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參數(shù)資料
| 型號： | MAX1838EEE |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Dual USB Switch with Fault Blanking and Autoreset |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16 |
| 封裝： | 0.150 INCH, 0.025 INCH PTICH, QSOP-16 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 639K |
| 代理商： | MAX1838EEE |
General Description
The MAX1838 is a dual, current-limited USB switch with
auxiliary input supply. Each switch meets all IEC speci-
fications for USB ports and is guaranteed to supply
500mA from either of two input supplies. A control pin
selects the power source from either the main or auxil-
iary supply.
The MAX1838 has multiple protection features, includ-
ing independent thermal-shutdown on each channel to
limit junction temperature in case of a prolonged short
or overload condition. The device has accurate internal
current-limit and reverse-current protection to safe-
guard the input supply against overload. When pow-
ered from the auxiliary supply, the current limit on each
channel is set independently with an external resistor.
An autoreset feature latches the switch off if the output
is shorted, thereby saving system power. When the
short is removed, the switch automatically turns back
on. Independent fault signals (
FAULTA
and
FAULTB
)
notify the microprocessor (μP) that the internal current
limit has been reached. A 20ms fault-blanking feature
prevents the MAX1838 from issuing false alarms to the
host during power-up or when hot-swapping into a
capacitive load.
The MAX1838 is available in a space-saving 16-pin
QSOP. For other USB current-limited switches, refer to
the MAX1693, MAX1694, MAX1812, and MAX1823.
Applications
Desktops
Notebook Computers
USB Ports
Docking Stations
Features
o
Dual USB Switch with Auxiliary Input
o
Autoreset from Fault Condition
o
Guaranteed 500mA Load per Channel
o
Programmable Current Limits on Auxiliary Inputs
o
Reverse Current Protection
o
Thermal Overload Protection
o
Built-In 20ms Fault-Blanking
o
4V to 5.5V Range
o
Independent FAULT Indicator Outputs
o
UL Listing Pending
M
Dual USB Switch with Fault Blanking
and Autoreset
________________________________________________________________
Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
GND
FAULTA
ADJA
OUTA2
OUTA1
OUTB2
OUTB1
ADJB
FAULTB
TOP VIEW
MAX1838
QSOP
SEL
AUXA
AUXB
INA
INB
ON
GND
Pin Configuration
Ordering Information
19-2033; Rev 0; 4/01
PART
TEMP. RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
16 QSOP
MAX1838EEE
FAULTB
FAULTA
OUTB
OUTA
ADJB
ADJA
AUXA
AUXB
INA
INB
SEL
ON
GND
AUX
IN
OUTB
OUTA
10
μ
F
MAX1838
Typical Operating Circuit
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.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1838EEE+ | 功能描述:電源開關(guān) IC - USB Dual USB Switch w/Fault Blank 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 |
| MAX1838EEE+T | 功能描述:電源開關(guān) IC - USB Dual USB Switch w/Fault Blank 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 |
| MAX1838EEE-T | 功能描述:電源開關(guān) IC - USB Dual USB Switch w/Fault Blank 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 |
| MAX1839EEP | 功能描述:顯示驅(qū)動器和控制器 RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
| MAX1839EEP+ | 功能描述:顯示驅(qū)動器和控制器 CCFL Backlight Controller RoHS:否 制造商:Panasonic Electronic Components 工作電源電壓:2.7 V to 5.5 V 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Reel |
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