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參數(shù)資料
| 型號： | MAX1931 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Current-Limited Switch for Single USB Port |
| 中文描述： | 限流開關，支持單USB口 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 214K |
| 代理商： | MAX1931 |
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.
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
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-
tures. The device has an accurate internal current-limit-
ing circuitry to protect the input supply against overload.
The MAX1931 is available in a space-saving 10-pin
μMAX package.
Applications
USB Ports and Hubs
Notebook Computers
Portable Equipment
Docking Stations
Hot Plug-In Power Supplies
Battery-Charger Circuits
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
M
Current-Limited Switch for Single USB Port
_______________________________________________________________
Maxim Integrated Products 1
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.
MAX1931
IN
OUTPUT
OUT
INPUT
2.7V TO 5.5V
ON
ON
OFF
GND
FAULT
1
2
3
4
5
10
9
8
7
6
OUT
IN
OUT
FAULT
OUT
IN
OUT
IN
MAX1931
μ
MAX
TOP VIEW
GND
ON
Typical Operating Circuit
19-2357; Rev 0; 4/02
Pin Configuration
Ordering Information
PART
TEMP RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
10μMAX
MAX1931EUB
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1931EUB | 功能描述:電源開關 IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1931EUB+ | 功能描述:電源開關 IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1931EUB+T | 功能描述:電源開關 IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1931EUB-T | 功能描述:電源開關 IC - USB 1A Crnt-Ltd Switch for 2 USB Ports RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX1932ETC | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
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