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LM3691TL-2.5 数据表(PDF) 6 Page - Texas Instruments |
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LM3691TL-2.5 数据表(HTML) 6 Page - Texas Instruments |
6 / 29 page LM3691 SNVS506J – MAY 2008 – REVISED DECEMBER 2015 www.ti.com 7.5 Electrical Characteristics Unless otherwise specified, specifications apply to the LM3691 open-loop Typical Application Circuit with VIN = EN = 3.6 V; typical limits are for TA = 25°C and minimum and maximum limits apply over the operating ambient temperature range (−30°C ≤ TA = TJ ≤ +85°C). (1) (2) (3) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PWM mode –1% 1% no load VOUT = 1.1 V to 3.3 V VFB Feedback voltage PWM mode –10 10 mV no load VOUT = 0.75 V to 1 V ISHDN Shutdown supply current EN = 0 V 0.03 1 µA IQ_ECO ECO mode IQ ECO mode 64 80 µA IQ_PWM PWM mode IQ PWM mode 490 600 µA RDSON (P) Pin-pin resistance for PFET VIN = VGS = 3.6 V, IO = 200 mA 160 250 m Ω RDSON (N) Pin-pin resistance for NFET VIN = VGS = 3.6 V, IO = −200 mA 115 180 m Ω ILIM Switch peak current limit Open loop 1250 1500 1700 mA VIH Logic high input 1.2 V VIL Logic low input 0.4 V IEN,MODE Input current 0.01 1 µA FSW Switching frequency PWM mode 3.6 4 4.4 MHz VIN rising, TA = 25°C 2.2 2.29 V VON UVLO threshold(4) VIN falling 2.1 V TSTARTUP Start time(5) TA = 25°C 70 145 300 µs (1) All voltages are with respect to the potential at the GND pin. (2) Minimum and maximum limits are specified by design, test or statistical analysis. Typical numbers represent the most likely norm. (3) The parameters in the electrical characteristic table are tested under open-loop conditions at VIN = 3.6 V unless otherwise specified. For performance over the input voltage range and closed loop condition, refer to the datasheet curves. (4) The UVLO rising threshold minus the falling threshold is always positive. (5) Specified by design. Not production tested. 6 Submit Documentation Feedback Copyright © 2008–2015, Texas Instruments Incorporated Product Folder Links: LM3691 |
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