Datasheet LTC3772 (Analog Devices) - 2

LTC3772
W W W U ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN).. – 0.3V to 10V Operating Temperature Range (Note 2) .. – 40°C to 85°C IPRG, PGATE Voltages .. – 0.3V to (VIN + 0.3V) Junction Temperature (Note 3) .. 125°C VFB, ITH/RUN Voltages ... –0.3V to 2.4V Storage Temperature Range ... – 65°C to 125°C SW Voltage ... – 2V to (VIN + 1V) or 10V Maximum Lead Temperature (Soldering, 10 sec) PGATE Peak Output Current (<10µs) .. 1A TSOT-23 ... 300°C
U W U PACKAGE/ORDER INFORMATION
ORDER PART ORDER PART TOP VIEW NUMBER NUMBER GND 1 8 PGATE LTC3772EDDB TOP VIEW LTC3772ETS8 V 2 7 FB VIN IPRG 1 8 NC 9 ITH/RUN 3 6 SW ITH/RUN 2 7 SW V I NC FB 3 6 VIN PRG 4 5 GND 4 5 PGATE DDB8 PART MARKING TS8 PART MARKING TS8 PACKAGE DDB PACKAGE 8-LEAD PLASTIC TSOT-23 8-LEAD (3mm × 2mm) PLASTIC DFN LBNR LTBNQ T TJMAX = 125°C, θJA = 230°C/W JMAX = 125°C, θJA = 76°C/W EXPOSED PAD (PIN 9) IS GND MUST BE SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
indicates specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 4.2V unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range ● 2.75 9.8 V Input DC Supply Current (Note 4) Normal Operation VITH/RUN = 1.3V 250 375 µA SLEEP Mode 40 60 µA Shutdown VITH/RUN = 0V 8 20 µA UVLO VIN < UVLO Threshold – 100mV 1 5 µA Undervoltage Lockout (UVLO) Threshold VIN Rising ● 2.0 2.75 V VIN Falling ● 1.85 2.60 V Start-Up Current Source VITH/RUN = 0V 0.7 1.2 1.7 µA Shutdown Threshold (at ITH/RUN) VITH/RUN Rising ● 0.3 0.6 0.95 V Regulated Feedback Voltage 0°C ≤ TA ≤ 85°C (Note 5) 0.788 0.800 0.812 V –40°C ≤ TA ≤ 85°C (Note 5) ● 0.780 0.800 0.812 V Feedback Voltage Line Regulation 2.75V ≤ VIN ≤ 9.8V (Note 5) 0.08 0.2 mV/V Feedback Voltage Load Regulation ITH/RUN = 1.6V (Note 5) 0.2 % ITH/RUN = 1V (Note 5) –0.2 % 3772f 2