Datasheet LTM4624 (Analog Devices) - 5

LTM4624
TYPICAL PERFORMANCE CHARACTERISTICS Start-Up with No Load Start-Up with 4A Load Short-Circuit with No Load
IIN IIN IIN 0.2A/DIV 0.5A/DIV 0.1A/DIV VOUT VOUT VOUT 0.5V/DIV 0.5V/DIV 0.5V/DIV VIN = 12V 5ms/DIV 4624 G09 VIN = 12V 5ms/DIV 4624 G10 VIN = 12V 20µs/DIV 4624 G11 VOUT = 1.5V VOUT = 1.5V VOUT = 1.5V INPUT CAPACITOR = 150µF SANYO ELECTROLYTIC INPUT CAPACITOR = 150µF SANYO ELECTROLYTIC INPUT CAPACITOR = 150µF SANYO ELECTROLYTIC CAPACITOR (OPTIONAL) + 22µF CERAMIC CAPACITOR CAPACITOR (OPTIONAL) + 22µF CERAMIC CAPACITOR CAPACITOR (OPTIONAL) + 22µF CERAMIC CAPACITOR OUTPUT CAPACITOR = 47µF CERAMIC CAPACITOR OUTPUT CAPACITOR = 47µF CERAMIC CAPACITOR OUTPUT CAPACITOR = 47µF CERAMIC CAPACITOR SOFT-START CAPACITOR = 0.1µF SOFT-START CAPACITOR = 0.1µF
Recovery to No Load Short-Circuit with 4A Load from Short Circuit Output Ripple
IIN 0.5A/DIV VOUT 200mV/DIV 5mV/DIV AC-COUPLED VOUT I 0.5V/DIV OUT 20A/DIV VIN = 12V 20µs/DIV 4624 G12 VIN = 12V 5µs/DIV 4624 G13 VIN = 12V 500µs/DIV 4624 G14 VOUT = 1.5V VOUT = 1V VOUT = 1.5V INPUT CAPACITOR = 150µF SANYO ELECTROLYTIC INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC CAPACITOR (OPTIONAL) + 22µF CERAMIC CAPACITOR CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC CAPACITOR CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC OUTPUT CAPACITOR = 47µF CERAMIC CAPACITOR OUTPUT CAPACITOR = 2× 47µF CERAMIC CAPACITOR CAPACITOR SOFT-START CAPACITOR = 0.1µF OUTPUT CAPACITOR = 2× 47µF CERAMIC CAPACITOR SOFT-START CAPACITOR = 0.1µF
12V Input to 1.8V Output, 5V Input to 1.2V Output, Start Into Pre-Bias Output 50% Load Transient Response 50% Load Transient Response
VIN 2V/DIV VOUT V 50mV/DIV V OUT OUT 100mV/DIV AC-COUPLED 1V/DIV AC-COUPLED LOAD STEP 2A/DIV LOAD STEP 1A/DIV VIN = 12V 1µs/DIV 4624 G15 VIN = 12V 50µs/DIV 4624 G16 VIN = 5V 50µs/DIV 4624 G17 VOUT = 5V VOUT = 1.8V VOUT = 1.2V INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC IOUT = 2A TO 4A, 1A/µs IOUT = 2A TO 4A, 1A/µs CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC CAPACITOR OUTPUT CAPACITOR = 1× 47µF CERAMIC OUTPUT CAPACITOR = 1× 47µF CERAMIC OUTPUT CAPACITOR = 2× 47µF CERAMIC CAPACITOR SOFT-START CAPACITOR = 0.1µF 4624fd For more information www.linear.com/LTM4624 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Package Photo Design Resources Related Parts