1 Features

? High-efficiency, 1.5-MHz, synchronous switching

mode buck charger for single cell battery

– >90 efficiency down to 25-mA charge current

from 5-V input

– Charge termination from 10 mA to 620 mA, 10-

mA steps

– Flexible JEITA profile for safe charging over

temperature

? BATFET control to support shutdown, ship mode

and full system reset

– 1.5-μA quiescent current in battery only mode

– 0.15-μA battery leakage current in ship mode

– 0.1-μA battery leakage current in shutdown

? Supports USB On-The-Go (OTG)

– Boost mode operation supporting 3.84-V to 9.6-

V output

– >90 boost efficiency down to 100-mA OTG

current for 5-V VBUS

? Supports a wide range of input sources

– 3.9-V to 18-V wide input operating voltage

range with 26-V absolute maximum input

voltage

– Maximizes source power with input voltage

regulation (VINDPM) and input current

regulation (IINDPM)

– VINDPM threshold automatically tracks battery

voltage

? Efficient battery operation with 15-mΩ BATFET

? Narrow VDC (NVDC) power path management

– System instant-on with depleted or no battery

– Battery supplement when adapter is fully

loaded

? Flexible autonomous or I2C-controlled modes

? Integrated 12-Bit ADC for voltage, current,

temperature monitoring

? High accuracy

– ±0.5 charge voltage regulation

– ±5 charge current regulation

– ±5 input current regulation

? Safety

– Thermal regulation and thermal shutdown

– Input, system, battery overvoltage protection

– Battery, converter overcurrent protection

– Charging safety timer

2 Applications

? Tablet

? Gaming and Computer Accessories

? IP Camera, EPOS

? Portable Medical Equipment

3 Description

BQ25620 and BQ25622 are a highly-integrated 3.5-

A switch-mode battery charge management and

system power path management device for single

cell Li-Ion and Li-polymer batteries. The solution is

highly integrated with built-in current sensing, loop

compensation, input reverse-blocking FET (RBFET,

Q1), high-side switching FET (HSFET, Q2), lowside

switching FET (LSFET, Q3), and battery FET

(BATFET, Q4) between system and battery. It uses

narrow VDC power path management, regulating the

system slightly above the battery voltage without

dropping below a configurable minimum system

voltage. The low impedance power path optimizes

switch-mode operation efficiency, reduces battery

charging time, extends battery life during discharging

phase, and the ultra-low 0.15-μA ship mode current

extends battery shelf life. The I2C serial interface with

charging and system settings makes BQ25620 and

BQ25622 truly flexible solutions.

BQ25616屬于開發(fā)板，套件，編程器 > 評估和演示板及套件。美國德州儀器公司制造生產(chǎn)的BQ25616評估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過驗證的實施環(huán)境中評估某些重點器件的性能或特性。評估方法通常有完善的文檔說明，并且視乎具體情況由評估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對于數(shù)量特別多或類別獨特的器件類別(如 ADC、DAC 和開關(guān)模式電源)，評估平臺可組合為一個單獨的產(chǎn)品系列。