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参数资料
| 型号： | MAX1925ETC |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | Switch-Mode 1-Cell Li+ Chargers |
| 中文描述： | 0.1 A BATTERY CHARGE CONTROLLER, 235 kHz SWITCHING FREQ-MAX, QCC12 |
| 封装： | 4 X 4 MM, 0.80 MM HEIGHT, QFN-12 |
| 文件页数： | 1/16页 |
| 文件大小： | 443K |
| 代理商： | MAX1925ETC |
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
evaluation kit is available to speed design.
Applications
Digital Cameras
Self-Charging Battery Packs
PDAs
Cradle Chargers
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
M
Switch-Mode 1-Cell Li+ Chargers
________________________________________________________________
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
Ordering Information
MAX1925
MAX1926
IN
EN
INP
EXT
PGND
INPUT
4.5V TO 12V
LED
CT
CHG
ON
OFF
ACON
THRM
GND
BATT
CS
1-CELL
Li+
BATTERY
Typical Operating Circuit
19-2556; Rev 1; 10/02
EVALUATION KIT
AVAILABLE
PART
TEMP
RANGE
PIN-
PACKAGE
INPUT
CHARGING
RANGE
MAX1925
ETC
-40
°
C to +85
°
C
12 Thin QFN
4mm
x
4mm
4.5V to 6.1V
MAX1926
ETC
-40
°
C to +85
°
C
12 Thin QFN
4mm
x
4mm
4.25V to 12V
12
IN
11
INP
10
EXT
4
5
CT
6
CS
1
2
EN
3
9
8
7
THRM
PGND
GND
BATT
MAX1925
MAX1926
CHG
ACON
THIN QFN
Pin Configuration
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1925ETC+ | 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 |
| MAX1925ETC+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 |
| MAX1925ETC-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 | 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+ | 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 |
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