Datasheet LT3493-3 (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 AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order … |
| 文件格式/大小 | PDF / 391 Kb |
| 文件语言 | 英语 |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order Options. ELECTRICAL CHARACTERISTICS. The
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LT3493-3
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Voltage (VIN) .. 40V TOP VIEW BOOST Pin Voltage .. 50V FB 1 6 SHDN BOOST Pin Above SW Pin ... 25V GND 2 7 5 V SHDN Pin .. 40V IN FB Voltage ... 6V BOOST 3 4 SW Operating Temperature Range (Note 2) DCB PACKAGE LT3493E-3 ... –40°C to 85°C 6-LEAD (2mm × 3mm) PLASTIC DFN Maximum Junction Temperature .. 125°C TJMAX = 125°C, θJA = 64°C/ W EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB Storage Temperature Range ... – 65°C to 150°C ORDER PART NUMBER DCB PART MARKING LT3493EDCB-3 LCGJ
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 12V, VBOOST = 17V, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Range 6.8 36 V Undervoltage Lockout 6.2 6.5 6.8 V Feedback Voltage ● 765 780 795 mV FB Pin Bias Current VFB = Measured VREF (Note 4) ● 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 = 6.8V to 36V 0.007 %/V Switching Frequency VFB = 0.7V 685 750 815 kHz VFB = 0V 36 kHz Maximum Duty Cycle ● 88 95 % TA = 25°C 91 95 % 3493-3f 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
Input Voltage (VIN) .. 40V TOP VIEW BOOST Pin Voltage .. 50V FB 1 6 SHDN BOOST Pin Above SW Pin ... 25V GND 2 7 5 V SHDN Pin .. 40V IN FB Voltage ... 6V BOOST 3 4 SW Operating Temperature Range (Note 2) DCB PACKAGE LT3493E-3 ... –40°C to 85°C 6-LEAD (2mm × 3mm) PLASTIC DFN Maximum Junction Temperature .. 125°C TJMAX = 125°C, θJA = 64°C/ W EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB Storage Temperature Range ... – 65°C to 150°C ORDER PART NUMBER DCB PART MARKING LT3493EDCB-3 LCGJ
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 12V, VBOOST = 17V, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Range 6.8 36 V Undervoltage Lockout 6.2 6.5 6.8 V Feedback Voltage ● 765 780 795 mV FB Pin Bias Current VFB = Measured VREF (Note 4) ● 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 = 6.8V to 36V 0.007 %/V Switching Frequency VFB = 0.7V 685 750 815 kHz VFB = 0V 36 kHz Maximum Duty Cycle ● 88 95 % TA = 25°C 91 95 % 3493-3f 2