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| 型号： | MAX1641EEE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC SW-MODE CUR SOURCE ADJ 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 功能： | 充电管理 |
| 电源电压： | 5.5 V ~ 26 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
EVALUATION KIT AVAILABLE
AVAILAB
LE
MAX1640/MAX1641
Adjustable-Output, Switch-Mode
Current Sources with Synchronous Rectifier
_______________General Description
The MAX1640/MAX1641 CMOS, adjustable-output,
switch-mode current sources operate from a +5.5V to
+26V input, and are ideal for microprocessor-controlled
battery chargers. Charging current, maximum output
voltage, and pulse-trickle charge are programmed with
external resistors. Programming the off-time modifies
the switching frequency, suppressing undesirable har-
monics in noise-sensitive circuits. The MAX1640’s high-
side current sensing allows the load to connect directly
to ground, eliminating ground-potential errors. The
MAX1641 incorporates a low-side current sense.
The MAX1640/MAX1641 step-down pulse-width-modu-
lation (PWM) controllers use an external P-channel
MOSFET switch and an optional, external N-channel
MOSFET synchronous rectifier for increased efficiency.
An internal low-dropout linear regulator provides power
for the internal reference and circuitry as well as the
____________________________Features
? 95% Efficiency
? +5.5V to +26V Input Supply Range
? 2V to 24V Adjustable-Output Voltage Range
? 100% Maximum Duty Cycle (Low Dropout)
? Up to 500kHz PWM Operation
? Optional Synchronous Rectifier
? 16-Pin QSOP Package
? Current-Sense Accuracy: 2% (MAX1641)
5.3% (MAX1640)
______________Ordering Information
gate drive for the N-channel synchronous rectifier.
The MAX1640/MAX1641 are available in space-saving,
16-pin narrow QSOP packages.
________________________Applications
Battery-Powered Equipment
PART
MAX1640 C/D
MAX1640EEE+
MAX1641 C/D
MAX1641EEE+
TEMP RANGE
0°C to +70°C
-40°C to +85°C
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
Dice*
16 QSOP
Dice*
16 QSOP
Functional Diagrams
Laptop, Notebook, and Palmtop Computers
Handy Terminals
Portable Consumer Products
Cordless Phones
Cellular Phones
PCS Phones
* Dice are specified at T A = +25°C, DC parameters only.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
__________Typical Operating Circuit
V IN = +5.5V TO +26V
Backup Battery Charger
IN
LDOH
__________________ Pin Configuration
R TOFF
D0
D1
TOFF
PDRV
NDRV
P
TOP VIEW
LDOL 1
TOFF 2
+
16 IN
15 LDOH
REF
PGND
CS+
D1 3
D0 4
CC 5
MAX1640
MAX1641
14 PDRV
13 NDRV
12 PGND
SET
MAX1640
CS-
OUT
REF 6
SET 7
TERM 8
11 CS+
10 CS-
9
GND
CC
GND
TERM
LDOL
Functional Diagrams continued at end of data sheet.
Pin Configurations appear at end of data sheet.
QSOP
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-1245; Rev 2; 5/09
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1641EEE+ | 功能描述:电流型 PWM 控制器 Adj-Out Switch Mode Current Source RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX1641EEE+T | 功能描述:电流型 PWM 控制器 Adj-Out Switch Mode Current Source RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX1641EEE-T | 功能描述:电流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| MAX1642EUA | 功能描述:直流/直流开关转换器 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 |
| MAX1642EUA+ | 功能描述:直流/直流开关转换器 Integrated Circuits (ICs) 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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