3 说明
bq24780S 器件是一款高效同步电池充电器,所含元件数较少,适用于空间受限的多化合物电池充电 应用。
bq24780S 器件支持混合动力升压模式(之前称之为“涡轮升压模式”)。当系统电源需求突然超过适配器最大电源水平时,可利用此模式对系统放电。这样适配器就不会受损。
bq24780S 器件利用两个电荷泵分别驱动 N 通道 MOSFET(ACFET、RBFET 和 BATFET),以便自动选择系统电源。
系统电源管理微控制器可以通过 SMBus 对具有较高调节精度的输入电流、充电电流、放电电流和充电电压 DAC 进行编程。
bq24780S 器件可监视适配器电流 (IADP)、电池放电电流 (IDCHG) 和系统电源 (PMON),以便主机根据需要控制 CPU 速度回落或减少系统电源。
bq24780S 器件可对 1、2、3 或 4 节串联锂离子电池充电。
器件型号 |
封装 |
封装尺寸(标称值) |
bq24780S |
WQFN (28) |
4.00 × 4.00mm2 |
- 要了解所有可用封装,请见数据表末尾的可订购米6体育平台手机版_好二三四附录。
4 修订历史记录
Changes from B Revision (April 2015) to C Revision
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完整数据表到米6体育平台手机版_好二三四文件夹Go
Changes from A Revision (April 2015) to B Revision
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Changed the Description for pin 22 (GND) in the Pin Functions tableGo
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Changed the Thermal Pad to PowerPAD in the Pin Functions tableGo
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Changed 16X to 20X on the SRP and SRN pins of the Functional Block Diagram Go
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Changed C4 From: 0.01 μF To: 0.1 μF in Figure 17 Go
Changes from * Revision (April 2015) to A Revision
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Changed V(ACOC) in the Electrical Characteristics, MIN From: 190% To: 180%, MAX From: 215% To: 220% Go
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Changed "ChargeOption() bit [0] = 0" To: REG0x12[0] in Enable and Disable ChargingGo
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Changed " (REG0x12[1])" To: (REG0x12[0]=1) in Enable and Disable ChargingGo
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Changed " REG0x12" To: "REG0x12[0]" in Battery ChargingGo
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Changed Bit [10:9] in Table 9 From: 11: 8 ms To: 11: 800 µs Go
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Added sentence to Bit [7:6] in Table 9 " If REG0x15() is programmed..."Go
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Changed text in Bit [5] of Table 9 From: "write 0x3C[2] = 1." To: "write 0x3C[2] = 0."Go
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Deleted text from Bit [5] of Table 9 "This function is not available in 1s battery."Go