Datasheet LT1611 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | Inverting 1.4MHz Switching Regulator in 5-Lead SOT-23 |
| 页数 / 页 | 12 / 2 — ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). ELECTRICAL … |
| 文件格式/大小 | PDF / 271 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). ELECTRICAL CHARACTERISTICS The
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文件文字版本
LT1611
W W W U U W U ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
ORDER PART VIN Voltage .. 10V TOP VIEW NUMBER SW Voltage ..– 0.4V to 36V SW 1 5 VIN NFB Voltage ... – 3V LT1611CS5 GND 2 Current into NFB Pin ... ±1mA NFB 3 4 SHDN SHDN Voltage .. 10V S5 PACKAGE Maximum Junction Temperature .. 125°C S5 PART MARKING 5-LEAD PLASTIC SOT-23 Operating Temperature Range LTES TJMAX = 125°C, θJA = 256°C/W Commercial ... 0°C to 70°C Extended Commercial (Note 2) ... – 40°C to 85°C Storage Temperature Range ... – 65°C to 150°C Consult factory for Industrial and Military grade parts. Lead Temperature (Soldering, 10 sec).. 300°C
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 1.5V, VSHDN = VIN unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 0.9 1.1 V Maximum Operating Voltage 10 V NFB Pin Bias Current VNFB = –1.23V ● – 2.7 – 4.7 – 6.7 µA Feedback Voltage ● – 1.205 – 1.23 – 1.255 V Quiescent Current VSHDN = 1.5V, Not Switching 3 4.5 mA Quiescent Current in Shutdown VSHDN = 0V, VIN = 2V 0.01 0.5 µA VSHDN = 0V, VIN = 5V 0.01 1.0 µA Reference Line Regulation 1.5V ≤ VIN ≤ 10V 0.02 0.2 %/V Switching Frequency ● 1.0 1.4 1.8 MHz Maximum Duty Cycle ● 82 86 % Switch Current Limit (Note 3) 550 800 mA Switch VCESAT ISW = 300mA 300 350 mV Switch Leakage Current VSW = 5V 0.01 1 µA SHDN Input Voltage High 1 V SHDN Input Voltage Low 0.3 V SHDN Pin Bias Current VSHDN = 3V 25 50 µA VSHDN = 0V 0 0.1 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 3:
Current limit guaranteed by design and/or correlation to static test. of a device may be impaired. Slope compensation reduces current limit at higher duty cycle.
Note 2:
C grade device specifications are guaranteed over the 0°C to 70°C temperature range. In addition, C grade device specifications are assured over the – 40°C to 85°C temperature range by design or correlation, but are not production tested. 2
W W W U U W U ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
ORDER PART VIN Voltage .. 10V TOP VIEW NUMBER SW Voltage ..– 0.4V to 36V SW 1 5 VIN NFB Voltage ... – 3V LT1611CS5 GND 2 Current into NFB Pin ... ±1mA NFB 3 4 SHDN SHDN Voltage .. 10V S5 PACKAGE Maximum Junction Temperature .. 125°C S5 PART MARKING 5-LEAD PLASTIC SOT-23 Operating Temperature Range LTES TJMAX = 125°C, θJA = 256°C/W Commercial ... 0°C to 70°C Extended Commercial (Note 2) ... – 40°C to 85°C Storage Temperature Range ... – 65°C to 150°C Consult factory for Industrial and Military grade parts. Lead Temperature (Soldering, 10 sec).. 300°C
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 1.5V, VSHDN = VIN unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 0.9 1.1 V Maximum Operating Voltage 10 V NFB Pin Bias Current VNFB = –1.23V ● – 2.7 – 4.7 – 6.7 µA Feedback Voltage ● – 1.205 – 1.23 – 1.255 V Quiescent Current VSHDN = 1.5V, Not Switching 3 4.5 mA Quiescent Current in Shutdown VSHDN = 0V, VIN = 2V 0.01 0.5 µA VSHDN = 0V, VIN = 5V 0.01 1.0 µA Reference Line Regulation 1.5V ≤ VIN ≤ 10V 0.02 0.2 %/V Switching Frequency ● 1.0 1.4 1.8 MHz Maximum Duty Cycle ● 82 86 % Switch Current Limit (Note 3) 550 800 mA Switch VCESAT ISW = 300mA 300 350 mV Switch Leakage Current VSW = 5V 0.01 1 µA SHDN Input Voltage High 1 V SHDN Input Voltage Low 0.3 V SHDN Pin Bias Current VSHDN = 3V 25 50 µA VSHDN = 0V 0 0.1 µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
Note 3:
Current limit guaranteed by design and/or correlation to static test. of a device may be impaired. Slope compensation reduces current limit at higher duty cycle.
Note 2:
C grade device specifications are guaranteed over the 0°C to 70°C temperature range. In addition, C grade device specifications are assured over the – 40°C to 85°C temperature range by design or correlation, but are not production tested. 2