Datasheet LTM4611 (Analog Devices) - 6

LTM4611
Typical perForMance characTerisTics Pulse-Skipping Mode Efficiency 1V Transient Response, 3.3VIN 1V Transient Response, 5VIN
95 90 85 80 VOUT VOUT 50mV/DIV 50mV/DIV 75 3.3VIN TO 1.5VOUT AC-COUPLED AC-COUPLED 70 5VIN TO 1VOUT 65 I I 60 LOAD LOAD 5A/DIV 5A/DIV 55 EFFICIENCY (%) 50 20µs/DIV 4611 G08 20µs/DIV 4611 G09 45 VIN = 3.3V, VOUT = 1V, USING DIFF AMP VIN = 5V, VOUT = 1V, USING DIFF AMP 40 4 × 100µF CERAMIC OUTPUT CAPACITORS 4 × 100µF CERAMIC OUTPUT CAPACITORS 35 CFF = 47pF, CP = NONE CFF = 47pF, CP = NONE 7.5A LOAD STEP AT 7.5A/µs 7.5A LOAD STEP AT 7.5A/µs 300.1 1 10 OUTPUT CURRENT (A) 4611 G07
3.3V Transient Response, 5VIN Start-Up, No Load Start-Up, 15A Load
VIN 1V/DIV VOUT V 50mV/DIV IN 1V/DIV AC-COUPLED VOUT 500mV/DIV VOUT ILOAD I 500mV/DIV 5A/DIV LOAD 5A/DIV IIN IIN 1A/DIV 5A/DIV 20µs/DIV 4611 G10 1ms/DIV 4611 G11 1ms/DIV 4611 G12 VIN = 5V, VOUT = 3.3V, USING DIFF AMP VIN = 3.3V, VOUT = 1.5V, NO LOAD VIN = 3.3V, VOUT = 1.5V, 100mΩ LOAD 2 × 100µF CERAMIC OUTPUT CAPACITORS 3 × 22µF CERAMIC INPUT CAPACITORS 3 × 22µF CERAMIC INPUT CAPACITORS CFF = 10pF, CP = NONE CSS = 10nF CSS = 10nF 7.5A LOAD STEP AT 7.5A/µs 4 × 100µF CERAMIC OUTPUT CAPACITORS 4 × 100µF CERAMIC OUTPUT CAPACITORS CFF = 33pF, CP = 10pF CFF = 33pF, CP = 10pF
Start-Up, Pre-Bias Short-Circuit, 15A Short-Circuit, No Load
VOUT 500mV/DIV VOUT VOUT 500mV/DIV 500mV/DIV ILOAD 2mA/DIV IIN 1A/DIV IIN IIN RUN 2A/DIV 1A/DIV 5V/DIV 2ms/DIV 4611 G13 20µs/DIV 4611 G14 20µs/DIV 4611 G15 VIN = 3.3V, VOUT = 1.5V, 0.75V PRE-BIAS LOAD VIN = 3.3V, VOUT = 1.5V VIN = 3.3V, VOUT = 1.5V 3 × 22µF CERAMIC INPUT CAPACITORS 15A LOAD PRIOR TO SHORT NO LOAD PRIOR TO SHORT CSS = 10nF 4 × 100µF CERAMIC OUTPUT CAPACITORS CFF = 33pF, CP = 10pF 4611fb 6 For more information www.linear.com/LTM4611 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 Typical Applications Package Photograph Package Description Revision History Typical Application Related Parts