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| 型号： | MAX1874ETE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/17页 |
| 文件大小： | 0K |
| 描述： | IC LI+ CHARGER DUAL-IN 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 4.35 V ~ 6.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（5x5） |
| 包装： | 托盘 |
| 产品目录页面： | 1410 (CN2011-ZH PDF) |
Dual-Input, USB/AC Adapter, 1-Cell
Li+ Charger with OVP and Thermal Regulation
Pin Description
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NAME
DCLV
DC
CHG
USEL
EN
GND
DCI
THRM
REF
PGND
BYP
USB
UOK
PON
BATT
DCOK
FUNCTION
Low-Voltage Charger Input. DCLV charges BATT through an internal MOSFET. Maximum operating
voltage at this pin is 6.0V. When an overvoltage protection MOSFET is connected, DCLV is connected to
DC when the input voltage is suitable for charging.
Voltage-Sense Pin for DC Input from AC Adapter. Maximum operating voltage at this pin is 18V.
CHG is an active-low, open-drain output that goes low when the MAX1874 is charging and goes high
when both of the following conditions are met (see the Battery Full ( CHG ) section):
1) Charge current drops to a set threshold (Table 2).
2) The charger is in voltage mode.
USEL is a logic input that sets USB source charging current to 500mA when USEL is logic high and to
100mA when USEL is logic low.
Enable/Disable Input. Drive EN high to enable the device. When EN is low, UOK , DCOK , PON, and REF
remain active.
Ground
The voltage at this input sets the fast-charge current when the DCLV input is powering the charger. See
the Charging Current section.
THRM pauses charging when an externally connected thermistor (10k ? at +25 ° C) is at less than 0 ° C or
greater than +50 ° C. Connect to GND to disable. See the External Thermistor Monitor (THRM) section.
3V Reference Output. Sources up to 500μA to bias I DCI and external thermistor. Bypass with 0.1μF to
GND. REF loading does not affect BATT regulation accuracy.
Power Ground. Connect to GND at a single, low-impedance point.
BYP powers internal circuitry and switches to the active input (either DCLV or USB). Bypass with a 2.2μF
capacitor to GND.
USB Charger Input. Charges BATT through an internal MOSFET.
UOK is an active-low, open-drain output that goes low to indicate when the USB input is the valid
charging source.
PON is an active-high, open-drain output with an internal 120k ? resistor to ground that goes high when
V DC or V USB > V BATT . PON can directly drive an external PFET that disconnects the battery from the
system load when power is applied.
Charge Output. Connect to the positive terminal of the Li+ battery.
DCOK is an active-low, open-drain output that goes low when 3.5V < V DC < 6.2V.
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1874ETE+ | 功能描述:电池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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 |
| MAX1874ETE+T | 功能描述:电池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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 |
| MAX1874ETE-T | 功能描述:电池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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 |
| MAX1874EVKIT | 功能描述:电池管理 Evaluation Kit for the MAX1874 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 |
| MAX1875AEEG | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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