Datasheet LTC3617 (Analog Devices) - 5

LTC3617
typical perForMance characteristics TA = 25°C, VIN = 3.3V, fO = 1MHz unless otherwise noted. Sinking Current Internal Start-Up Tracking Up/Down
RUN 5V/DIV PGOOD SW PGOOD 5V/DIV 2V/DIV 5V/DIV VOUT/VTTR 500mV/DIV V V OUT OUT 20mV/DIV 500mV/DIV VDDQIN IL I 2V/DIV 2A/DIV L 2A/DIV 2µs/DIV 3617 G10 500µs/DIV 3617 G11 2ms/DIV 3617 G12 VOUT = 1.25V VOUT = 1.25V VOUT = 1.25V ILOAD = –3A ILOAD = 0A ILOAD = 3A
Switch On-Resistance Switch On-Resistance vs Input Voltage vs Temperature
50 50 40 40 MAIN SWITCH MAIN SWITCH 30 30 (mΩ) (mΩ) SYNCHRONOUS SWITCH SYNCHRONOUS SWITCH R DS(0N) 20 R DS(0N) 20 10 10 0 0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 –50 –30 –10 10 30 50 70 90 110 130 INPUT VOLTAGE (V) TEMPERATURE (°C) 3617 G14 3617 G15
Frequency vs RT Resistor Frequency vs Temperature
4.5 0.8 RT = SVIN RT = SVIN 4.0 0.6 3.5 0.4 3.0 0.2 0 2.5 –0.2 2.0 –0.4 FREQUENCY (MHz) 1.5 –0.6 1.0 FREQUENCY VARIATION (%) –0.8 0.5 –1.0 0 –1.2 0 200 400 600 800 1000 1200 1400 –50 –30 –10 10 30 50 70 90 100 130 RESISTOR ON RT/SYNC PIN (kΩ) TEMPERATURE (°C) 3617 G16 3617 G17 3617fa 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts