- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄225219 > SP2526A-1EN/TR 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 PDF資料下載
參數(shù)資料
| 型號(hào)： | SP2526A-1EN/TR |
| 元件分類(lèi)： | 電源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | MS-012AA, NSOIC-8 |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大?。?/td> | 133K |
| 代理商： | SP2526A-1EN/TR |
4
Date: 1/4/06
SP2526A Dual USB High-Side Power Switch
Copyright 2006 Sipex Corporation
Error Flag
An open-drained output of an N-channel
MOSFET, the FLG output is pulled low to
signal the following fault conditions: input
undervoltage, output current limit, and thermal
shutdown.
Current Limit
The current limit threshold is preset internally.
It protects the output MOSFET switches from
damage resulting from undesirable short circuit
conditions or excess inrush current, which is
often encountered during hot plug-in. The low
limit of the current limit threshold of the
SP2526A allows a minimum current of 0.6A
through the MOSFET switches. A current limit
condition will signal the error flag.
Thermal Shutdown
When the chip temperature exceeds 135C for
any reason other than overcurrent fault of either
one of the two MOSFETs, the thermal shut-
down function turns off both MOSFET switches
and signals the error flag. A hysteresis of 10C
prevents the MOSFETs from turning back on
until the chip temperature drops below 125C.
However, if thermal shutdown is triggered by
chip temperature rise resulting from overcurrent
fault condition of either one of the MOSFET
switches, the thermal shutdown function will
only turn off the switch that is in overcurrent
condition and the other switch can still remain
its normal operation. In other words, the ther-
mal shutdown function of the two switches is
independent of each other in the case of
overcurrent fault.
Supply Filtering
A 0.1
F to 1F bypass capacitor from IN to
GND, located near the device, is strongly recom-
mended to control supply transients. Without a
bypass capacitor, an output short may cause
sufficient ringing on the input (from supply lead
inductance) to damage internal control circuitry.
Transient Requirements
USB supports dynamic attachment (hot plug-in)
of peripherals. A current surge is caused by the
input capacitance of downstream device. Ferrite
beads are recommended in series with all power
and ground connector pins. Ferrite beads reduce
EMI and limit the inrush current during hot-
attachment by filtering high-frequency signals.
Short Circuit Transient
Bulk capacitance provides the short-term tran-
sient current needed during a hot-attachment event.
A 33
F,16V tantalum or a 100F,10V electro-
lytic capacitor mounted close to downstream con-
nector each port should provide transient drop
protection
Printed Circuit Layout
The Power circuitry of USB printed circuit boards
requires a customized layout to maximize ther-
mal dissipation and to minimize voltage drop and
EMI.
APPLICATION INFORMATION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP2810T-3.3 | 3.3 V FIXED POSITIVE LDO REGULATOR, PSSO2 |
| SP2815R-5.0 | 5 V FIXED POSITIVE LDO REGULATOR, PSSO2 |
| SP6122CUB-L-2.5 | 2 A SWITCHING CONTROLLER, 780 kHz SWITCHING FREQ-MAX, PDSO8 |
| SP6132CU/L/TR | 2 A SWITCHING CONTROLLER, 360 kHz SWITCHING FREQ-MAX, PDSO10 |
| SP6213EC3-3.3 | 3.3 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO3 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP2526A-2EN | 制造商:Exar Corporation 功能描述: |
| SP2526A-2EN/TR | 制造商:SIPEX 制造商全稱(chēng):Sipex Corporation 功能描述:Dual USB High-Side Power Switch |
| SP2526A-2EN-L | 功能描述:電源開(kāi)關(guān) IC - USB 2-CH Active Low temp -40C to 85C 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 |
| SP2526A-2EN-L | 制造商:Exar Corporation 功能描述:IC USB HIGH SIDE POWER SW 5.5V N8-SOIC |
| SP2526A-2EN-L/TR | 功能描述:電源開(kāi)關(guān) IC - USB 3-5V USB PWR CNTRL SWITCH -40-85C 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。