Datasheet LTC1772B (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Constant Frequency Current Mode Step-Down DC/DC Controller in SOT-23 |
| Pages / Page | 16 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| File Format / Size | PDF / 226 Kb |
| Document Language | English |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
Model Line for this Datasheet
Text Version of Document
LTC1772B
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
Input Supply Voltage (VIN) ...– 0.3V to 10V TOP VIEW SENSE–, PGATE Voltages ...–0.3V to (VIN + 0.3V) ITH/RUN 1 6 PGATE VFB, ITH/RUN Voltages... –0.3V to 2.4V GND 2 5 VIN PGATE Peak Output Current (< 10µs) .. 1A VFB 3 4 SENSE– Storage Ambient Temperature Range...– 65°C to 150°C S6 PACKAGE Operating Temperature Range (Note 2).. –40°C to 85°C 6-LEAD PLASTIC TSOT-23 Junction Temperature (Note 3) .. 150°C TJMAX = 150°C, θJA = 230°C/W Lead Temperature (Soldering, 10 sec) .. 300°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC1772BES6#PBF LTC1772BES6#TRPBF LTVU 6-Lead Plastic TSOT Package –40°C to 85°C LTC1772BIS6#PBF LTC1772BIS6#TRPBF LTVU 6-Lead Plastic TSOT Package –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC1772BES6 LTC1772BES6#TR LTVU 6-Lead Plastic TSOT Package –40°C to 85°C LTC1772BIS6 LTC1772BIS6#TR LTVU 6-Lead Plastic TSOT Package –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 4.2V unless otherwise specifi ed. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Input DC Supply Current Typicals at VIN = 4.2V (Note 4) Normal Operation 2.4V ≤ VIN ≤ 9.8V, PGATE Logic High 270 420 μA Shutdown 2.4V ≤ VIN ≤ 9.8V, VITH/RUN = 0V 8 22 μA UVLO VIN < UVLO Threshold 6 10 μA Undervoltage Lockout Threshold VIN Falling l 1.55 2.00 2.35 V VIN Rising 1.85 2.10 2.40 V Shutdown Threshold (at ITH/RUN) l 0.15 0.35 0.55 V Start-Up Current Source VITH/RUN = 0V 0.25 0.5 0.85 μA Regulated Feedback Voltage 0°C to 70°C (Note 5) l 0.780 0.800 0.820 V –40°C to 85°C (Note 5) l 0.770 0.800 0.830 V Output Voltage Line Regulation 2.4V ≤ VIN ≤ 9.8V (Note 5) 0.05 mV/V Output Voltage Load Regulation ITH/RUN Sinking 5μA (Note 5) 2.5 mV/μA ITH/RUN Sourcing 5μA (Note 5) 2.5 mV/μA 1772bfa 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
Input Supply Voltage (VIN) ...– 0.3V to 10V TOP VIEW SENSE–, PGATE Voltages ...–0.3V to (VIN + 0.3V) ITH/RUN 1 6 PGATE VFB, ITH/RUN Voltages... –0.3V to 2.4V GND 2 5 VIN PGATE Peak Output Current (< 10µs) .. 1A VFB 3 4 SENSE– Storage Ambient Temperature Range...– 65°C to 150°C S6 PACKAGE Operating Temperature Range (Note 2).. –40°C to 85°C 6-LEAD PLASTIC TSOT-23 Junction Temperature (Note 3) .. 150°C TJMAX = 150°C, θJA = 230°C/W Lead Temperature (Soldering, 10 sec) .. 300°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC1772BES6#PBF LTC1772BES6#TRPBF LTVU 6-Lead Plastic TSOT Package –40°C to 85°C LTC1772BIS6#PBF LTC1772BIS6#TRPBF LTVU 6-Lead Plastic TSOT Package –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC1772BES6 LTC1772BES6#TR LTVU 6-Lead Plastic TSOT Package –40°C to 85°C LTC1772BIS6 LTC1772BIS6#TR LTVU 6-Lead Plastic TSOT Package –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 4.2V unless otherwise specifi ed. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
Input DC Supply Current Typicals at VIN = 4.2V (Note 4) Normal Operation 2.4V ≤ VIN ≤ 9.8V, PGATE Logic High 270 420 μA Shutdown 2.4V ≤ VIN ≤ 9.8V, VITH/RUN = 0V 8 22 μA UVLO VIN < UVLO Threshold 6 10 μA Undervoltage Lockout Threshold VIN Falling l 1.55 2.00 2.35 V VIN Rising 1.85 2.10 2.40 V Shutdown Threshold (at ITH/RUN) l 0.15 0.35 0.55 V Start-Up Current Source VITH/RUN = 0V 0.25 0.5 0.85 μA Regulated Feedback Voltage 0°C to 70°C (Note 5) l 0.780 0.800 0.820 V –40°C to 85°C (Note 5) l 0.770 0.800 0.830 V Output Voltage Line Regulation 2.4V ≤ VIN ≤ 9.8V (Note 5) 0.05 mV/V Output Voltage Load Regulation ITH/RUN Sinking 5μA (Note 5) 2.5 mV/μA ITH/RUN Sourcing 5μA (Note 5) 2.5 mV/μA 1772bfa 2
