Datasheet LTM4639 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Low VIN 20A DC/DC μModule (Power Module) Step-Down Regulator |
| Pages / Page | 32 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. 2.5V Input Efficiency Graph. 3.3V … |
| File Format / Size | PDF / 588 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. 2.5V Input Efficiency Graph. 3.3V Efficiency Graph. 5V Efficiency Graph
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Text Version of Document
LTM4639
TYPICAL PERFORMANCE CHARACTERISTICS 2.5V Input Efficiency Graph 3.3V Efficiency Graph 5V Efficiency Graph
100 100 100 95 95 95 90 90 90 85 85 85 EFFICIENCY (%) 5V TO 3.3V 80 EFFICIENCY (%) 80 EFFICIENCY (%) 3.3V TO 2.5V 80 5V TO 2.5V 2.5V TO 1.8V 3.3V TO 1.8V 5V TO 1.8V 75 2.5V TO 1.5V 75 3.3V TO 1.5V 75 5V TO 1.5V CPWR = 5V 2.5V TO 1.2V C 3.3V TO 1.2V PWR = 5V C 5V TO 1.2V PWR = VIN FREQ = 350kHz 2.5V TO 1V FREQ = 400kHz 3.3V TO 1V FREQ = 500kHz 5V TO 1V 70 70 70 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 OUTPUT CURRENT (A) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 4637 G01 4639 G02 4639 G03
2.5V to 1V with 7.5A/µs Load 2.5V to 1.2V with 7.5A/µs Load 7V Efficiency Graph Step, CPWR = 5V Step, CPWR = 5V
100 95 VOUT VOUT VP-P = 80mV VP-P = 80mV 90 85 LOAD LOAD 7V TO 5V STEP STEP EFFICIENCY (%) 80 7V TO 3.3V 0A TO 7.5A 0A TO 7.5A 7V TO 2.5V 7V TO 1.8V 75 7V TO 1.5V 4639 G05 4639 G06 CPWR = VIN 7V TO 1.2V 50µs/DIV 50µs/DIV FREQ = 550kHz 7V TO 1V COMPA CONNECTED TO COMPB COMPA CONNECTED TO COMPB 70 0 C C 2 4 6 8 10 12 14 16 18 20 FF = 180pF, CBOT = 22pF, CCOMPA = 180pF FF = 180pF, CBOT = 22pF, CCOMPA = 180pF C C OUTPUT CURRENT (A) OUT = 100µF CER ×2, OUT = 100µF CER ×2, 680µF 2.5V 6mΩ POSCAP ×2 680µF 2.5V 6mΩ POSCAP ×2 4639 G03
2.5V to 1.5V with 7.5A/µs Load 3.3V to 1V with 7.5A/µs Load 3.3V to 1.2V with 7.5A/µs Load Step, CPWR = 5V Step, CPWR = 5V Step, CPWR = 5V
VOUT VOUT VOUT VP-P = VP-P = 80mV VP-P = 80mV 80mV LOAD LOAD LOAD STEP STEP STEP 0A TO 0A TO 7.5A 0A TO 7.5A 7.5A 50µs/DIV 4639 G07 50µs/DIV 4639 G08 50µs/DIV 4639 G09 COMPA CONNECTED TO COMPB COMPA CONNECTED TO COMPB COMPA CONNECTED TO COMPB CFF = 180pF, CBOT = 22pF, CCOMPA = 180pF CFF = 180pF, CBOT = 22pF, CCOMPA = 180pF CFF = 180pF, CBOT = 22pF, CCOMPA = 180pF COUT = 100µF CER ×2, COUT = 100µF CER ×2, COUT = 100µF CER ×2, 680µF 2.5V 6mΩ POSCAP ×2 680µF 2.5V 6mΩ POSCAP ×2 680µF 2.5V 6mΩ POSCAP ×2 4639f For more information www.linear.com/LTM4639 5
TYPICAL PERFORMANCE CHARACTERISTICS 2.5V Input Efficiency Graph 3.3V Efficiency Graph 5V Efficiency Graph
100 100 100 95 95 95 90 90 90 85 85 85 EFFICIENCY (%) 5V TO 3.3V 80 EFFICIENCY (%) 80 EFFICIENCY (%) 3.3V TO 2.5V 80 5V TO 2.5V 2.5V TO 1.8V 3.3V TO 1.8V 5V TO 1.8V 75 2.5V TO 1.5V 75 3.3V TO 1.5V 75 5V TO 1.5V CPWR = 5V 2.5V TO 1.2V C 3.3V TO 1.2V PWR = 5V C 5V TO 1.2V PWR = VIN FREQ = 350kHz 2.5V TO 1V FREQ = 400kHz 3.3V TO 1V FREQ = 500kHz 5V TO 1V 70 70 70 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 16 18 20 OUTPUT CURRENT (A) OUTPUT CURRENT (A) OUTPUT CURRENT (A) 4637 G01 4639 G02 4639 G03
2.5V to 1V with 7.5A/µs Load 2.5V to 1.2V with 7.5A/µs Load 7V Efficiency Graph Step, CPWR = 5V Step, CPWR = 5V
100 95 VOUT VOUT VP-P = 80mV VP-P = 80mV 90 85 LOAD LOAD 7V TO 5V STEP STEP EFFICIENCY (%) 80 7V TO 3.3V 0A TO 7.5A 0A TO 7.5A 7V TO 2.5V 7V TO 1.8V 75 7V TO 1.5V 4639 G05 4639 G06 CPWR = VIN 7V TO 1.2V 50µs/DIV 50µs/DIV FREQ = 550kHz 7V TO 1V COMPA CONNECTED TO COMPB COMPA CONNECTED TO COMPB 70 0 C C 2 4 6 8 10 12 14 16 18 20 FF = 180pF, CBOT = 22pF, CCOMPA = 180pF FF = 180pF, CBOT = 22pF, CCOMPA = 180pF C C OUTPUT CURRENT (A) OUT = 100µF CER ×2, OUT = 100µF CER ×2, 680µF 2.5V 6mΩ POSCAP ×2 680µF 2.5V 6mΩ POSCAP ×2 4639 G03
2.5V to 1.5V with 7.5A/µs Load 3.3V to 1V with 7.5A/µs Load 3.3V to 1.2V with 7.5A/µs Load Step, CPWR = 5V Step, CPWR = 5V Step, CPWR = 5V
VOUT VOUT VOUT VP-P = VP-P = 80mV VP-P = 80mV 80mV LOAD LOAD LOAD STEP STEP STEP 0A TO 0A TO 7.5A 0A TO 7.5A 7.5A 50µs/DIV 4639 G07 50µs/DIV 4639 G08 50µs/DIV 4639 G09 COMPA CONNECTED TO COMPB COMPA CONNECTED TO COMPB COMPA CONNECTED TO COMPB CFF = 180pF, CBOT = 22pF, CCOMPA = 180pF CFF = 180pF, CBOT = 22pF, CCOMPA = 180pF CFF = 180pF, CBOT = 22pF, CCOMPA = 180pF COUT = 100µF CER ×2, COUT = 100µF CER ×2, COUT = 100µF CER ×2, 680µF 2.5V 6mΩ POSCAP ×2 680µF 2.5V 6mΩ POSCAP ×2 680µF 2.5V 6mΩ POSCAP ×2 4639f For more information www.linear.com/LTM4639 5
