V 20µs/DIV 3626 G24 VOUT = 1.8V COUT = 47µF COUT = 47µF ILOAD = 100mA TO 2.5A ILOAD = 100mA TO 2.5A 3626fa For more information www.linear.com/LTC3626 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts