Datasheet LTM4642 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 20VIN, Dual 4A or Single 8A DC/DC μModule Regulator |
| Pages / Page | 32 / 5 — Typical perForMance characTerisTics. (Refer to Figures 19 and 20) TA = … |
| File Format / Size | PDF / 1.1 Mb |
| Document Language | English |
Typical perForMance characTerisTics. (Refer to Figures 19 and 20) TA = 25°C, unless otherwise noted
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LTM4642
Typical perForMance characTerisTics (Refer to Figures 19 and 20) TA = 25°C, unless otherwise noted. Efficiency vs Load Current at 3.3VIN, CCM Mode, External 5V Efficiency vs Load Current at Efficiency vs Load Current at Bias 5VIN, CCM Mode 12VIN, CCM Mode
100 100 100 98 95 95 96 90 90 94 92 85 85 12V TO 5V (1.2MHz) EFFICIENCY (%) 90 EFFICIENCY (%) 5V TO 3.3V (800kHz) EFFICIENCY (%) 12V TO 3.3V (1MHz) 3.3V TO 2.5V (600kHz) 80 5V TO 2.5V (800kHz) 80 12V TO 2.5V (1MHz) 88 3.3V TO 1.8V (600kHz) 5V TO 1.8V (750kHz) 12V TO 1.8V (800kHz) 3.3V TO 1.5V (600kHz) 75 5V TO 1.5V (650kHz) 75 12V TO 1.5V (800kHz) 86 3.3V TO 1.2V (600kHz) 5V TO 1.2V (650kHz) 12V TO 1.2V (650kHz) 3.3V TO 1V (600kHz) 5V TO 1V (650kHz) 12V TO 1V (650kHz) 84 70 70 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4642 G01 4642 G02 4642 G02
Efficiency vs Load Current at 3.3VIN to 1VOUT Transient 20VIN, CCM Mode Response 5VIN to 1VOUT Transient Response
100 20V TO 5V (1.2MHz) IN OUT IN OUT 95 20V TO 3.3V (1MHz) 20V TO 2.5V (1MHz) 90 1VOUT 1VOUT 20mV/DIV 20mV/DIV 85 80 ISTEP = 2A/µs ISTEP = 2A/µs 2A/DIV 2A/DIV EFFICIENCY (%) 75 4642 G05 4642 G06 70 20µs/DIV 20µs/DIV 20V TO 1.8V (800kHz) 20V TO 1.5V (800kHz) COUT = 100µF 15mΩ ESR POSCAP, COUT = 100µF 15mΩ ESR POSCAP, 65 20V TO 1.2V (650kHz) 47µF CERAMIC 47µF CERAMIC 20V TO 1V (650kHz) CFF = 470pF CFF = 470pF 60 f f 0 0.5 1 1.5 2 2.5 3 3.5 4 SW = 600kHz SW = 650kHz LOAD CURRENT (A) 4642 G04
12VIN to 1VOUT Transient 3.3VIN to 1.5VOUT Transient 5VIN to 1.5VOUT Transient Response Response Response
IN OUT IN OUT IN OUT 1VOUT 1.5VOUT 1.5VOUT 20mV/DIV 50mV/DIV 50mV/DIV ISTEP = I I 2A/µs STEP = 2A/µs STEP = 2A/µs 2A/DIV 2A/DIV 2A/DIV 4642 G07 20µs/DIV 4642 G08 20µs/DIV 4642 G09 20µs/DIV COUT = 100µF 15mΩ ESR POSCAP, COUT = 120µF 22mΩ ESR OSCON SVP, COUT = 120µF 22mΩ ESR OSCON SVP, 47µF CERAMIC 47µF CERAMIC 47µF CERAMIC CFF = 470pF CFF = 470pF CFF = 470pF fSW = 650kHz fSW = 600kHz fSW = 650kHz 4642fb For more information www.linear.com/LTM4642 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photograph Design Resources Related Parts
Typical perForMance characTerisTics (Refer to Figures 19 and 20) TA = 25°C, unless otherwise noted. Efficiency vs Load Current at 3.3VIN, CCM Mode, External 5V Efficiency vs Load Current at Efficiency vs Load Current at Bias 5VIN, CCM Mode 12VIN, CCM Mode
100 100 100 98 95 95 96 90 90 94 92 85 85 12V TO 5V (1.2MHz) EFFICIENCY (%) 90 EFFICIENCY (%) 5V TO 3.3V (800kHz) EFFICIENCY (%) 12V TO 3.3V (1MHz) 3.3V TO 2.5V (600kHz) 80 5V TO 2.5V (800kHz) 80 12V TO 2.5V (1MHz) 88 3.3V TO 1.8V (600kHz) 5V TO 1.8V (750kHz) 12V TO 1.8V (800kHz) 3.3V TO 1.5V (600kHz) 75 5V TO 1.5V (650kHz) 75 12V TO 1.5V (800kHz) 86 3.3V TO 1.2V (600kHz) 5V TO 1.2V (650kHz) 12V TO 1.2V (650kHz) 3.3V TO 1V (600kHz) 5V TO 1V (650kHz) 12V TO 1V (650kHz) 84 70 70 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (A) 4642 G01 4642 G02 4642 G02
Efficiency vs Load Current at 3.3VIN to 1VOUT Transient 20VIN, CCM Mode Response 5VIN to 1VOUT Transient Response
100 20V TO 5V (1.2MHz) IN OUT IN OUT 95 20V TO 3.3V (1MHz) 20V TO 2.5V (1MHz) 90 1VOUT 1VOUT 20mV/DIV 20mV/DIV 85 80 ISTEP = 2A/µs ISTEP = 2A/µs 2A/DIV 2A/DIV EFFICIENCY (%) 75 4642 G05 4642 G06 70 20µs/DIV 20µs/DIV 20V TO 1.8V (800kHz) 20V TO 1.5V (800kHz) COUT = 100µF 15mΩ ESR POSCAP, COUT = 100µF 15mΩ ESR POSCAP, 65 20V TO 1.2V (650kHz) 47µF CERAMIC 47µF CERAMIC 20V TO 1V (650kHz) CFF = 470pF CFF = 470pF 60 f f 0 0.5 1 1.5 2 2.5 3 3.5 4 SW = 600kHz SW = 650kHz LOAD CURRENT (A) 4642 G04
12VIN to 1VOUT Transient 3.3VIN to 1.5VOUT Transient 5VIN to 1.5VOUT Transient Response Response Response
IN OUT IN OUT IN OUT 1VOUT 1.5VOUT 1.5VOUT 20mV/DIV 50mV/DIV 50mV/DIV ISTEP = I I 2A/µs STEP = 2A/µs STEP = 2A/µs 2A/DIV 2A/DIV 2A/DIV 4642 G07 20µs/DIV 4642 G08 20µs/DIV 4642 G09 20µs/DIV COUT = 100µF 15mΩ ESR POSCAP, COUT = 120µF 22mΩ ESR OSCON SVP, COUT = 120µF 22mΩ ESR OSCON SVP, 47µF CERAMIC 47µF CERAMIC 47µF CERAMIC CFF = 470pF CFF = 470pF CFF = 470pF fSW = 650kHz fSW = 600kHz fSW = 650kHz 4642fb For more information www.linear.com/LTM4642 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Description Package Photograph Design Resources Related Parts
