Datasheet LT3575 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Isolated Flyback Converter without an Opto-Coupler |
| 页数 / 页 | 24 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. ORDER INFORMATION. LEAD FREE … |
| 文件格式/大小 | PDF / 251 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. ORDER INFORMATION. LEAD FREE FINISH. TAPE AND REEL. PART MARKING*. PACKAGE DESCRIPTION
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LT3575
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION
SW ..60V TOP VIEW VIN, SHDN/UVLO, RFB, BIAS ...40V SS, V NC 1 16 NC C, TC, RREF, RILIM ..5V VIN 2 15 NC Maximum Junction Temperature .. 125°C SW 3 14 GND Operating Junction Temperature Range (Note 2) SW 4 17 13 TEST LT3575E, LT3575I .. –40°C to 125°C BIAS GND 5 12 TC Storage Temperature Range .. –65°C to 150°C SHDN/UVLO 6 11 RREF SS 7 10 RFB RILIM 8 9 VC FE PACKAGE 16-LEAD PLASTIC TSSOP TJMAX = 125°C, θJA = 38°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE CONNECTED TO GND
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3575EFE#PBF LT3575EFE#TRPBF 3575FE 16-Lead Plastic TSSOP –40°C to 125°C LT3575IFE#PBF LT3575IFE#TRPBF 3575FE 16-Lead Plastic TSSOP –40°C to 125°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 = 12V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range l 3 40 V Quiescent Current SS = 0V 4.5 mA VSHDN/UVLO = 0V 0 1 μA Soft-Start Current SS = 0.4V 7 μA SHDN/UVLO Pin Threshold UVLO Pin Voltage Rising l 1.15 1.22 1.32 V SHDN/UVLO Pin Hysteresis Current VUVLO = 1V 2.2 2.8 3.2 μA Soft-Start Threshold 0.7 V Maximum Switching Frequency 1000 kHz Switch Current Limit RILIM = 10k 2.8 3.5 4.2 A Minimum Current Limit VC = 0V 400 mA Switch VCESAT ISW = 0.5A 75 125 mV RREF Voltage VIN = 3V 1.21 1.23 1.25 V l 1.20 1.26 RREF Voltage Line Regulation 3V < VIN < 40V 0.01 0.03 %/ V RREF Pin Bias Current (Note 3) l 100 600 nA 3575f 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION
SW ..60V TOP VIEW VIN, SHDN/UVLO, RFB, BIAS ...40V SS, V NC 1 16 NC C, TC, RREF, RILIM ..5V VIN 2 15 NC Maximum Junction Temperature .. 125°C SW 3 14 GND Operating Junction Temperature Range (Note 2) SW 4 17 13 TEST LT3575E, LT3575I .. –40°C to 125°C BIAS GND 5 12 TC Storage Temperature Range .. –65°C to 150°C SHDN/UVLO 6 11 RREF SS 7 10 RFB RILIM 8 9 VC FE PACKAGE 16-LEAD PLASTIC TSSOP TJMAX = 125°C, θJA = 38°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE CONNECTED TO GND
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3575EFE#PBF LT3575EFE#TRPBF 3575FE 16-Lead Plastic TSSOP –40°C to 125°C LT3575IFE#PBF LT3575IFE#TRPBF 3575FE 16-Lead Plastic TSSOP –40°C to 125°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 = 12V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Voltage Range l 3 40 V Quiescent Current SS = 0V 4.5 mA VSHDN/UVLO = 0V 0 1 μA Soft-Start Current SS = 0.4V 7 μA SHDN/UVLO Pin Threshold UVLO Pin Voltage Rising l 1.15 1.22 1.32 V SHDN/UVLO Pin Hysteresis Current VUVLO = 1V 2.2 2.8 3.2 μA Soft-Start Threshold 0.7 V Maximum Switching Frequency 1000 kHz Switch Current Limit RILIM = 10k 2.8 3.5 4.2 A Minimum Current Limit VC = 0V 400 mA Switch VCESAT ISW = 0.5A 75 125 mV RREF Voltage VIN = 3V 1.21 1.23 1.25 V l 1.20 1.26 RREF Voltage Line Regulation 3V < VIN < 40V 0.01 0.03 %/ V RREF Pin Bias Current (Note 3) l 100 600 nA 3575f 2