Active-Semi ACT6391
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. Both the ACT6390 and the ACT6391 are available in the small 8-pin MSOP-8 package.| Part No. | ACT6391 |
|---|---|
| Datasheet | ACT6391 Download |
| Manufacturer |  Active-Semi |
| Description | 1.7A/2.5A PWM Step-Up DC/DC Converters |
| Buy | Stock & Price |
FEATURES
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● Greater than 90% Efficiency Adjustable Output Voltage Up to 12V Internal 14V Power MOSFET Two Peak Current Options:
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 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. − ACT6390: 1.7A, 0.2Ω − ACT6391: 2.5A, 0.15Ω● Selectable 700kHz/1.3MHz Frequency
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● Integrated Over-Voltage Protection (OVP) Programmable Soft-Start Function Thermal Shutdown Cycle-by-Cycle Over-Current Protection Small MSOP-8 Package
APPLICATIONS
TFT LCD Monitors Battery-Powered Equipment Set-Top Boxes DSL and Cable Modems and Routers SIMPLIFIED APPLICATION CIRCUIT VIN 2.7V to 5.5V IN ON OFF 1.3MHz 700kHz EN ACT6390 ACT6391 SW R1 FB G R2 VOUT FREQ SS COMP Innovative PowerTM -1- Copyright © 2008 Active-Semi, Inc.
