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RT8078A Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8078A Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 12 page  RT8078A 1 DS8078A-01 June 2011 www.richtek.com Applications Portable Instruments Battery Powered Equipment Notebook Computers Distributed Power Systems IP Phones Digital Cameras Pin Configurations (TOP VIEW) WDFN-10L 3x3 4A, 1MHz, Synchronous Step-Down Converter General Description The RT8078A is a high efficiency synchronous, step-down DC/DC converter. It's input voltage range from 2.7V to 5.5V that provides an adjustable regulated output voltage from 0.6V to VIN while delivering up to 4A of output current. The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The switching frequency is fixed internally at 1MHz. The 100% duty cycle provides low dropout operation, hence extending battery life in portable systems. Current mode operation with internal compensation allows the transient response to be optimized over a wide range of loads and output capacitors. The RT8078A is operated in PWM mode to achieve high efficiency for a wide load range. The RT8078A is available in WDFN-10L 3x3 and SOP-8 (Exposed Pad) packages. Ordering Information Note : Richtek 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. Features High Efficiency : Up to 95% Fixed Frequency : 1MHz No Schottky Diode Required Internal Compensation 0.6V Reference Allows Low Output Voltage PWM Mode Operation Low Dropout Operation : 100% Duty Cycle OCP, UVP, OVP, OTP RoHS Compliant and Halogen Free SOP-8 (Exposed Pad) 9 8 7 1 2 3 4 5 10 6 11 LX PGOOD LX EN LX PVIN NC PVIN SVIN FB LX LX PGOOD EN PVIN PVIN FB SVIN GND 2 3 4 5 6 7 8 9 Package Type QW : WDFN-10L 3x3 (W-Type) SP : SOP-8 (Exposed Pad-Option 2) RT8078A Lead Plating System G : Green (Halogen Free and Pb Free) Z : ECO (Ecological Element with Halogen Free and Pb free) |
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