Datasheet LT1931, LT1931A (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | 1.2MHz/2.2MHz Inverting DC/DC Converters in ThinSOT |
| Pages / Page | 12 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order … |
| File Format / Size | PDF / 459 Kb |
| Document Language | English |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order Options. ELECTRICAL CHARACTERISTICS. The
Model Line for this Datasheet
Text Version of Document
LT1931/LT1931A
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VIN Voltage .. 16V TOP VIEW SW Voltage ..– 0.4V to 36V SW 1 5 VIN NFB Voltage ... – 2V GND 2 Current Into NFB Pin .. ±1mA NFB 3 4 SHDN SHDN Voltage .. 16V S5 PACKAGE Maximum Junction Temperature .. 125°C 5-LEAD PLASTIC TSOT-23 Operating Temperature Range (Note 2) .. – 40°C to 85°C TJMAX = 125°C, θJA = 150°C/ W Storage Temperature Range ... – 65°C to 150°C ORDER PART NUMBER S5 PART MARKING Lead Temperature (Soldering, 10 sec).. 300°C LT1931ES5 LTRA LT1931AES5 LTSP LT1931IS5 LTBZF LT1931AIS5 LTBZG
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 TA = 25
°
C. VIN = 3V, VSHDN = VIN, unless otherwise noted. (Note 2) LT1931 LT1931A PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Minimum Operating Voltage 2.45 2.6 2.45 2.6 V Maximum Operating Voltage 16 16 V Feedback Voltage – 1.275 – 1.255 – 1.235 –1.275 –1.255 –1.235 V ● – 1.280 – 1.230 –1.280 –1.230 V NFB Pin Bias Current VNFB = –1.255V ● 4 8 8 16 µA Quiescent Current VSHDN = 2.4V, Not Switching 4.2 6 5.8 8 mA Quiescent Current in Shutdown VSHDN = 0V, VIN = 3V 0.01 1 0.01 1 µA Reference Line Regulation 2.6V ≤ VIN ≤ 16V 0.01 0.05 0.01 0.05 %/V Switching Frequency 1 1.2 1.4 1.8 2.2 2.6 MHz ● 0.85 1.6 1.6 2.9 MHz Maximum Duty Cycle ● 84 90 75 82 % Switch Current Limit (Note 3) 1 1.2 2 1 1.2 2.5 A Switch VCESAT ISW = 1A 400 600 400 600 mV Switch Leakage Current VSW = 5V 0.01 1 0.01 1 µA SHDN Input Voltage, High 2.4 2.4 V SHDN Input Voltage, Low 0.5 0.5 V SHDN Pin Bias Current VSHDN = 3V 16 32 35 70 µA VSHDN = 0V 0 0.1 0 0.1 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life operating temperature range are assured by design, characterization and of a device may be impaired. correlation with statistical process controls. LT1931I/LT1931AI are
Note 2:
The LT1931E/LT1931AE are guaranteed to meet performance guaranteed over the –40°C to 85°C temperature range. specifications from 0°C to 70°C. Specifications over the – 40°C to 85°C
Note 3:
Current limit guaranteed by design and/or correlation to static test. 1931fa 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VIN Voltage .. 16V TOP VIEW SW Voltage ..– 0.4V to 36V SW 1 5 VIN NFB Voltage ... – 2V GND 2 Current Into NFB Pin .. ±1mA NFB 3 4 SHDN SHDN Voltage .. 16V S5 PACKAGE Maximum Junction Temperature .. 125°C 5-LEAD PLASTIC TSOT-23 Operating Temperature Range (Note 2) .. – 40°C to 85°C TJMAX = 125°C, θJA = 150°C/ W Storage Temperature Range ... – 65°C to 150°C ORDER PART NUMBER S5 PART MARKING Lead Temperature (Soldering, 10 sec).. 300°C LT1931ES5 LTRA LT1931AES5 LTSP LT1931IS5 LTBZF LT1931AIS5 LTBZG
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 TA = 25
°
C. VIN = 3V, VSHDN = VIN, unless otherwise noted. (Note 2) LT1931 LT1931A PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Minimum Operating Voltage 2.45 2.6 2.45 2.6 V Maximum Operating Voltage 16 16 V Feedback Voltage – 1.275 – 1.255 – 1.235 –1.275 –1.255 –1.235 V ● – 1.280 – 1.230 –1.280 –1.230 V NFB Pin Bias Current VNFB = –1.255V ● 4 8 8 16 µA Quiescent Current VSHDN = 2.4V, Not Switching 4.2 6 5.8 8 mA Quiescent Current in Shutdown VSHDN = 0V, VIN = 3V 0.01 1 0.01 1 µA Reference Line Regulation 2.6V ≤ VIN ≤ 16V 0.01 0.05 0.01 0.05 %/V Switching Frequency 1 1.2 1.4 1.8 2.2 2.6 MHz ● 0.85 1.6 1.6 2.9 MHz Maximum Duty Cycle ● 84 90 75 82 % Switch Current Limit (Note 3) 1 1.2 2 1 1.2 2.5 A Switch VCESAT ISW = 1A 400 600 400 600 mV Switch Leakage Current VSW = 5V 0.01 1 0.01 1 µA SHDN Input Voltage, High 2.4 2.4 V SHDN Input Voltage, Low 0.5 0.5 V SHDN Pin Bias Current VSHDN = 3V 16 32 35 70 µA VSHDN = 0V 0 0.1 0 0.1 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life operating temperature range are assured by design, characterization and of a device may be impaired. correlation with statistical process controls. LT1931I/LT1931AI are
Note 2:
The LT1931E/LT1931AE are guaranteed to meet performance guaranteed over the –40°C to 85°C temperature range. specifications from 0°C to 70°C. Specifications over the – 40°C to 85°C
Note 3:
Current limit guaranteed by design and/or correlation to static test. 1931fa 2
