Datasheet LT3471 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Dual 1.3A, 1.2MHz Boost/Inverter in 3mm × 3mm DFN |
| 页数 / 页 | 16 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| 文件格式/大小 | PDF / 307 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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LT3471
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
V TOP VIEW IN Voltage ..16V SW1, SW2 Voltage ... –0.4V to 42V FB1N 1 10 SW1 FB1N, FB1P, FB2N, FB2P Voltage... 12V or VIN – 1.5V FB1P 2 9 SHDN/SS1 SHDN/SS1, SHDN/SS2 Voltage ... 16V V 3 11 8 V REF IN V FB2P 4 7 SHDN/SS2 REF Voltage ...1.5V FB2N 5 6 SW2 Maximum Junction Temperature .. 125°C Operating Temperature Range (Note 2) ...– 40°C to 85°C DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN Storage Temperature Range ...– 65°C to 125°C TJMAX = 125°C, θJA = 43°C/ W, θJC = 3°C/W EXPOSED PAD (PIN 11) IS GND MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3471EDD#PBF LT3471EDD#TRPBF LBHM 10-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3471EDD LT3471EDD#TR LBHM 10-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
ELECTRICAL CHARACTERISTICS The
●
denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are TA = 25°C. VIN = VSHDN = 3V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 2.1 2.4 V Reference Voltage 0.991 1.000 1.009 V l 0.987 1.013 V Reference Voltage Current Limit (Note 3) 1 1.4 mA Reference Voltage Load Regulation 0mA ≤ IREF ≤ 100μA (Note 3) 0.1 0.2 %/100μA Reference Voltage Line Regulation 2.6V ≤ VIN ≤ 16V 0.03 0.08 %/V Error Amplifi er Offset Transition from Not Switching to Switching, VFBP = VFBN = 1V ±2 ±3 mV FB Pin Bias Current VFB = 1V (Note 3) l 60 100 nA Quiescent Current VSHDN = 1.8V, Not Switching 2.5 4 mA Quiescent Current in Shutdown VSHDN = 0.3V, VIN = 3V 0.01 1 μA Switching Frequency 1 1.2 1.4 MHz Maximum Duty Cycle 90 94 % l 86 % Minimum Duty Cycle 15 % Switch Current Limit At Minimum Duty Cycle 1.5 2.05 2.6 A At Maximum Duty Cycle (Note 4) 0.9 1.45 2.0 A Switch VCESAT ISW = 0.5A (Note 5) 150 250 mV Switch Leakage Current VSW = 5V 0.01 1 μA SHDN/SS Input Voltage High 1.8 V 3471fb 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
V TOP VIEW IN Voltage ..16V SW1, SW2 Voltage ... –0.4V to 42V FB1N 1 10 SW1 FB1N, FB1P, FB2N, FB2P Voltage... 12V or VIN – 1.5V FB1P 2 9 SHDN/SS1 SHDN/SS1, SHDN/SS2 Voltage ... 16V V 3 11 8 V REF IN V FB2P 4 7 SHDN/SS2 REF Voltage ...1.5V FB2N 5 6 SW2 Maximum Junction Temperature .. 125°C Operating Temperature Range (Note 2) ...– 40°C to 85°C DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN Storage Temperature Range ...– 65°C to 125°C TJMAX = 125°C, θJA = 43°C/ W, θJC = 3°C/W EXPOSED PAD (PIN 11) IS GND MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3471EDD#PBF LT3471EDD#TRPBF LBHM 10-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3471EDD LT3471EDD#TR LBHM 10-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ This product is only offered in trays. For more information go to: http://www.linear.com/packaging/
ELECTRICAL CHARACTERISTICS The
●
denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are TA = 25°C. VIN = VSHDN = 3V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 2.1 2.4 V Reference Voltage 0.991 1.000 1.009 V l 0.987 1.013 V Reference Voltage Current Limit (Note 3) 1 1.4 mA Reference Voltage Load Regulation 0mA ≤ IREF ≤ 100μA (Note 3) 0.1 0.2 %/100μA Reference Voltage Line Regulation 2.6V ≤ VIN ≤ 16V 0.03 0.08 %/V Error Amplifi er Offset Transition from Not Switching to Switching, VFBP = VFBN = 1V ±2 ±3 mV FB Pin Bias Current VFB = 1V (Note 3) l 60 100 nA Quiescent Current VSHDN = 1.8V, Not Switching 2.5 4 mA Quiescent Current in Shutdown VSHDN = 0.3V, VIN = 3V 0.01 1 μA Switching Frequency 1 1.2 1.4 MHz Maximum Duty Cycle 90 94 % l 86 % Minimum Duty Cycle 15 % Switch Current Limit At Minimum Duty Cycle 1.5 2.05 2.6 A At Maximum Duty Cycle (Note 4) 0.9 1.45 2.0 A Switch VCESAT ISW = 0.5A (Note 5) 150 250 mV Switch Leakage Current VSW = 5V 0.01 1 μA SHDN/SS Input Voltage High 1.8 V 3471fb 2