BL8021
1.2A 1.5MHz 7V Synchronous Buck Converter
DESCRIPTION
The BL8021 is a high-efficiency, DC-to-DC stepdown switch...
BL8021
1.2A 1.5MHz 7V Synchronous Buck Converter
DESCRIPTION
The BL8021 is a high-efficiency, DC-to-DC stepdown switching
regulators, capable of delivering up to 1.2A of output current. The device operates from an input voltage range of 2.6V to 7.0V and provides an output voltage from 0.6V to VIN, making the BL8021 ideal for low voltage power conversions. Running at a fixed frequency of 1.5MHz allows the use of small external components, such as ceramic input and output caps, as well as small inductors, while still providing low output ripples. This low noise output along with its excellent efficiency achieved by the internal synchronous rectifier, making BL8021 an ideal green replacement for large power consuming linear
regulators. Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protection improves design reliability.
BL8021 is housed in a SOT23-5 Package
FEATURES
High Efficiency: Up to 96% Capable of Delivering 1.2A 1.5MHz Switching Frequency No External
Schottky Diode Needed Low dropout 100% Duty operation Internal Compensation and Soft-Start Current Mode control 0.6V Reference for Low Output voltages Logic Control Shutdown (IQ<1uA) Thermal shutdown and UVLO Available in SOT23-5
APPLICATIONS
Cellular phones Digital Cameras MP3 and MP4 players Set top boxes Wireless and DSL Modems USB supplied Devices in Notebooks Portable Devices
TYPICAL APPLICATION
VIN 2.6V to 7V
10uF
IN SW
BLLC8304...