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APW8805B

ANPEC
Part Number APW8805B
Manufacturer ANPEC
Description Synchronous Buck Converter
Published Aug 14, 2020
Detailed Description APW8805B 3A 5V 1MHz Synchronous Buck Converter Features General Description • High Efficiency up to 95% APW8805B is...
Datasheet PDF File APW8805B PDF File

APW8805B
APW8805B

Overview
APW8805B 3A 5V 1MHz Synchronous Buck Converter Features General Description • High Efficiency up to 95% APW8805B is a 3A synchronous buck converter with inte- • Adjustable Output Voltage from 0.
6V to VVIN grated 75mΩ high side and 55mΩ low side power • Integrated 75mΩ High Side / 55mΩ Low Side MOSFETs.
The APW8805B, design with a current-mode MOSFETs control scheme, can convert wide input voltage of 2.
6V to • Low Dropout Operation: 100% Duty Cycle • Mode Selection - APW8805B : PFM/PWM mode • Stable with Low ESR Ceramic Capacitors • Power-On-Reset Detection on VCC and VIN 6V to the output voltage adjustable from 0.
6V to 6V to provide excellent output voltage regulation.
The APW8805B is equipped with an automatic PFM/PWM mode operation.
At light load , the IC operates in the PFM mode to reduce the switching losses.
At heavy load, the IC works in PWM mode.
At PWM mode, the switching • Integrated Soft-Start and Soft-Stop and Pre-bias frequency is set by the external resistor.
Startup The APW8805B is also equipped with Power-on-reset, • Over-Temperature Protection soft-start, soft-stop, Pre-bias startup and whole protec- • Over-Voltage Protection tions (under-voltage, over-voltage, over-temperature and • Under-Voltage Protection • High/ Low Side Current Limit • Power Good Indication current-limit) into a single package.
This device, available TDFN3x3-10, provides a very compact system solution external components and PCB area.
• Enable/Shutdown Function • Current-Mode Operation with Internal Compensation • Small TDFN3x3-10 Packages • Lead Free and Green Devices Available (RoHS Compliant) Simplified Application Circuit Applications • Notebook Computer & UMPC • LCD Monitor/TV • Set-Top Box • DSL, Switch HUB • Portable Instrument VIN ON OFF VIN SW VCC FB APW8805B POK GND EN (option) VOUT ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version...


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