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参数资料
| 型号： | DS2778G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 26/46页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE LI+ 2CELL 14-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4 V ~ 9.2 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-TDFN-EP（3x5） |
| 包装： | 带卷 (TR) |
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2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with
Protector and Optional SHA-1 Authentication
Status Register Format
The Status register contains bits that report the device status. All bits are set internally. The CHGTF, AEF, SEF, and
LEARNF bits are read-only.
Status Register (01h)
BIT 7
CHGTF
BIT 6
AEF
BIT 5
SEF
BIT 4
LEARNF
BIT 3
X
BIT 2
X
BIT 1
X
BIT 0
X
Bit 7: Charge-Termination Flag (CHGTF). CHGTF is set to indicate that the average of the voltages on V IN1 and
V IN2 and the Average Current register values have persisted above the VCHG and below the IMIN thresholds suffi-
ciently long enough to detect a fully charged condition. CHGTF is cleared when RARC is less than 90%. CHGTF is
read-only.
Bit 6: Active-Empty Flag (AEF). AEF is set to indicate that the battery is at or below the active-empty point. AEF is
set when the average of the voltages on V IN1 and V IN2 is less than the VAE threshold. AEF is cleared when RARC is
greater than 5%. AEF is read-only.
Bit 5: Standby-Empty Flag (SEF). SEF is set to indicate RSRC is less than 10%. SEF is cleared when RSRC is
greater than 15%. SEF is read-only.
Bit 4: Learn Flag (LEARNF). LEARNF indicates that the current-charge cycle can be used to learn the battery
capacity. LEARNF is set when the active-empty point is detected. This occurs when the average of the voltages on
V IN1 and V IN2 drops below the VAE threshold and the two previous current register values were negative and
greater in magnitude than the IAE threshold. See the Active-Empty Point Detect section for additional information.
LEARNF is cleared when any of the following occur:
1) Learn cycle completes (CHGTF set).
2) Current register value becomes negative indicating discharge current flow.
3) ACR = 0.
4) ACR value is written or recalled from EEPROM.
5) Sleep mode is entered.
LEARNF is read-only.
Bit 3 to 0: Reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2778K | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| DS2780 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2780_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Standalone Fuel Gauge IC |
| DS2780E | 制造商:Maxim Integrated Products 功能描述:STANDALONG FUELD GAUGE TSSOP - Rail/Tube |
| DS2780E/R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
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