Datasheet LTM4639 (Analog Devices) - 6

LTM4639
TYPICAL PERFORMANCE CHARACTERISTICS 3.3V to 1.5V with 7.5A/µs Load 5V to 1.8V with 7.5A/µs Load 5V to 3.3V with 7.5A/µs Load Step, CPWR = 5V Step, CPWR = 5V Step, CPWR = 5V
VOUT VOUT VP-P = VP-P = 80mV VOUT 80mV VP-P = 250mV LOAD LOAD STEP STEP 0A TO 0A TO 7.5A LOAD 7.5A STEP 0A TO 7.5A 50µs/DIV 4639 G10 50µs/DIV 4639 G11 50µs/DIV 4639 G12 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 = NONE, CBOT = 22pF, CCOMPA = 180pF COUT = 100µF CER ×2, 680µF 2.5V 6mΩ POSCAP ×2 COUT = 100µF CER ×2, 680µF 2.5V 6mΩ POSCAP ×2 COUT = 47µF CER ×1, 220µF 6.3V 15mΩ POSCAP ×2
7V to 5V with 7.5A/µs Load Step, CPWR = 5V Turn-On No Load Start-Up Pre-Biased Load
SW SW VOUT VP-P = 400mV VOUT 0.5V/DIV VOUT 0.5V/DIV LOAD STEP 0A TO RUN RUN 7.5A 1V/DIV 2V/DIV 50µs/DIV 4639 G13 20ms/DIV 4639 G14 20ms/DIV 4639 G15 COMPA CONNECTED TO COMPB VIN = 5V VIN = 5V CFF = NONE, CBOT = 22pF, CCOMPA = 180pF VOUT = 1V VOUT = 1V, VOUT = 0.5V BIAS COUT = 22µF CER ×1, IOUT = 20A IOUT = 20A 150µF 6.3V 15mΩ POSCAP ×2
Recycling VIN (On-Off-On) Output Short-Circuit Output Ripple Noise
SW SW VP-P = 8mV I V IN OUT 200mA/DIV 0.5V/DIV VOUT 0.5V/DIV RUN 2V/DIV 4639 G17 1s/DIV 4639 G16 500µs/DIV 1µs/DIV 4639 G18 VIN = 5V VIN = 5V VIN = 3.3V VOUT = 1V VOUT = 1V VOUT = 1V IOUT = 20A 4639f 6 For more information www.linear.com/LTM4639