BQ8211 PDF – Low Dropout 300mA Voltage Regulator

Part Number: BQ8211

Function: Low Dropout 300mA Voltage Regulator

Package: SOT-23 Type

Manufacturer: Acutechnology Semiconductor


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BQ8211 image


The BQ8211 is a low dropout voltage regulator capable of delivering 300 mA to the load. It is adjustable and can set a precise voltage from 1.175V to 15V with two external resistors. The BQ8211 meets all specifications down to 1.175V output, unlike CMOS LDO’s which loose performance with outputs below 2.25V. The enable pin provides a remote turn-off for low power consumption. It draws virtually zero current while in shutdown mode. To assure accuracy within 2% over temperature, the heart of the BQ8211 is a self-correcting AcuRef™ bandgap reference. On-chip current limit and thermal shutdown with hysteresis protects against any combination of overload and ambient temperature that might cause the junction temperature to exceed safe limits.


• Graphic cards and PC motherboards • Cell Phones • DVD video player


• Low dropout voltage (980mV at 300 mA) • Enable pin implements sequencing • Vout tolerance less than 2 % over temperature Featured in the very small SOT-23 package Stable with low cost 1µF capacitor Low ground current Thermal protection with hysteresis Short circuit protection RoHS compliant available Typical Application BQ8211 Acutechnology Semiconductor Inc. BQ8211 Pin Configuration Pin Descriptions Pin Name VIN Ground ENABLE Adjust VOUT Function + Unregulated Input Voltage, Collector of Pass Transistor – Ground Active high, ENABLE > 1 V OFF low, ENABLE < 0.25V Adjust input. Connect to resistive feed back divider. Regulated Output Functional Block Diagram 2 Rev.  […]

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BQ8211 Datasheet