Datasheet LTM4646 (Analog Devices) - 7

LTM4646
TYPICAL PERFORMANCE CHARACTERISTICS 2.5V Single Phase Single Output 3.3V Single Phase Single Output 5V Single Phase Single Output Load Transient Response Load Transient Response Load Transient Response
IOUT 5A/DIV IOUT IOUT 3.3A/DIV 3.3A/DIV 2.5VOUT 3.3VOUT 5V 67mV/DIV 67mV/DIV OUT 67mV/DIV 50µs/DIV 4646 G10 50µs/DIV 4646 G11 50µs/DIV 4646 G12 COUT = 100µF ×2, CERAMIC COUT = 100µF ×1, CERAMIC COUT = 100µF ×1, CERAMIC CCOMP = 100pF, CFF = 47pF CCOMP = 100pF, CFF = 47pF CCOMP = 100pF, CFF = 47pF f = 500kHz f = 750kHz f = 950kHz
Single Phase Single Output Single Phase Single Output Start-Up, No Load Start-Up, 10A Load Two-Phase Switching and Ripple
VOUT VOUT 0.5V/DIV 0.5V/DIV VOUT 5V/DIV VOUT 10mV/DIV IOUT IOUT 6.7A/DIV 6.7A/DIV 50ms/DIV 4646 G13 20ms/DIV 4646 G14 1µs/DIV 4646 G15 12VIN, 1.5VOUT AT NO LOAD 12VIN, 1.5VOUT AT 10A LOAD 12V TO 1V AT 20A TWO-PHASE COUT = 470µF ×1, 2.5V, SANYO POSCAP, COUT = 470µF ×1, 2.5V, SANYO POSCAP, 12V TO 1V AT 350kHz 100µF ×4, 6.3V, CERAMIC 100µF ×4, 6.3V, CERAMIC RIPPLE AT 20A LOAD SOFT-START CAPACITOR = 0.1µF SOFT-START CAPACITOR = 0.1µF COUT = 330μF, 9mΩ, 100μF ×4, CERAMIC USE RUN PIN TO CONTROL START-UP USE RUN PIN TO CONTROL START-UP
Short-Circuit Protection, No Load Short-Circuit Protection, 10A Load
VOUT VOUT 500mV/DIV 500mV/DIV IIN I 1A/DIV IN 1A/DIV 20ms/DIV 4646 G16 20ms/DIV 4646 G17 VIN = 12V V VIN = 12V OUT = 1.5V I VOUT = 1.5V OUT = NO LOAD IOUT = 10A Rev. A For more information www.analog.com 7 Document Outline Operation Applications Information Package Description Package Photo Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Revision History Package Photo Design Resources Related Parts