Datasheet LTM4657 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 20VIN, 8A Step-Down DC/DC µModule Regulator |
| Pages / Page | 28 / 4 — TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency vs Load Current. from … |
| File Format / Size | PDF / 2.0 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. Efficiency vs Load Current. from 3.3VIN. from 5VIN. from 12VIN. 1V Output Transient Response
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LTM4657
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current from 3.3VIN from 5VIN from 12VIN
100 100 100 95 95 95 90 90 90 85 85 85 80 80 EFFICIENCY (%) 80 EFFICIENCY (%) EFFICIENCY (%) 75 75 12VIN, 1VOUT, 500kHz 5VIN, 1VOUT, 500kHz 12VIN, 1.5VOUT, 650kHz 75 3.3VIN, 1VOUT, 500kHz 5VIN, 1.5VOUT, 650kHz 12VIN, 2.5VOUT, 800kHz 3.3V 70 70 IN, 1.5VOUT, 650kHz 5VIN, 2.5VOUT, 800kHz 12VIN, 3.3VOUT, 1000kHz 3.3VIN, 2.5VOUT, 800kHz 5VIN, 3.3VOUT, 1000kHz 12VIN, 5VOUT, 1250kHz 70 65 65 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 OUTPUT LOAD CURRENT (A) OUTPUT LOAD CURRENT (A) OUTPUT LOAD CURRENT (A) 4657 G01 4657 G02 4657 G03
1V Output Transient Response 1.5V Output Transient Response 2.5V Output Transient Response
OUTPUT OUTPUT OUTPUT VOLTAGE VOLTAGE VOLTAGE 50mV/DIV 50mV/DIV 50mV/DIV LOAD LOAD LOAD CURRENT CURRENT CURRENT 1A/DIV 1A/DIV 1A/DIV 100µs/DIV 4657 G04 100µs/DIV 4657 G05 100µs/DIV 4657 G06 VIN = 12V, VOUT = 1V, fSW = 500kHz, VIN = 12V, VOUT = 1.5V, fSW = 650kHz, VIN = 12V, VOUT = 2.5V, fSW = 800kHz, COUT = 2× 100µF + 22µF CERAMIC CAP; COUT = 2× 100µF + 22µF CERAMIC CAP; COUT = 2× 100µF + 22µF CERAMIC CAP; COMPa = COMPb COMPa = COMPb COMPa = COMPb CFF = 100pF CFF = 100pF CFF = 100pF
3.3V Output Transient Response 5V Output Transient Response
OUTPUT OUTPUT VOLTAGE VOLTAGE 50mV/DIV 50mV/DIV LOAD LOAD CURRENT CURRENT 1A/DIV 1A/DIV 100µs/DIV 4657 G07 100µs/DIV 4657 G08 VIN = 12V, VOUT = 3.3V, fSW = 1000kHz, VIN = 12V, VOUT = 5V, fSW = 1250kHz, COUT = 2× 100µF + 22µF CERAMIC CAP; COUT = 2× 100µF + 22µF CERAMIC CAP; COMPa = COMPb COMPa = COMPb CFF = 100pF CFF = 100pF Rev 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Package Photo Design Resources Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current from 3.3VIN from 5VIN from 12VIN
100 100 100 95 95 95 90 90 90 85 85 85 80 80 EFFICIENCY (%) 80 EFFICIENCY (%) EFFICIENCY (%) 75 75 12VIN, 1VOUT, 500kHz 5VIN, 1VOUT, 500kHz 12VIN, 1.5VOUT, 650kHz 75 3.3VIN, 1VOUT, 500kHz 5VIN, 1.5VOUT, 650kHz 12VIN, 2.5VOUT, 800kHz 3.3V 70 70 IN, 1.5VOUT, 650kHz 5VIN, 2.5VOUT, 800kHz 12VIN, 3.3VOUT, 1000kHz 3.3VIN, 2.5VOUT, 800kHz 5VIN, 3.3VOUT, 1000kHz 12VIN, 5VOUT, 1250kHz 70 65 65 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 OUTPUT LOAD CURRENT (A) OUTPUT LOAD CURRENT (A) OUTPUT LOAD CURRENT (A) 4657 G01 4657 G02 4657 G03
1V Output Transient Response 1.5V Output Transient Response 2.5V Output Transient Response
OUTPUT OUTPUT OUTPUT VOLTAGE VOLTAGE VOLTAGE 50mV/DIV 50mV/DIV 50mV/DIV LOAD LOAD LOAD CURRENT CURRENT CURRENT 1A/DIV 1A/DIV 1A/DIV 100µs/DIV 4657 G04 100µs/DIV 4657 G05 100µs/DIV 4657 G06 VIN = 12V, VOUT = 1V, fSW = 500kHz, VIN = 12V, VOUT = 1.5V, fSW = 650kHz, VIN = 12V, VOUT = 2.5V, fSW = 800kHz, COUT = 2× 100µF + 22µF CERAMIC CAP; COUT = 2× 100µF + 22µF CERAMIC CAP; COUT = 2× 100µF + 22µF CERAMIC CAP; COMPa = COMPb COMPa = COMPb COMPa = COMPb CFF = 100pF CFF = 100pF CFF = 100pF
3.3V Output Transient Response 5V Output Transient Response
OUTPUT OUTPUT VOLTAGE VOLTAGE 50mV/DIV 50mV/DIV LOAD LOAD CURRENT CURRENT 1A/DIV 1A/DIV 100µs/DIV 4657 G07 100µs/DIV 4657 G08 VIN = 12V, VOUT = 3.3V, fSW = 1000kHz, VIN = 12V, VOUT = 5V, fSW = 1250kHz, COUT = 2× 100µF + 22µF CERAMIC CAP; COUT = 2× 100µF + 22µF CERAMIC CAP; COMPa = COMPb COMPa = COMPb CFF = 100pF CFF = 100pF Rev 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Package Description Package Photo Design Resources Related Parts
