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| 型号： | MAX8934AETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY CHARGER DUAL 28TQFN |
| 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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EVALUATION KIT AVAILABLE
MAX8934A–MAX8934E
Dual-Input Linear Chargers, Smart Power Selector
with Advanced Battery Temperature Monitoring
General Description
The MAX8934_ dual-input Li+/Li-Poly linear battery char-
gers with Smart Power Selector K safely charge a single
Li+/Li-Poly cell in accordance with JEITA recommenda-
tions. The MAX8934_ monitors the battery temperature
(T BATT ) while charging, and automatically adjusts the
fast-charge current and charge termination voltage as the
battery temperature varies. The MAX8934_ also monitors
the battery temperature while the battery is discharging,
and provides a warning flag ( OT ) to the system in the
event that the battery is over temperature. Two safety pro-
files are supported (see Figure 6 for details). An ultra-low
I Q , always-on LDO provides an additional 3.3V supply for
system power.
The MAX8934_ operates with either separate inputs
for USB and AC adapter power*, or from a single input
that accepts both. All power switches for charging and
switching the load between battery and external power
are included on-chip. No external MOSFETs are required.
The MAX8934_ features a Smart Power Selector to make
the best use of limited USB or adapter power. Input cur-
rent limit and battery charge current limit are indepen-
Features
S Li+ Charger with Smart Power Selector, No
External MOSFETs Needed
S Monitors Battery Temperature and Adjusts Charge
Current and Termination Voltage Automatically
per JEITA Recommendations
S OT Flags System of a Hot Battery During
Discharge
S Ultra-Low I Q , Always-On 3.3V LDO
S Common or Separate USB and Adapter Inputs
S Automatic Adapter/USB/Battery Switchover
S Load Peaks in Excess of Adapter Rating are
Supported by Battery
S Input OVP to 16V (DC) and 9V (USB)
S 40m I SYS-to-BATT Switch
S Thermal Regulation Prevents Overheating
S 4.35V or 5.3V SYS Regulation Voltage
S 1.5A (max) USB Input Current Limit (MAX8934D)
Ordering Information
dently set. Input power not used by the system charges
PART
TEMP RANGE
PIN-PACKAGE
the battery. Charge current limit and DC current limit can
be set up to 1.5A and 2A, respectively, while USB input
current can be set to 100mA or 500mA for the MAX8934A/
MAX8934B/MAX8934C/MAX8934E and up to 1.5A (max)
for the MAX8934D. Automatic input selection switches the
system load from battery to external power.
The MAX8934A provides a SYS output voltage of 5.3V,
while the MAX8934B–MAX8934E provides a SYS output
MAX8934A ETI+ -40 N C to +85 N C 28 Thin QFN-EP**
+ Denotes a lead(Pb)-free/RoHS-compliant package.
** EP = Exposed pad.
Ordering Information continued and Selector Guide appears
at end of data sheet.
Typical Operating Circuit
voltage of 4.35V.
Other features include overvoltage protection (OVP),
3.3V ALWAYS-ON
LDO
open-drain charge status and fault outputs, power-OK
monitors, charge timers, and a battery thermistor moni-
tor. Additionally, on-chip thermal limiting reduces the
battery charge-rate to prevent charger overheating.
The MAX8934_ is available in a 28-pin, 4mm x 4mm,
TQFN package.
Applications
PDAs, Palmtop, and Wireless Handhelds
Portable Media, MP3 Players, and PNDs
Digital Still Cameras and Digital Video Cameras
AC
ADAPTER
USB
DC Q1
USB Q2
LINEAR
REGULATOR
CHARGE
CURRENT
CHARGE
AND
SYS LOAD
SWITCH
Q3
SYS
LOAD
CURRENT
BATT
SYSTEM
LOAD
BATTERY
Handheld Game Systems
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
MAX8934A?
MAX8934E
GND
* Protected by U.S. Patent #6,507,172.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-4995; Rev 3; 1/14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8934BETI+ | 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 |
| MAX8934BETI+ | 制造商:Maxim Integrated Products 功能描述:IC BATTERY CHARGER DUAL 28TQFN |
| MAX8934BETI+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 |
| MAX8934CETI+ | 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 |
| MAX8934CETI+ | 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 |
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