MAX1772充电管理IC引脚定义.docVIP

MAX1772充电管理IC引脚定义 PIN NAME FUNCTION 1 DCIN Charging Voltage Input 充电电压输入。 2 LDODevice Power Supply. Output of the 5.4V linear regulator supplied from DCIN . Bypass with a 1μF capacitor . 驱动供电。由内部线性稳压器输出5.4V提供，接1UF旁路电容。 3 Source Current Limit Input. Voltage input for setting the current limit of the input source. 电流源限流输入。输入电压输入源限流设定。 4 REF 4.096V Voltage Reference. Bypass with 1μF to GND. 4/096V基准参考电压。旁路1UF电容至地。 5 CCS Input Current Regulation Loop Compensation Point. Use 0.01μF to GND. 输入电流调环补偿点。使用0.01UF电容至地。 6 CCI Output Current Regulation Loop Compensation Point. Connect 0.01μF to GND. 输电流调环补偿点。使用0.01UF电容至地。 7 CCV Voltage Regulation Loop Compensation Point. Connect 1kΩ in series with 0.1μF to GND. 电压调环路补偿点。连接1K欧电阻串联0.1UF电容至地。 8 GND Analog Ground 模拟地。 9 GND Analog Ground 模拟地。 10 ICHG ICHG is a scaled-down replica of the battery output current being sensed. It is used to monitor the charging current and indicates when the chip changes from voltage mode to current mode. The transconductance of (CSIP - CSIN) to ICHG is 1μS. Connect ICHG pin to GND if it is unused. ICHG是用于电池电流检测输出复制，当芯片从电压模式到电流模式改变监测充电电流并示。CSIP-CSIN到ICHG的跨导是1US。如果不使用连接ICHG引脚至地。 11 ACIN AC Detect Input. Detects when the AC adapter voltage is available for charging. AC检测输入。当AC适配器电压可用于充电时检测。 12 ACOK AC Detect Output. Open-drain output is high when ACIN is less than REF/2. AC检测输出。当ACIN低于REF/2时开漏输出为高。 13 REFIN Reference Input. Allows the ICTL and VCTL pins to have ratiometric ranges for increased DAC accuracy. 参考输入。ICTL和VCTL引脚有比例范围增加数模精准度。 14 ICTL Input for Setting Maximum Output Current. Range is REFIN/32 to REFIN. The device shuts down if this pin is forced below REFIN/55 (typ). 最大输出电流设定。范围REFI/32到REFIN，低于REFIN/55（典型）强制关断该引脚。 15 VCTL Input for Setting Maximum Output Voltage. Range is 0 to REFIN. 设定最大输出电压。范围从0到REFIN。 16 CELLS Trilevel Input for Setting Number of Cells. GND = 2 cells, LDO/2 = 3 cells, LDO = 4 cells. 三种输入设定电池节数。GND=2节，LDO/2=3节，LDO=4节。 17 BATT Battery Voltage Input. 电池电压输入。 18