参数资料
型号: MAX1926ETC+
厂商: Maxim Integrated Products
文件页数: 8/16页
文件大小: 0K
描述: IC CHARGER LI+ 12-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 75
功能: 充电管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.5 V ~ 12 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 12-WQFN 裸露焊盘
供应商设备封装: 12-TQFN-EP(4x4)
包装: 管件
Switch-Mode 1-Cell Li+ Chargers
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
NAME
CHG
EN
THRM
ACON
CT
CS
BATT
GND
PGND
EXT
INP
IN
FUNCTION
Charge Status LED Driver. Open-drain LED driver sinks 10mA when the MAX1925/MAX1926 are charging.
CHG also blinks at a 0.5Hz rate during fault states (see the Timing section). High impedance when charger is
in shutdown. See Tables 1 and 2.
Enable. Drive EN high to enable charger. Logic level input for normal ON/OFF control. In the MAX1926 EN is
internally pulled up to 3V with a 300k ? resistor.
Thermistor Input. Monitors external thermistor (10k ? at +25 ° C). When external temperature is lower than 0 ° C
or above +50 ° C, charging stops and the charger enters fault mode. Charging resumes when the temperature
returns to normal. During a temperature fault the MAX1926 blinks the CHG output, while MAX1925 CHG
remains off (high).
Power-OK Indicator Output. Open-drain output goes low when AC adapter power is valid. See Table 2 for
ACON states.
Timing Capacitor Connection. Connect timer cap to program full-charge safety timeout interval and
prequalification fault times. Timeouts with C CT = 100nF are:
Full Timer (t FULLCHG ): 3 hours — If FASTCHG is not completed within this time a fault is asserted.
Prequal2 Timer: Full Timer/17 (10.67 min)
Prequal1 Timer: Full Timer/1088 (10s)
Charge-Current Sense Input. 142mV nominal regulation threshold. CS is high impedance during shutdown.
Battery-Sense Input. Also negative side of charge-current sense. BATT is high impedance during shutdown.
Ground
Power Ground
PMOS Gate-Driver Output. Drives gate of external PMOS switching transistor from IN to GND. When using the
MAX1926, ensure that the MOSFET V GS rating is greater than V IN .
Supply Voltage Input
Supply-Sense Input. Connect IN to INP.
8
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MAX1926ETC+ 功能描述:电池管理 Switch-Mode 1-Cell Li+ Charger 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
MAX1926ETC+T 功能描述:电池管理 Switch-Mode 1-Cell Li+ Charger 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
MAX1926ETC-T 功能描述:电池管理 Switch-Mode 1-Cell Li+ Charger 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
MAX1926EVKIT 功能描述:电池管理 Evaluation Kit for the MAX1925 MAX1926 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
MAX1927REUB 功能描述:直流/直流开关转换器 800mA PWM Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT