전자부품 데이터시트 검색엔진 |
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LM3477AMM 데이터시트(PDF) 3 Page - National Semiconductor (TI) |
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LM3477AMM 데이터시트(HTML) 3 Page - National Semiconductor (TI) |
3 / 23 page Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage 36V Peak Driver Output Current (<10µs) 1.0A CB Pin Voltage (Note 2) 43V I SEN Pin Voltage 500mV Power Dissipation Internally Limited Storage Temperature Range −65˚C to +150˚C Junction Temperature +150˚C ESD Susceptibilty (Note 3) Human Body Model Machine Model 2kV 200V Lead Temperature for MSOP Package Vapor Phase (60 sec.) Infared (15 sec.) 215˚C 220˚C Operating Ratings (Note 1) Supply Voltage 2.97V ≤ V IN ≤ 35V Junction Temperature Range −40˚C ≤ T J ≤ +125˚C Electrical Characteristics (Note 4) Specifications in Standard type face are for T J = 25˚C, and in bold type face apply over the full Operating Temperature Range. Unless otherwise specified, V IN = 12V. Symbol Parameter Conditions Typical Limit Units V FB Feedback Voltage V COMP = 1.4V, 2.97V ≤ V IN ≤ 36V 1.270 1.260/1.252 1.288/1.290 V V(min) V(max) ∆V LINE Feedback Voltage Line Regulation 2.97V ≤ V IN ≤ 36V 0.001 %/V ∆V LOAD Output Voltage Load Regulation ±0.5 %/V (max) V UVLO Input Undervoltage Lock-out 2.87 2.97 V V(max) V UV(HYS) Input Undervoltage Lock-out Hysteresis 180 130 225 mV mV (min) mV (max) F SW Switching Frequency 500 435 575 kHz kHz(min) kHz(max) R DS1 (ON) Driver Switch On Resistance (top) I DR = 0.2A, VIN=5V 7 Ω R DS2 (ON) Driver Switch On Resistance (bottom) I DR = 0.2A 4 Ω (V CB−VSW)max Maximum Boot Voltage V IN < 7.2V V IN V V IN ≥ 7.2V 7.2 D max Maximum Duty Cycle 93 88 % %(min) T min (on) Minimum On Time 330 230 495 nsec nsec(min) nsec(max) I SUPPLY Supply Current (switching) (Note 5) 2.0 3.0 mA mA (max) I Q Quiescent Current in Shutdown Mode (Note 6), V IN =5V 5 8 µA µA (max) www.national.com 3 |
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