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RT8020 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8020 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 14 page  RT8020 1 DS8020-03 August 2007 www.richtek.com Applications l Mobile Phones l Personal Information Appliances l Wireless and DSL Modems l MP3 Players l Portable Instruments Note : Richtek Pb-free and Green products are : }RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. }Suitable for use in SnPb or Pb-free soldering processes. }100% matte tin (Sn) plating. Ordering Information Pin Configurations (TOP VIEW) WDFN-12L 3x3 Dual High-Efficiency PWM Step-Down DC-DC Converter Features l +2.5V to +5.5V Input Range l Adjustable Output From 0.6V to VIN l 1.2V, 1.3V, 1.8V, 2.5V and 3.3V Fixed/ Adjustable Output Voltage l 1A Output Current l 95% Efficiency l No Schottky Diode Required l 50uA Quiescent Current per Channel l 1.5MHz Fixed-Frequency PWM Operation l Small 12-Lead WDFN Package l RoHS Compliant and 100% Lead (Pb)-Free Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area, otherwise visit our website for detail. General Description The RT8020 is a dual high-efficiency Pulse-Width- Modulated (PWM) step-down DC-DC converter. It is capable of delivering 1A output current over a wide input voltage range from 2.5V to 5.5V, the RT8020 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and other hand- held devices. Two operational modes are available : PWM/Low-Dropout auto-switch and shutdown modes. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical application. The RT8020 enters Low-Dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper PMOS. The RT8020 enter shutdown mode and consumes less than 0.1 µAwhen EN pin is pulled low. The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operation f requency of 1.5MHz. This along wit h sm all WDFN-12L 3x3 package provides small PCB area application. Other features include soft start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection. RT8020 Package Type QW : WDFN-12L 3x3 (W-Type) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) Output Voltage : VOUT1/VOUT2 Default : Adjustable A : 3.3V/1.8V B : 3.3V/1.3V C : 3.3V/1.2V D : 2.5V/1.8V VIN2 LX2 NC1 FB1 EN2 NC2 FB2 LX1 GND GND EN1 VIN1 11 10 9 1 2 3 4 5 12 67 8 GND 13 |
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Similar Description - RT8020 |
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