ZHCSHF5A May 2017 – January 2018
PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 修訂歷史記錄
- 5 說明 （續(xù)）
- 6 Device Comparison Table
- 7 Pin Configuration and Functions
- 8 Specifications
-
9 Detailed Description
- 9.1 Overview
- 9.2 Functional Block Diagram
- 9.3
Feature Description
- 9.3.1 Ship Mode
- 9.3.2 High Impedance Mode
- 9.3.3 Active Battery Only Connected
- 9.3.4 Voltage Based Battery Monitor
- 9.3.5 Sleep Mode
- 9.3.6 Input Voltage Based Dynamic Power Management (VIN(DPM))
- 9.3.7 Input Overvoltage Protection and Undervoltage Status Indication
- 9.3.8 Battery Charging Process and Charge Profile
- 9.3.9 Dynamic Power Path Management Mode
- 9.3.10 Battery Supplement Mode
- 9.3.11 Default Mode
- 9.3.12 Termination and Pre-Charge Current Programming by External Components (IPRETERM)
- 9.3.13 Input Current Limit Programming by External Components (ILIM)
- 9.3.14 Charge Current Programming by External Components (ISET)
- 9.3.15 Safety Timer and Watchdog Timer
- 9.3.16 External NTC Monitoring (TS)
- 9.3.17 Thermal Protection
- 9.3.18 Typical Application Power Dissipation
- 9.3.19 Status Indicators (PG and INT)
- 9.3.20 Chip Disable (CD)
- 9.3.21 Buck (PWM) Output
- 9.3.22 Load Switch / LDO Output and Control
- 9.3.23 Manual Reset Timer and Reset Output (MR and RESET)
- 9.4 Device Functional Modes
- 9.5 Programming
- 9.6
Register Maps
- 9.6.1 Status and Ship Mode Control Register
- 9.6.2 Faults and Faults Mask Register
- 9.6.3 TS Control and Faults Masks Register
- 9.6.4 Fast Charge Control Register
- 9.6.5 Termination/Pre-Charge and I2C Address Register
- 9.6.6 Battery Voltage Control Register
- 9.6.7 SYS VOUT Control Register
- 9.6.8 Load Switch and LDO Control Register
- 9.6.9 Push-button Control Register
- 9.6.10 ILIM and Battery UVLO Control Register
- 9.6.11 Voltage Based Battery Monitor Register
- 9.6.12 VIN_DPM and Timers Register
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13器件和文檔支持
- 14機(jī)械、封裝和可訂購信息
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- YFP|25
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購信息
3 說明
bq25120A 是一款高度集成的電池充電管理 IC，集成了可穿戴設(shè)備的最常用功能：線性充電器、穩(wěn)壓輸出、負(fù)載開關(guān)、通過計(jì)時(shí)器手動復(fù)位以及電池電壓監(jiān)測。該集成降壓轉(zhuǎn)換器是一款具有低 IQ 的高效率開關(guān)，其采用 DCS 控制技術(shù)，可進(jìn)一步提升輕載效率，負(fù)載電流可低至 10µA。運(yùn)行和關(guān)斷期間的低靜態(tài)電流有助于延長電池壽命。該器件支持 5mA 至 300mA 的充電電流。輸入電流限制、充電電流、降壓轉(zhuǎn)換器輸出電壓、LDO 輸出電壓等參數(shù)均可通過 I2C 接口進(jìn)行編程。
器件信息(1)
| 器件型號 | 封裝 | 封裝尺寸（標(biāo)稱值） |
|---|---|---|
| BQ25120A | DSBGA (25) | 2.50mm x 2.50mm |
- 要了解所有可用封裝，請參見數(shù)據(jù)表末尾的可訂購產(chǎn)品附錄。
簡化原理圖
