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RT8030 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT8030 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 11 page  RT8030 1 DS8030-02 March 2011 www.richtek.com Applications Portable Instruments Battery-Powered Equipment Notebook Computers Distributed Power Systems IP Phones Digital Cameras General Description The RT8030 is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.6V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering output current up to 1A. The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. 100% duty cycle provides low dropout operation extending battery life in portable systems. Current mode operation with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors. RT8030 operation in forced continuous PWM Mode which minimizes ripple voltage and reduces the noise and RF interference. 100% duty cycle in Low Dropout Operation further maximize battery life. 1A, 2.2MHz, Synchronous Step-Down Regulator Features High Efficiency : Up to 95% Low RDS(ON) Internal Switches : 160m Ω Ω Ω Ω Ω Programmable Frequency : 300kHz to 2.5MHz No Schottky Diode Required 0.8V Reference Allows Low Output Voltage Forced Continuous Mode Operation Low Dropout Operation : 100% Duty Cycle RoHS Compliant and Halogen Free Typical Application Circuit Note : Using all Ceramic Capacitors Pin Configurations (TOP VIEW) SOP-8 COMP SHDN/RT GND PGND LX PVDD FB VDD 2 3 4 5 8 7 6 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. 6 VDD PVDD 5 RT8030 VIN 2.6V to 5.5V 4 PGND SHDN/RT 1 LX 3 COMP FB 7 8 GND 2 ROSC 137k CIN 10µF x 2 L1 2.2µH R1 210k R2 240k COUT 10µF x 2 RCOMP 13k CCOMP 1nF VOUT 1.5V/1A Package Type S : SOP-8 RT8030 Lead Plating System G : Green (Halogen Free and Pb Free) |
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