ZHCSGD8A May 2017 – May 2018
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 說明 （續）
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Power-Up from Battery Without DC Source
- 8.3.2 Power-Up From DC Source
- 8.3.3 USB On-The-Go (OTG)
- 8.3.4 Converter Operation
- 8.3.5 Current and Power Monitor
- 8.3.6 Input Source Dynamic Power Manage
- 8.3.7 Two-Level Adapter Current Limit (Peak Power Mode)
- 8.3.8 Processor Hot Indication
- 8.3.9 Device Protection
- 8.4 Device Functional Modes
- 8.5 Programming
- 8.6
Register Map
- 8.6.1
Setting Charge and PROCHOT Options
- 8.6.1.1 ChargeOption0 Register (I2C address = 01/00h) [reset = E20Eh]
- 8.6.1.2 ChargeOption1 Register (I2C address = 31/30h) [reset = 211h]
- 8.6.1.3 ChargeOption2 Register (I2C address = 33/32h) [reset = 2B7]
- 8.6.1.4 ChargeOption3 Register (I2C address = 35/34h) [reset = 0h]
- 8.6.1.5 ProchotOption0 Register (I2C address = 37/36h) [reset = 04A54h]
- 8.6.1.6 ProchotOption1 Register (I2C address = 39/38h) [reset = 8120h]
- 8.6.1.7 ADCOption Register (I2C address = 3B/3Ah) [reset = 2000h]
- 8.6.2 Charge and PROCHOT Status
- 8.6.3 ChargeCurrent Register (I2C address = 03/02h) [reset = 0h]
- 8.6.4 MaxChargeVoltage Register (I2C address = 05/04h) [reset value based on CELL_BATPRESZ pin setting]
- 8.6.5 MinSystemVoltage Register (I2C address = 0D/0Ch) [reset value based on CELL_BATPRESZ pin setting]
- 8.6.6 Input Current and Input Voltage Registers for Dynamic Power Management
- 8.6.7 OTGVoltage Register (I2C address = 07/06h) [reset = 0h]
- 8.6.8 OTGCurrent Register (I2C address = 09/08h) [reset = 0h]
- 8.6.9 ADCVBUS/PSYS Register (I2C address = 27/26h)
- 8.6.10 ADCIBAT Register (I2C address = 29/28h)
- 8.6.11 ADCIINCMPIN Register (I2C address = 2B/2Ah)
- 8.6.12 ADCVSYSVBAT Register (I2C address = 2D/2Ch)
- 8.6.13 ID Registers
- 8.6.1
Setting Charge and PROCHOT Options
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文檔支持
- 13機械、封裝和可訂購信息
8.3.8.1 PROCHOT During Low Power Mode
During low power mode (REG0x01[7] = 1), the charger offers a low quiescent current (~150 µA). Low power PROCHOT function uses the independent comparator to monitor battery discharge current and system voltage, and assert PROCHOT to CPU.
Below lists the register setting to enable PROCHOT during low power mode.
- REG0x01[7] = 1
- REG0x38[5:0] = 000000
- REG0x30[6:4] = 100
- Independent comparator threshold is always 1.2 V
- When REG0x31[6] = 1, charger monitors discharge current. Connect CMPIN to voltage proportional to IBAT pin. PROCHOT triggers from HIGH to LOW when CMPIN voltage falls below 1.2 V.
- When REG0x31[5] = 1, charger monitors system voltage. Connect CMPIN to voltage proportional to system. PROCHOT triggers from HIGH to LOW when CMPIN voltage rises above 1.2 V.
