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参数资料
| 型号： | DS2784G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 26/43页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE STND-ALONE 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： | 2.5 V ~ 4.6 V |
| 工作温度： | -40°C ~ 85°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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DS2784: 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
LEARNF —Learn Flag. 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 voltage register value 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.
UVF —Undervoltage Flag. UVF is set to indicate that the voltage measurement of the V IN pin is less than V UV , and
must be written to a 0 to allow subsequent undervoltage events to be reported. UVF is not cleared internally.
Writing UVF to 0 is effective only when V IN is greater or equal to V UV , otherwise, UV remains set due to the
persistent undervoltage condition. UVF is set on power-up.
PORF —Power-On Reset Flag. PORF is set to indicate initial power-up. PORF is not cleared internally. The user
must write this flag value to a 0 to use it to indicate subsequent power-up events. If PORF indicates a power-on
reset, the ACR could be misaligned with the actual battery state of charge. The system can request a charge to full
to synchronize the ACR with the battery charge state. PORF is read/write-to-zero.
X —Reserved Bits.
RESULT REGISTERS
The DS2784 processes measurement and cell characteristics on a 3.5s interval and yields seven result registers.
The result registers are sufficient for direct display to the user in most applications. The host system can produce
customized values for system use or user display by combining measurement, result and user EEPROM values.
FULL(T) [ ] —The full capacity of the battery at the present temperature is reported normalized to the 40°C full
value. This 15-bit value reflects the cell model Full value at the given temperature. FULL(T) reports values between
-14
even though the register format permits values greater than 100%.
Active Empty, AE(T) [ ] —The active-empty capacity of the battery at the present temperature is reported
normalized to the 40°C full value. This 13-bit value reflects the cell model active-empty value at the given
-14
Standby Empty, SE(T) [ ] —The standby-empty capacity of the battery at the present temperature is reported
normalized to the 40°C full value. This 13-bit value reflects the cell model standby-empty value at the current
-14
Remaining Active Absolute Capacity (RAAC) [mAh] —RAAC reports the remaining battery capacity available
under the current temperature conditions to the active-empty point in absolute units of milliamp-hours (mAhr).
RAAC is 16 bits.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2784K | 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 |
| DS2786 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Standalone OCV-Based Fuel Gauge |
| DS2786_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone OCV-Based Fuel Gauge |
| DS2786B | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone OCV-Based Fuel Gauge |
| DS2786BEVKIT+ | 制造商:Maxim Integrated Products 功能描述:STANDALONE OCV-BASED FUEL GAUGE - Boxed Product (Development Kits) |
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