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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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RT4531WSC 데이터시트(PDF) 4 Page - Richtek Technology Corporation |
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RT4531WSC 데이터시트(HTML) 4 Page - Richtek Technology Corporation |
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4 / 14 page  4 RT4531 www.richtek.com DS4531-01 July 2016 © Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Electrical Characteristics Recommended Operating Conditions (Note 4) Supply Input Voltage, VIN ------------------------------------------------------------------------------------------------ 2.5V to 5.5V Junction Temperature Range -------------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range -------------------------------------------------------------------------------------------- −40°C to 85°C (VIN = 3.6V, CIN = 2.2 μF, COUT = 1μF, L = 4.7μH, TA = 25°C, unless otherwise specified) Absolute Maximum Ratings (Note 1) Supply Voltage, VIN ------------------------------------------------------------------------------------------------------- −0.3V to 6V LED Switching Voltage, SW -------------------------------------------------------------------------------------------- 38V LED Current Source Voltage, IFB1, IFB2 ---------------------------------------------------------------------------- −0.3V to 6V Digital Clock Control Pin, EN, PWM --------------------------------------------------------------------------------- −0.3V to 6V Other Pins, ISET ---------------------------------------------------------------------------------------------------------- −0.3V to 6V Power Dissipation, PD @ TA = 25 °C WL-CSP-9B 1.35x1.35 (BSC) ------------------------------------------------------------------------------------------ 1.22W Package Thermal Resistance (Note 2) WL-CSP-9B 1.35x1.35 (BSC), θJA ------------------------------------------------------------------------------------ 81.5°C/W Junction Temperature ----------------------------------------------------------------------------------------------------- 150 °C Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260 °C Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C ESD Susceptibility (Note 3) HBM (Human Body Model) ---------------------------------------------------------------------------------------------- 2kV MM (Machine Model) ----------------------------------------------------------------------------------------------------- 200V Parameter Symbol Test Conditions Min Typ Max Unit Power Supply UVLO VUVLO VIN falls -- 2.2 2.3 V UVLO Hysteresis Voltage VUVLO VIN rises after UVLO 30 50 200 mV VIN Supply Current IQ EN = High, Non-switching -- 1.2 -- mA VIN Shutdown Current ISHDN VIN = 5V -- 1 -- A Thermal Shutdown TSD -- 150 -- C Thermal Shutdown Hysteresis -- 15 -- C Back Light LED Accuracy of Back Light Output Current 1/2 AIBL1, 2 IFBx = 20mA 2 -- 2 % Matching of Output Current MIBL IFBx = 20mA -- 1 2 % IFBx = 500A -- 1 -- % BLED Sense Voltage 1/2 VDSBL IFBx = 20mA, measured on IFBx pin which has a lower voltage. 200 300 430 mV Back Light Switching Frequency fblosc 0.88 1 1.12 MHz |
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