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| LC709203F單個鋰電池電量檢測方案 |
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| 文章來源： 更新時間：2014/5/10 14:30:00 |
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On Semi公司的LC709203F是用于手持設備的單個鋰電池電量檢測集成電路(IC),具有高精度電池電量檢測和精密電壓測量,不需要外接電阻,支持高達400kHz的I2C接口和低功耗,主要用在無線手機,智能手機/PDA設備,MP3播放器,數碼相機,手持游戲機和USB相關設備.本文介紹了LC709203F主要特性和典型應按用電路,以及帶或不帶溫度檢測功能的LC709203F(WLCSP9)評估板電路圖,材料清單和PCB布局圖.
The LC709203F is an IC that measures the remaining power level of 1-cell lithium-ion (Li+) batteries used for a portable equipment etc. This product is able to reduce a fuel gauge errors by implementing its unique correction technology for measurement value of battery temperature and voltage. It is possible for this to realize high precision for measurement in battery power measurement IC that does not need a current sensing resistor.
LC709203F主要特性:
High accuracy of remaining battery power measurements
Precision Voltage Measurement
No external sense resistor
Alert function
Interface : I2C Interface (up to 400 kHz supported)
Low power consumption
Corresponding battery models for various battery electrode materials
Ports
I2C communication pin : 2 (SDA, SCL)
Battery temperature reading control pin : 1 (TSW)
Analog voltage input pin for battery temperature : 1 (TSENSE)
External alarm / Interrupt for Low-Battery warning : 1 (ALARMB)
Power supply pin : 2 (VSS, VDD)
LC709203F應用:
Wireless Handsets
Smartphones / PDA devices
MP3 players
Digital cameras
Portable Game Players
USB-related devices
圖1. LC709203F應用電路:沒有溫度檢測功能
圖2. LC709203F應用電路:有溫度檢測功能
圖3. LC709203F(WLCSP9)評估板外形圖
圖4. LC709203F(WLCSP9)評估板電路圖:沒有溫度檢測功能
圖5. LC709203F(WLCSP9)評估板電路圖:有溫度檢測功能
LC709203F(WLCSP9)評估板材料清單:
圖6. LC709203F(WLCSP9)評估板PCB布局圖:頂層
圖7. LC709203F(WLCSP9)評估板PCB布局圖:底層 |
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