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RT8074 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8074 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 10 page  RT8074 ® DS8074-07 November 2012 www.richtek.com 1 © Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. Applications LCD TV and Monitor Notebook Computers Distributed Power Systems IP Phones Digital Cameras General Description The RT8074 is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.7V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V 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 default switching frequency is set at 2MHz, if the RT pin is left open. It can also be varied from 200kHz to 2MHz by adding an external resistor. Current mode operation with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors. Ordering Information 4A, 2MHz, Synchronous Step-Down Converter 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% Adjustable Frequency : 200kHz to 2MHz No Schottky Diode Required 0.8V Reference Allows Low Output Voltage Low Dropout Operation : 100% Duty Cycle Enable Function Internal Soft-Start RoHS Compliant and Halogen Free Pin Configurations (TOP VIEW) SOP-8 (Exposed Pad) COMP GND EN VIN FB RT LX LX GND 2 3 4 5 6 7 8 9 Typical Application Circuit Note : Using all Ceramic Capacitors 3 EN VIN 4 RT8074 VIN 2.7V to 5.5V RT 7 LX 5, 6 COMP FB 8 1 GND 2, 9 (Exposed Pad) ROSC L 1.5µH COUT 22µF RCOMP 10k VOUT CIN 10µF CCOMP 560pF 750 2k R1 R2 1.1V Package Type SP : SOP-8 (Exposed Pad-Option 2) RT8074 Lead Plating System G : Green (Halogen Free and Pb Free) |
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Similar Description - RT8074 |
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