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| 型号： | MAX8934DETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/32页 |
| 文件大小： | 0K |
| 描述： | IC LI+/LIPOLY BATT CHRGER 28WQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 系列： | Smart Power Selector™ |
| 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： | 4.1 V ~ 6.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
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MAX8934A–MAX8934E
Dual-Input Linear Chargers, Smart Power Selector
with Advanced Battery Temperature Monitoring
Pin Description
14
PIN
1
2, 3
4
5
6
7
8
9, 13
10
11
12
14
15
NAME
DONE
DC
CEN
PEN1
PEN2
PSET
V L
GND
CT
ISET
USUS
THM
THMEN
FUNCTION
Charge Complete Output. The DONE active-low, open-drain output pulls low when the charger enters
the DONE state. The charger current = 0mA when DONE is low. See Figure 8.
DC Power Input. DC is capable of delivering up to 2A to SYS. DC supports both AC adapter and USB
inputs. The DC current limit is set with PEN1, PEN2, and R PSET . See Table 2. Both DC pins must be
connected together externally. Connect a 10 F F ceramic capacitor from DC to GND. The DC inputs should
be grounded if not used.
Active-Low Charger Enable Input. Connect CEN to GND or drive low with a logic signal to enable
battery charging when a valid source is connected at DC or USB. Drive high with a logic signal to
disable battery charging.
Input Limit Control 1. See Table 2a for complete information (MAX8934A/MAX8934B/MAX8934C/
MAX8934E).
Input Limit Control 1. See Table 2b for complete information (MAX8934D).
Input Limit Control 2. See Table 2a for complete information (MAX8934A/MAX8934B/MAX8934C/
MAX8934E).
Input Limit Control 2. See Table 2b for complete information (MAX8934D).
DC Input Current-Limit Setting. Connect a resistor from PSET to GND to program the DC current limit up
to 2A (3000/R PSET ).
Internal Logic LDO Output Bypass Pin. Provides 3.3V when DC or USB is present. Connect a 0.1 F F
ceramic capacitor from V L to GND. V L powers the internal circuitry and provides up to 5mA to an
external load.
Ground. Both GND pins must be connected together externally.
Charge Timer Program Input. A capacitor from CT to GND sets the maximum prequal and fast-charge
timers. Connect CT to GND to disable the timer.
Charge Current-Limit Setting. A resistor (R ISET ) from ISET to GND programs the fast-charge charge
current up to 1.5A (3000/R ISET ). The prequal charge current is 10% of the set fast-charge charge
current.
USB Suspend Digital Input. As shown in Table 2a, driving USUS high suspends the DC or USB inputs if
they are configured as a USB power input (MAX8934A/MAX8934B/MAX8934C/MAX8934E).
USB Suspend Digital Input. As shown in Table 2b, driving USUS high suspends the DC or USB inputs if
they are configured as a USB power input (MAX8934D).
Thermistor Input. Connect a negative temperature coefficient (NTC) thermistor with good thermal
contact with the battery from THM to GND. Use a thermistor with Beta = 3964. Connect a resistor
of equal resistance to the thermistor resistance at +25 ° C from THM to THMSW so that the battery
temperature can be monitored, and the fast-charge current and/or the charge termination voltage is
automatically adjusted, in accordance with safety region 1 or safety region 2 of the JEITA specification.
Thermistor Enable Input. THMEN controls THMSW by connecting the external thermistor pullup resistor
and the thermistor monitoring circuit to LDO. Drive THMEN high to enable the thermistor circuit in
discharge mode and to connect the external thermistor pullup resistor. Drive THMEN low to disconnect
the external thermistor pullup resistor and to disable the thermistor monitoring circuit to conserve
battery energy when not charging.
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8934EETI+ | 功能描述:电池管理 Dual Linear Charger Smart Power Selector 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 |
| MAX8934EETI+ | 制造商:Maxim Integrated Products 功能描述:IC BATTERY CHARGER DUAL 28TQFN 制造商:Maxim Integrated Products 功能描述:IC, BATTERY CHARGER, DUAL, 28TQFN |
| MAX8934EETI+T | 功能描述:电池管理 Dual Linear Charger Smart Power Selector 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 |
| MAX8934GETI+ | 功能描述:电池管理 Dual Linear Charger Smart Power Selector 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 |
| MAX8934GETI+CAK | 功能描述:电池管理 Dual Input Linear Chargers Smart Power Selector 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 |
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