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参数资料
| 型号： | MAX1931EUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | IC SW CUR LIMIT USB 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | USB，外设 |
| 电流 - 电源： | 14µA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 带卷 (TR) |
19-2357; Rev 0; 4/02
Current-Limited Switch for Single USB Port
General Description
The MAX1931 is a current-limited, 60m ? switch with
built-in fault blanking. Its accurate preset current limit of
0.64A to 1.06A makes it ideally suited for USB applica-
tions. The device’s low quiescent supply current (14μA)
and shutdown current (1μA) conserve battery power in
portable applications. The MAX1931 operates with
inputs from 2.7V to 5.5V, making it ideal for both 3V and
5V systems.
A fault signal notifies the microprocessor that the inter-
nal current limit has been reached. A 10ms fault-blank-
ing feature allows momentary faults (such as those
caused when hot-swapping into a capacitive load) to be
ignored, thus preventing false alarms to the host system.
This fault blanking also prevents a fault signal from
being issued when the device is powering up.
Features
o 0.5A Guaranteed Output Current
o Guaranteed 0.75A Short-Circuit Protection
o 10ms Internal Fault-Blanking Timeout
o No Fault Signal During Power-Up
o Thermal Shutdown Protection
o 2.7V to 5.5V Supply Range
o 14μA Supply Current
o Small 10-Pin μMAX Package
Ordering Information
In the MAX1931, an output overcurrent condition causes
the switch to current limit at 0.64A to 1.06A and FAULT
to go low after the 10ms blanking period. When the
PART
MAX1931EUB
TEMP RANGE
-40 ° C to +85 ° C
PIN-PACKAGE
10μMAX
overcurrent condition is removed, FAULT returns to its
high-impedance state.
The MAX1931 has several safety features to ensure that
the USB port is protected. Built-in thermal overload
protection limits power dissipation and junction tempera-
TOP VIEW
Pin Configuration
tures. The device has an accurate internal current-limit-
ing circuitry to protect the input supply against overload.
IN 1
10 OUT
The MAX1931 is available in a space-saving 10-pin
μMAX package.
Applications
USB Ports and Hubs
OUT
IN
OUT
ON
2
3
4
5
MAX1931
9
8
7
6
IN
OUT
FAULT
GND
Notebook Computers
Portable Equipment
Docking Stations
Hot Plug-In Power Supplies
Battery-Charger Circuits
INPUT
μ MAX
Typical Operating Circuit
2.7V TO 5.5V
IN
OUT
OUTPUT
MAX1931
FAULT
OFF
ON
ON
GND
_______________________________________________________________ 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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| MAX1932ETC/GG8 | 功能描述:电流和电力监控器、调节器 RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| MAX1932ETC+ | 功能描述:其他电源管理 0.5% Accurate APD Bias Supply RoHS:否 制造商:Texas Instruments 输出电压范围: 输出电流:4 mA 输入电压范围:3 V to 3.6 V 输入电流: 功率耗散: 工作温度范围:- 40 C to + 110 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-48 封装:Reel |
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