- 您现在的位置：买卖IC网 > PDF目录15549 > MAX8934DETI+T (Maxim Integrated Products)IC LI+/LIPOLY BATT CHRGER 28WQFN PDF资料下载
参数资料
| 型号： | MAX8934DETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/32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) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页当前第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
MAX8934A–MAX8934E
Dual-Input Linear Chargers, Smart Power Selector
with Advanced Battery Temperature Monitoring
Pin Description (continued)
PIN
16
17
18, 19
20, 21
22
23, 24
25
26
27
28
—
NAME
THMSW
LDO
USB
BATT
CHG
SYS
OT
DOK
UOK
FLT
EP
FUNCTION
Thermistor Pullup Supply Switch. Drive THMEN high to enable the THMSW, shorting the THMSW output
to LDO. Drive THMEN low to open the THMSW switch. THMSW is always on when a valid input source
is present and the battery is being charged. When no input source is present, THMSW is controlled by
THMEN. THMSW is also active when the battery is being discharged, so that the battery temperature
can be monitored for an overtemperature condition.
Always-On Linear Regulator Output. LDO is the output of an internal always-on 3.3V LDO that provides
power to external circuitry. The LDO output provides up to 30mA of current for indicator LEDs or other
loads. LDO remains active even when only a battery is present, so that the thermistor monitor circuitry
can be activated when the battery is being discharged, and other circuitry can remain powered.
Connect a 1 F F ceramic capacitor from LDO to GND.
USB Power Input. USB is capable of delivering up to 0.5A to SYS in the MAX8934A/MAX8934B/
MAX8934C/MAX8934E. The USB current limit is set with PEN2 and USUS. See Table 2a. In the
MAX8934D, USB is capable of delivering up to 1.5A to SYS. Both USB pins must be connected together
externally. Connect a 4.7 F F ceramic capacitor from USB to GND. The USB input should be grounded if
it is not used.
Battery Connection. Connect the positive terminal of a single-cell Li+ battery to BATT. The battery
charges from SYS when a valid source is present at DC or USB. BATT powers SYS when neither DC nor
USB power is present, or when the SYS load exceeds the input current limit. Both BATT pins must be
connected together externally.
Charger Status Output. The CHG active-low, open-drain output pulls low when the battery is in fast
charge or prequal. Otherwise, CHG is high impedance.
System Supply Output. SYS is connected to BATT through an internal 40m I system load switch when
DC or USB are invalid, or when the SYS load is greater than the input current limit.
When a valid voltage is present at DC or USB, SYS is limited to 5.3V (MAX8934A) or 4.35V (MAX8934B/
MAX8934C/MAX8934D/MAX8934E). When the system load (I SYS ) exceeds the DC or USB current limit,
SYS is regulated to 68mV below V BATT and both the input and the battery service the SYS load.
Bypass SYS to GND with a 10 F F ceramic capacitor. Both SYS pins must be connected together
externally.
Battery Overtemperature Flag. The OT active-low, open-drain output pulls low when THMEN is high and
the battery temperature is R +75 N C.
DC Power-OK Output. The DOK active-low, open-drain output pulls low when a valid input is detected
at DC.
USB Power-OK Output. The UOK active-low, open-drain output pulls low when a valid input is detected
at USB.
Fault Output. The FLT active-low, open-drain output pulls low when the battery timer expires before
prequal or fast charge complete.
Exposed Pad. Connect the exposed pad to GND. Connecting the exposed pad does not remove the
requirement for proper ground connections to the appropriate pins.
Maxim Integrated
15
相关PDF资料 |
PDF描述 |
|---|---|
| 1435860-3 | PATCHCORD CAT6 GRN/GRN BOOT 3' |
| MAX8934CETI+T | IC BATTERY CHARGER DUAL 28TQFN |
| 1435835-3 | PATCHCORD CAT6 AMPTRAC GRAY 3' |
| AIUR-04-392J | INDUCTOR POWER 3900UH 5% T/H |
| ESC10DRTS-S13 | CONN EDGECARD 20POS .100 EXTEND |
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 |
发布紧急采购，3分钟左右您将得到回复。