Datasheet LT3462, LT3462A (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | Inverting 1.2MHz/2.7MHz DC/DC Converters with Integrated Schottky |
| 页数 / 页 | 12 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| 修订版 | A |
| 文件格式/大小 | PDF / 480 Kb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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LT3462/LT3462A
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 3V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 2.5 V Maximum Operating Voltage 16 V SDREF Voltage 10µA > ISDREF ≥ –80µA ● 1.245 1.265 1.285 V FB Pin Bias Current (Note 2) 15 50 nA SDREF Minus FB Voltage 10µA > ISDREF ≥ –80µA ● 1.235 1.263 1.285 V Error Amp Offset Voltage –12 12 mV SDREF Reference Source Current SDREF >1.2V ● 120 180 µA Supply Current FB = –0.05V, Not Switching 2.9 3.6 mA SDREF = 0V, FB = Open, VIN = 5V 6.5 10 µA SDREF Line Regulation 0.007 %/V Switching Frequency (LT3462) ● 0.8 1.2 1.6 MHz Switching Frequency (LT3462A) ● 2.0 2.7 3.5 MHz Maximum Duty Cycle (LT3462) ● 90 % Maximum Duty Cycle (LT3462A) ● 77 % Switch Current Limit 300 420 mA Switch VCESAT ISW = 250mA 270 350 mV Switch Leakage Current VSW = 5V 0.01 1 µA Rectifier Leakage Current VD = –40V 0.03 4 µA Rectifier Forward Drop ISCHOTTKY = 250mA 800 1100 mV SDREF Voltage Low ● 0.20 V SDREF Off‑State Pull‑Up Current 1 2 3 µA SDREF Turn‑Off Current –300 –200 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The LT3462E is guaranteed to meet specifications from 0°C to may cause permanent damage to the device. Exposure to any Absolute 70°C. Specifications over the –40°C to 85°C operating temperature range Maximum Rating condition for extended periods may affect device are assured by design, characterization and correlation with statistical reliability and lifetime. process controls.
Note 2:
Current flows out of the pin. Rev A For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 3V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 2.5 V Maximum Operating Voltage 16 V SDREF Voltage 10µA > ISDREF ≥ –80µA ● 1.245 1.265 1.285 V FB Pin Bias Current (Note 2) 15 50 nA SDREF Minus FB Voltage 10µA > ISDREF ≥ –80µA ● 1.235 1.263 1.285 V Error Amp Offset Voltage –12 12 mV SDREF Reference Source Current SDREF >1.2V ● 120 180 µA Supply Current FB = –0.05V, Not Switching 2.9 3.6 mA SDREF = 0V, FB = Open, VIN = 5V 6.5 10 µA SDREF Line Regulation 0.007 %/V Switching Frequency (LT3462) ● 0.8 1.2 1.6 MHz Switching Frequency (LT3462A) ● 2.0 2.7 3.5 MHz Maximum Duty Cycle (LT3462) ● 90 % Maximum Duty Cycle (LT3462A) ● 77 % Switch Current Limit 300 420 mA Switch VCESAT ISW = 250mA 270 350 mV Switch Leakage Current VSW = 5V 0.01 1 µA Rectifier Leakage Current VD = –40V 0.03 4 µA Rectifier Forward Drop ISCHOTTKY = 250mA 800 1100 mV SDREF Voltage Low ● 0.20 V SDREF Off‑State Pull‑Up Current 1 2 3 µA SDREF Turn‑Off Current –300 –200 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The LT3462E is guaranteed to meet specifications from 0°C to may cause permanent damage to the device. Exposure to any Absolute 70°C. Specifications over the –40°C to 85°C operating temperature range Maximum Rating condition for extended periods may affect device are assured by design, characterization and correlation with statistical reliability and lifetime. process controls.
Note 2:
Current flows out of the pin. Rev A For more information www.analog.com 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts