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Product Description

The bq25703A is a synchronous NVDC battery buckboost charge controller, offering low component count, high efficiency solution for space-constraint, multi-chemistry battery charging applications. The NVDC-1 configuration allows the system to be regulated at battery voltage, but not drop below system minimum voltage. The system keeps operating even when the battery is completely discharged or removed. When load power exceeds input source rating, the battery goes into supplement mode and prevents the system from crashing. The bq25703A charges battery from a wide range of input sources including USB adapter, high voltage USB PD sources and traditional adapters.

Product Features

? Charge 1- to 4-Cell Battery From Wide Range of Input Sources

– 3.5-V to 24-V Input Operating Voltage

– Supports USB2.0, USB 3.0, USB 3.1 (Type C), and USB_PD Input Current Settings

– Seamless Transition Between Buck and Boost Operation

– Input Current and Voltage Regulation (IDPM and VDPM) Against Source Overload

? Power/Current Monitor for CPU Throttling

– Comprehensive PROCHOT Profile, IMVP8 Compliant

– Input and Battery Current Monitor

– System Power Monitor, IMVP8 Compliant

? Narrow-VDC (NVDC) Power Path Management

– Instant-On With No Battery or Deeply Discharged Battery

– Battery Supplements System When Adapter is Fully-Loaded

? Power Up USB Port From Battery (USB OTG)

– Output 4.48-V to 20.8-V Compatible With USB PD

– Output Current Limit up to 6.35 A

? 800-kHz or 1.2-MHz Programmable Switching Frequency for 1-μH to 3.3-μH Inductor

? Host Control Interface for Flexible System Configuration

– I2C (bq25703A) Port for Optimal System Performance and Status Reporting

– Hardware Pin to Set Input Current Limit Without EC Control

? Integrated ADC to Monitor Voltage, Current and Power

? High Accuracy Regulation and Monitor

– ±0.5% Charge Voltage Regulation

– ±2% Input/Charge Current Regulation

– ±2% Input/Charge Current Monitor

– ±5% Power Monitor

? Safety

– Thermal Shutdown

– Input, System, Battery Overvoltage Protection

– MOSFET Inductor Overcurrent Protection

? Low Battery Quiescent Current

? Input Current Optimizer (ICO) to Extract Max Input Power

? Charge Any Battery Chemistry: Li+, LiFePO4, NiCd, NiMH, Lead Acid

? Package: 32-Pin 4 × 4 WQFN

Typical applications

? Drones, Bluetooth Speakers, IP Cameras, Detachable, Tablet PCs and Power Bank 

? Industrial and Medical Equipment 

? Portable Equipment With Rechargeable Batteries

Actual product photos

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Official Certificate&Certificate

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