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参数资料
| 型号： | KIT34675EPEVBE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 9/14页 |
| 文件大小： | 0K |
| 描述： | KIT EVALUATION FOR MC34675 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电池充电器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MC34675 |
| 主要属性： | 1 芯锂离子电池 |
| 次要属性： | LED 状态指示器 |
| 已供物品： | 板，CD |
Evaluation Board Configuration
IMPORTANT: DO NOT APPLY HIGHER THAN 12V DC INPUT VOLTAGE TO VIN IF PINS 1
and 2 ARE SHORTED.
The absolute maximum voltage at the PPR and CHG pin is 12V. When applying higher than a
12V input voltage, select BAT to power the LEDs.
The JP3 pin header allows the user to disable the MC34675 when shorting pins 1 and 2. Leaving
it open enables the MC34675.
The JP4 pin header links the BAT pin and the external battery connector. It allows the user to
measure the charging current from the MC34675 into the battery with a current meter between
pins 1 and 2. The default setting is to short pins 1 and 2.
JP5 and JP6 are used to let the user supply an I/O logic voltage to PPR and CHG, so the system
can interface to the PPR and CHG signals with the same voltage level. When using LEDs to
indicate the charging status, leave JP5 and JP6 open. When interfacing the PPR and CHG signal
to the system, short pins 1 and 2 of JP5 and JP6, and leave JP2 open.
JP7 and JP8 set the charge current. The current values related to JP7 and JP8 settings are
The default configuration of the evaluation board is a standalone charger. The default settings of
Table 3. The Default Settings of the Pin Headers for Standalone Chargers
JP1
JP2
JP3
JP4
JP5
JP6
JP7
JP8
Pin Header Jumpers
Default Setting
Shorted
1 and 2 shorted
Open
Shorted
Open
Open
Shorted
Shorted
When using the evaluation board to connect to the system, please apply the required I/O logic
voltage at the VL pad of the evaluation board and set the pin header jumpers as shown in
Table 4. The Settings of the Pin Headers for an Embedded Charger Connecting to the System
Pin Header Jumpers
JP1
JP2
Default Setting
Shorted
Open
Using the High Input Voltage Charger for Single Cell Li-Ion Batteries , Rev. 1
Freescale Semiconductor
9
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