Datasheet LTC1772B (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Constant Frequency Current Mode Step-Down DC/DC Controller in SOT-23 |
| 页数 / 页 | 16 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| 文件格式/大小 | PDF / 226 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*
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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