器件名称: ACT6391
功能描述: 1.7A/2.5A PWM Step-Up DC/DC Converters In MSOP
文件大小: 1021.83KB 共11页
简 介:ACT6390/ACT6391
Rev PrA, 01-Sep-07 Advanced Product Information – All Information Subject to Change
1.7A/2.5A PWM Step-Up DC/DC Converters In MSOP FEATURES
Greater than 90% Efficiency Adjustable Output Voltage Up to 12V Internal 14V Power MOSFET Two Peak Current Options: ACT6390: 1.7A, 0.2Ω ACT6391: 2.5A, 0.15Ω Selectable 700kHz/1.3MHz Frequency Integrated Over-Voltage Protection (OVP) Programmable Soft-Start Function Thermal Shutdown Cycle-by-Cycle Over-Current Protection Small MSOP-8 Package
GENERAL DESCRIPTION
The ACT6390/ACT6391 are high-performance, fixed-frequency, current-mode PWM step-up DC/DC converters that incorporate internal power MOSFETs. The ACT6390 includes an integrated 0.2Ω power MOSFET that supports peak currents of up to 1.7A, while the ACT6391’s integrated 0.15Ω power MOSFET supports currents of up to 2.5A. The ACT6390 and ACT6391 both utilize simple external loop compensation and a pin-selectable fixed-frequency of either 700kHz or 1.3MHz, allowing optimization between component size, cost, and AC performance across a wide range of applications. Additional functions include an externally programmable soft-start function for easy inrush current control, internal over-voltage protection (OVP), cycle-by-cycle current limit protection, and thermal shutdown. Both the ACT6390 and the ACT6391 are available in the small 8-pin MSOP-8 package.
APPLICATIONS
TFT LCD Monitors Battery-Powered Equipment Set-Top Boxes DSL and Cable Modems and Routers
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