Datasheet LT3493 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | 1.2A, 750kHz Step-Down Switching Regulator in 2mm × 3mm DFN |
| 页数 / 页 | 20 / 2 — ABSOLUTE MAXIMUM RATINGS. PIN CONFIGURATION. (Note 1). ORDER INFORMATION. … |
| 文件格式/大小 | PDF / 607 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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LT3493
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
TOP VIEW Input Voltage (VIN) ..40V BOOST Pin Voltage ..50V FB 1 6 SHDN BOOST Pin Above SW Pin ...25V GND 2 7 5 VIN SHDN Pin ..40V BOOST 3 4 SW FB Voltage ...6V Operating Temperature Range (Note 2) DCB PACKAGE 6-LEAD (2mm s 3mm) PLASTIC DFN LT3493E .. –40°C to 85°C TJMAX = 125°C, θJA = 64°C/W LT3493I ... –40°C to 125°C EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB Maximum Junction Temperature .. 125°C Storage Temperature Range ... –65°C to 150°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3493EDCB#PBF LT3493EDCB#TRPBF LCGG 6-Lead (2mm × 3mm) Plastic DFN –40°C to 85°C LT3493IDCB#PBF LT3493IDCB#TRPBF LCGH 6-Lead (2mm × 3mm) Plastic DFN –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3493EDCB LT3493EDCB#TR LCGG 6-Lead (2mm × 3mm) Plastic DFN –40°C to 85°C LT3493IDCB LT3493IDCB#TR LCGH 6-Lead (2mm × 3mm) Plastic DFN –40°C to 125°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/ 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, VBOOST = 17V, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Range 3.6 36 V Undervoltage Lockout 3.1 3.4 3.6 V Feedback Voltage l 765 780 795 mV FB Pin Bias Current VFB = Measured VREF + 10mV (Note 4) l 50 150 nA Quiescent Current Not Switching 1.9 2.5 mA Quiescent Current in Shutdown VSHDN = 0V 0.01 2 μA Reference Line Regulation VIN = 5V to 36V 0.007 %/V Switching Frequency VFB = 0.7V 685 750 815 kHz VFB = 0V 36 kHz Maximum Duty Cycle l 88 95 % TA = 25°C 91 95 % 3493fb 2
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
TOP VIEW Input Voltage (VIN) ..40V BOOST Pin Voltage ..50V FB 1 6 SHDN BOOST Pin Above SW Pin ...25V GND 2 7 5 VIN SHDN Pin ..40V BOOST 3 4 SW FB Voltage ...6V Operating Temperature Range (Note 2) DCB PACKAGE 6-LEAD (2mm s 3mm) PLASTIC DFN LT3493E .. –40°C to 85°C TJMAX = 125°C, θJA = 64°C/W LT3493I ... –40°C to 125°C EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB Maximum Junction Temperature .. 125°C Storage Temperature Range ... –65°C to 150°C
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3493EDCB#PBF LT3493EDCB#TRPBF LCGG 6-Lead (2mm × 3mm) Plastic DFN –40°C to 85°C LT3493IDCB#PBF LT3493IDCB#TRPBF LCGH 6-Lead (2mm × 3mm) Plastic DFN –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3493EDCB LT3493EDCB#TR LCGG 6-Lead (2mm × 3mm) Plastic DFN –40°C to 85°C LT3493IDCB LT3493IDCB#TR LCGH 6-Lead (2mm × 3mm) Plastic DFN –40°C to 125°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/ 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, VBOOST = 17V, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Range 3.6 36 V Undervoltage Lockout 3.1 3.4 3.6 V Feedback Voltage l 765 780 795 mV FB Pin Bias Current VFB = Measured VREF + 10mV (Note 4) l 50 150 nA Quiescent Current Not Switching 1.9 2.5 mA Quiescent Current in Shutdown VSHDN = 0V 0.01 2 μA Reference Line Regulation VIN = 5V to 36V 0.007 %/V Switching Frequency VFB = 0.7V 685 750 815 kHz VFB = 0V 36 kHz Maximum Duty Cycle l 88 95 % TA = 25°C 91 95 % 3493fb 2