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| 型号： | DS2784G+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/43页 |
| 文件大小： | 0K |
| 描述： | IC FUEL GAUGE STND-ALONE 14-TDFN |
| 产品培训模块： | 1-Wire Communications Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 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： | 管件 |
| 产品目录页面： | 1437 (CN2011-ZH PDF) |
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DS2784: 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
discharge FETs. . If the device does not enter sleep mode for an UV condition (UVEN=0) then the FETs will turn
on once V IN > V UV .
Overcurrent, Charge Direction (COC). Charge current develops a negative voltage on V SNS with respect to V SS . If
V SNS is less than the charge overcurrent threshold (V COC ) for a period longer than overcurrent delay (t OCD ), the
DS2784 shuts off both external FETs and sets the COC flag in the protection register. The charge current path is
not re-established until the voltage on the PLS pin drops below V DD - V TP . The DS2784 provides a pulldown current
(I TST ) from PLS to V SS to pull PLS down in order to detect the removal of the offending charge current source.
Overcurrent, Discharge Direction (DOC). Discharge current develops a positive voltage on V SNS with respect to
V SS . If V SNS exceeds the discharge overcurrent threshold (V DOC ) for a period longer than t OCD , the DS2784 shuts off
the external discharge FET and sets the DOC flag in the protection register. The discharge current path is not re-
established until the voltage on PLS rises above V DD - V TP . The DS2784 provides a test current (I TST ) from V DD to
PLS to pull PLS up in order to detect the removal of the offending low-impedance load.
Short Circuit. If V SNS exceeds short-circuit threshold V SC for a period longer than short-circuit delay (t SCD ), the
DS2784 shuts off the external discharge FET and sets the DOC flag in the protection register. The discharge
current path is not re-established until the voltage on PLS rises above V DD - V TP . The DS2784 provides a test
current of value (I TST ) from V DD to PLS to pull PLS up in order to detect the removal of the short circuit.
Figure 2. Li+ Protection Circuitry Example Waveforms
V IN
Discharge
V SNS
Charge
V OV
V CE
V UV
V SC
V DOC
0
-V COC
CC
DC
t OVD
t SCD
t OVD
t OCD
t OCD
t UVD
t UVD
V CP
V DD
V CP
V PLS
Power
Mode
14 of 43
ACTIVE
SLEEP
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2784G R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication |
| DS2784G T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication |
| DS2784G+ | 功能描述:电池管理 Stand-Alone Fuel Gauge RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| DS2784G+R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Cell Stand-Alone Fuel Gauge IC with Li Protector and SHA-1 Authentication |
| DS2784G+T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Cell Stand-Alone Fuel Gauge IC with Li Protector and SHA-1 Authentication |
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