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| 型号： | MAX1926ETC+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/16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 |
19-2556; Rev 1; 10/02
ATION
EVALU
AVAIL
KIT
ABLE
Switch-Mode 1-Cell Li+ Chargers
General Description
The MAX1925/MAX1926 single-cell lithium-ion (Li+)
switch-mode battery chargers use an external PMOS
pass element step-down configuration. Charge current
is programmable, and an external capacitor sets the
maximum charge time.
Additional features include automatic input power
detection ( ACON output), logic-controlled enable, and
temperature monitoring with an external thermistor. The
MAX1925 disables charging for inputs greater than
6.1V, while the MAX1926 charges for inputs between
4.25V and 12V.
The MAX1925/MAX1926 feature two precondition levels
to restore near-dead cells. The devices source 4mA to
a cell that is below 2V while sourcing C/10 to a cell
between 2V and 3V. Full charge current is then applied
above 3V. A CHG output drives an LED to indicate
charging (LED on) and fault conditions (LED blinking).
The MAX1925/MAX1926 are available in a 12-pin
4mm ? 4mm thin QFN package and are specified over
the extended temperature range (-40°C to +85°C). An
Features
o Small (4mm ? 4mm) Package
o 4.25V to 12V Input Range (MAX1926)
o Overvoltage Lockout at 6.1V (MAX1925)
o ±0.75% Battery Regulation Voltage
o Set Charge Current with One Resistor
o Automatic Input Power Sense
o LED (or Logic-Out) Charge Status and Fault
Indicator
o Programmable Safety Timer
o Autorestart at Cell = 4V
o Thermistor Monitor Input
Ordering Information
evaluation kit is available to speed design.
PART
TEMP
RANGE
PIN-
PACKAGE
INPUT
CHARGING
RANGE
Digital Cameras
Self-Charging Battery Packs
PDAs
Applications
MAX1925 ETC
MAX1926 ETC
-40 ° C to +85 ° C
-40 ° C to +85 ° C
12 Thin QFN
4mm x 4mm
12 Thin QFN
4mm x 4mm
4.5V to 6.1V
4.25V to 12V
Cradle Chargers
Typical Operating Circuit
Pin Configuration
INPUT
4.5V TO 12V
IN
INP
EXT
12
11
10
IN
INP
EXT
PGND
CS
CHG
1
9
PGND
LED
CHG
BATT
EN
2
MAX1925
MAX1926
8
GND
CT
MAX1925
MAX1926
GND
THRM
3
7
BATT
THRM
4
5
6
ON
OFF
EN
ACON
1-CELL
Li+
ACON
CT
CS
BATTERY
THIN QFN
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
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