Date: 30/01/2009

2.5MHz, 1A synchronous step down Regulator

Semtech's SC4626 is a high efficiency, synchronous step-down regulator providing up to 1A output current in a SOT23-5 package. The device requires only three external filter components for a complete step-down regulator solution.

Technical specifications and features of this device are,

1. Input voltage range: 2.9 - 5.5V
2. Output voltage: 1.0 - 3.3V
3. Output Current of 1Amp
4. 2.5MHz Switching Frequency
5. Efficiency Up to 93%
6. Low Output Noise Across Load Range
7. Start Up into Pre-Bias Output
8. 100% Duty-Cycle Low Dropout Operation
9. <1µA Shutdown Current
10. Internal Soft Start
11. Input Under-Voltage Lockout
12. Output Over-Voltage, Current Limit Protection
13. Over-Temperature Protection
14. SOT23-5 Package
15. -40 to 85°C Temperature Range
16. Fully WEEE and RoHS Compliant


Applications areas for this IC are Bluetooth Radios, DSC and PMPs, GPS Devices, xDSL Systems, POL Regulators, Portable HDD and Wireless LAN.