Datasheet LTM4622 (Analog Devices) - 6

LTM4622
TYPICAL PERFORMANCE CHARACTERISTICS Start-Up with No Load Current 3.3V Output Transient Response 5V Output Transient Response Applied
SW 10V/DIV V V OUT OUT 100mV/DIV 100mV/DIV AC-COUPLED AC-COUPLED VOUT LOAD STEP 1V/DIV LOAD STEP 1A/DIV RUN 1A/DIV 10V/DIV VIN = 12V 20µs/DIV 4622 G10 VIN = 12V 20µs/DIV 4622 G09 VOUT = 5V VIN = 12V 20ms/DIV 4622 G11 VOUT = 3.3V FS = 2.5MHz VOUT = 1.8V F OUTPUT CAPACITOR = 1 × 47µF CERAMIC S = 2MHz FS = 1MHz OUTPUT CAPACITOR = 1 × 47µF CERAMIC LOAD STEP = 1.25A TO 2.5A INPUT CAPACITOR = 1 × 22µF LOAD STEP = 1.25A TO 2.5A OUTPUT CAPACITOR = 1 × 22µF + 1 × 47µF CERAMIC SOFT-START CAP = 0.1µF
Start-Up with 2.5A Load Current Short-Circuit with No Load Short-Circuit with 2.5A Load Applied Current Applied Current Applied
SW SW SW 10V/DIV 10V/DIV 10V/DIV VOUT VOUT VOUT 1V/DIV 1V/DIV 1V/DIV RUN IIN IIN 10V/DIV 2A/DIV 500mA/DIV VIN = 12V 200ms/DIV 4622 G12 VIN = 12V 20µs/DIV 4622 G13 VIN = 12V 20µs/DIV 4622 G14 VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V FS = 1MHz FS = 1MHz FS = 1MHz INPUT CAPACITOR = 1 × 22µF INPUT CAPACITOR = 1 × 22µF INPUT CAPACITOR = 1 × 22µF OUTPUT CAPACITOR = 1 × 22µF + 1 × 47µF CERAMIC OUTPUT CAPACITOR = 1 × 22µF + 1 × 47µF CERAMIC OUTPUT CAPACITOR = 1 × 22µF + 1 × 47µF CERAMIC SOFT-START CAP = 0.1µF
Recover from Short-Circuit with Steady-State Output Voltage No Load Current Applied Ripple Start-Up into Pre-Biased Output
SW SW 10V/DIV 10V/DIV VOUT 10mV/DIV AC-COUPLED VOUT VOUT 1V/DIV 1V/DIV I SW IN RUN 2A/DIV 5V/DIV 10V/DIV VIN = 12V 20µs/DIV 4622 G15 VIN = 12V 1µs/DIV 4622 G16 VIN = 12V 50ms/DIV 4622 G17 VOUT = 1.8V VOUT = 1.8V VOUT = 1.8V FS = 1MHz FS = 1MHz FS = 1MHz INPUT CAPACITOR = 1 × 22µF INPUT CAPACITOR = 1 × 22µF INPUT CAPACITOR = 1 × 22µF OUTPUT CAPACITOR = 1 × 22µF + 1 × 47µF CERAMIC OUTPUT CAPACITOR = 1 × 22µF + 1 × 47µF CERAMIC OUTPUT CAPACITOR = 1 × 22µF + 1 × 47µF CERAMIC Rev. H 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information Safety Considerations Layout Checklist/Example Package Description Revision History Package Photo Design Resources Related Parts