ZHCSJX0A June 2019 – January 2021 BQ25125
PRODUCTION DATA
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 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 Battery Supplement Mode
- 9.3.10 Default Mode
- 9.3.11 Termination and Pre-Charge Current Programming by External Components (IPRETERM)
- 9.3.12 Input Current Limit Programming by External Components (ILIM)
- 9.3.13 Charge Current Programming by External Components (ISET)
- 9.3.14 Safety Timer
- 9.3.15 External NTC Monitoring (TS)
- 9.3.16 Thermal Protection
- 9.3.17 Typical Application Power Dissipation
- 9.3.18 Status Indicators ( PG and INT)
- 9.3.19 Chip Disable ( CD)
- 9.3.20 Buck (PWM) Output
- 9.3.21 Load Switch / LDO Output and Control
- 9.3.22 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 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
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
- YFP|25
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
訂購信息
9.4 Device Functional Modes
Table 9-10 Modes and Functions
| FUNCTION | READY (PRIOR TO I2C) AND AFTER RESET | HOST MODE READY (AFTER I2C) | CHARGE | SHIP MODE | HIGH_Z | ACTIVE BATTERY |
|---|---|---|---|---|---|---|
| VOVP | Yes | Yes | Yes | No | No | No |
| VUVLO | Yes | Yes | Yes | Yes | Yes | Yes |
| VBATUVLO | Yes | Yes | Yes | No | Yes | Yes |
| VINDPM | Default or registers | Default or registers | If enabled | No | No | No |
| SYS | Default or registers | Default or registers | If enabled | No | If enabled | If enabled |
| LS/LDO | Default or registers | Default or registers | If enabled | No | If enabled | If enabled |
| BATFET | Yes | Yes | Yes | No | Yes | Yes |
| TS | Yes (VIN Valid) | Yes (VIN Valid) | Yes | No | No | No |
| IPRETERM | External | Default, registers, or external | Default, registers, or external | No | No | No |
| ISET | External | Default, registers, or external | Default, registers, or external | No | No | No |
| ILIM | External | Default, registers, or external | Default, registers, or external | No | No | No |
| MR input | Yes | Yes | Yes | Yes | Yes | Yes |
| LSCTRL input | Yes | Yes | Yes | No | Yes | Yes |
| RESET output | Yes | Yes | Yes | No | Yes | Yes |
| INT output | Yes | Yes | Yes | No | No | Yes |
| I2C interface | Yes | Yes | Yes | No | No | Yes |
| CD input | Yes | Yes | Yes | No | Yes | Yes |
| PG output | Yes | Yes | Yes | No | No | If enabled |
| VBMON | No | Yes | No | No | No | Yes |
Table 9-11 Fault and Status Condition
Responses
| FAULT or STATUS | ACTIONS | CHARGER BEHAVIOR | SYS BEHAVIOR | LS/LDO BEHAVIOR | TS BEHAVIOR |
|---|---|---|---|---|---|
| VIN_OV | Update VIN_OV status, Update STAT to fault, interrupt on INT, PG shown not good | Disabled | Enabled through BAT | Enabled through BAT | Disabled |
| VIN_UV | Update VIN_UV status, interrupt on INT, PG shown not good | Disabled | Enabled through BAT | Enabled through BAT | Disabled |
| VIN_ILIM | Update charge in progress status, interrupt on INT, input current is limited | Enabled, input current limited | Enabled (if enabled) | Enabled (if enabled) | Enabled |
| OVER_TEMP | Disabled | Disabled | Disabled | Disabled | |
| BAT_UVLO | Update BAT_UVLO status, Update STAT to fault, interrupt on INT | Pre-charge | Enabled (if enabled) and VIN Valid | Enabled (if enabled) and VIN Valid | Enabled if VIN Valid |
| SW_SYS_SHORT | Enabled | Current Limit | Enabled (if enabled) | Enabled | |
| LS_LDO_OCP | Enabled | Enabled (if enabled) | Current Limit | Enabled | |
| TIMER fault | Update TIMER, Update STAT to fault, interrupt on INT | Disabled | Enabled (if enabled) | Enabled (if enabled) | Disabled |
| VINDPM | Update VINDPM_STAT, Update STAT to fault, interrupt on INT | Enabled, input current reduced | Enabled (if enabled) | Enabled (if enabled) | Enabled |
| TS_FAULT COLD or HOT | Update TS_FAULT to COLD OR HOT, Update STAT to fault, interrupt on INT | Disabled | Enabled (if enabled) | Enabled (if enabled) | Enabled |
| TS_FAULT COOL | Update TS_FAULT to COOL, Update STAT to fault, interrupt on INT | Reduce ICHG to ? | Enabled (if enabled) | Enabled (if enabled) | Enabled |
| TS_FAULT WARM | Update TS_FAULT to WARM, Update STAT to fault, interrupt on INT | Reduce VBATREG by 140 mV | Enabled (if enabled) | Enabled (if enabled) | Enabled |
| Charge Done | Update STAT to Charge Done, interrupt on INT | Disabled, monitor for VBAT falling below VRCHG | Enabled (if enabled) | Enabled (if enabled) | Enabled |
Figure 9-5 State
Diagram
Figure 9-6 Change
State Diagram