Datasheet LTM4644, LTM4644-1 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Quad DC/DC µModule Regulator with Configurable 4A Output Array |
| Pages / Page | 36 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. 3.3V Output Transient Response. 5V … |
| Revision | G |
| File Format / Size | PDF / 2.7 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. 3.3V Output Transient Response. 5V Output Transient Response. Start-Up with No Load
Model Line for this Datasheet
Text Version of Document
LTM4644/LTM4644-1
TYPICAL PERFORMANCE CHARACTERISTICS 3.3V Output Transient Response 5V Output Transient Response Start-Up with No Load
VOUT VOUT 50mV/DIV 50mV/DIV IIN AC-COUPLED AC-COUPLED 0.1A/DIV LOAD STEP LOAD STEP VOUT 1A/DIV 1A/DIV 0.5V/DIV 20µs/DIV 4644 G07 20µs/DIV 4644 G08 5ms/DIV 4644 G09 VIN = 12V, VOUT = 3.3V, IOUT = 3A TO 4A, 1A/µs VIN = 12V, VOUT = 5V, IOUT = 3A TO 4A, 1A/µs VIN = 12V, VOUT = 1.5V OUTPUT CAPACITOR = 47µF CERAMIC OUTPUT CAPACITOR = 47µF CERAMIC INPUT CAPACITOR = 150µF SANYO ELECTROLYTIC CAPACITOR (OPTIONAL) + 22µF CERAMIC CAPACITOR OUTPUT CAPACITOR = 47µF CERAMIC CAPACITOR SOFT-START CAPACITOR = 0.1µF
Start-Up with 4A Load Short-Circuit with No Load Short-Circuit with 4A Load
IIN IIN IIN 0.2A/DIV 0.5A/DIV 0.5A/DIV VOUT VOUT VOUT 0.5V/DIV 0.5V/DIV 0.5V/DIV 5ms/DIV 4644 G10 20µs/DIV 4644 G11 20µs/DIV 4644 G12 VIN = 12V, VOUT = 1.5V VIN = 12V, VOUT = 1.5V VIN = 12V, 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
Recovery to No Load from Short-Circuit Output Ripple Start Into Pre-Biased Output
VIN 2V/DIV VOUT VOUT 200mV/DIV 5mV/DIV 1V/DIV AC-COUPLED IOUT 20A/DIV VIN = 12V 5µs/DIV 4644 G13 VIN = 12V 500µs/DIV 4644 G14 VIN = 12V 1µs/DIV 4644 G15 VOUT = 1V VOUT = 1.5V VOUT = 5V INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC CAP. CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC CAP. CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC CAP. OUTPUT CAPACITOR = 2× 47µF CERAMIC CAP. OUTPUT CAPACITOR = 2× 47µF CERAMIC CAP. OUTPUT CAPACITOR = 2× 47µF CERAMIC CAP. SOFT-START CAPACITOR = 0.1µF SOFT-START CAPACITOR = 0.1µF SOFT-START CAPACITOR = 0.1µF 20MHz MEASUREMENT BANDWIDTH Rev. G For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photo Design Resources Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS 3.3V Output Transient Response 5V Output Transient Response Start-Up with No Load
VOUT VOUT 50mV/DIV 50mV/DIV IIN AC-COUPLED AC-COUPLED 0.1A/DIV LOAD STEP LOAD STEP VOUT 1A/DIV 1A/DIV 0.5V/DIV 20µs/DIV 4644 G07 20µs/DIV 4644 G08 5ms/DIV 4644 G09 VIN = 12V, VOUT = 3.3V, IOUT = 3A TO 4A, 1A/µs VIN = 12V, VOUT = 5V, IOUT = 3A TO 4A, 1A/µs VIN = 12V, VOUT = 1.5V OUTPUT CAPACITOR = 47µF CERAMIC OUTPUT CAPACITOR = 47µF CERAMIC INPUT CAPACITOR = 150µF SANYO ELECTROLYTIC CAPACITOR (OPTIONAL) + 22µF CERAMIC CAPACITOR OUTPUT CAPACITOR = 47µF CERAMIC CAPACITOR SOFT-START CAPACITOR = 0.1µF
Start-Up with 4A Load Short-Circuit with No Load Short-Circuit with 4A Load
IIN IIN IIN 0.2A/DIV 0.5A/DIV 0.5A/DIV VOUT VOUT VOUT 0.5V/DIV 0.5V/DIV 0.5V/DIV 5ms/DIV 4644 G10 20µs/DIV 4644 G11 20µs/DIV 4644 G12 VIN = 12V, VOUT = 1.5V VIN = 12V, VOUT = 1.5V VIN = 12V, 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
Recovery to No Load from Short-Circuit Output Ripple Start Into Pre-Biased Output
VIN 2V/DIV VOUT VOUT 200mV/DIV 5mV/DIV 1V/DIV AC-COUPLED IOUT 20A/DIV VIN = 12V 5µs/DIV 4644 G13 VIN = 12V 500µs/DIV 4644 G14 VIN = 12V 1µs/DIV 4644 G15 VOUT = 1V VOUT = 1.5V VOUT = 5V INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC INPUT CAPACITOR = 22µF SANYO ELECTROLYTIC CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC CAP. CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC CAP. CAPACITOR (OPTIONAL) + 2× 22µF CERAMIC CAP. OUTPUT CAPACITOR = 2× 47µF CERAMIC CAP. OUTPUT CAPACITOR = 2× 47µF CERAMIC CAP. OUTPUT CAPACITOR = 2× 47µF CERAMIC CAP. SOFT-START CAPACITOR = 0.1µF SOFT-START CAPACITOR = 0.1µF SOFT-START CAPACITOR = 0.1µF 20MHz MEASUREMENT BANDWIDTH Rev. G For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Revision History Package Photo Design Resources Related Parts
