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參數(shù)資料
| 型號： | TPS2046BDR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 1/29頁 |
| 文件大?。?/td> | 901K |
| 代理商： | TPS2046BDR |
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D-16
D-8
DBV-5
1
FEATURES
APPLICATIONS
EN1
EN3
EN
EN2
NC
OC3
NC
OUT3
TPS2047B
DPACKAGE
(TOP VIEW)
NC
GND
IN
OUT
IN1
IN2
TPS2045B/TPS2055B
DPACKAGE
(TOP VIEW)
TPS2045B/TPS2055B
DBVPACKAGE
(TOP VIEW)
OC
OUT
OC
Allenableinputsareactivehigh
fortheTPS2055B.
(EN)
NC-NoConnection
OC1
OC2
OUT1
OUT2
EN1
IN
EN2
GND
IN
TPS2046B
DPACKAGE
(TOP VIEW)
OC1
OC2
EN
OUT1
OUT2
IN
OUT
DESCRIPTION
SLVS532C – JULY 2004 – REVISED OCTOBER 2007
www.ti.com
CURRENT-LIMITED, POWER-DISTRIBUTION SWITCHES
Heavy Capacitive Loads
70-m High-Side MOSFET
Short-Circuit Protections
250-mA Continuous Current
Thermal and Short-Circuit Protection
Accurate Current Limit (0.3 A min, 0.7 A max)
Operating Range: 2.7 V to 5.5 V
0.6-ms Typical Rise Time
Undervoltage Lockout
Deglitched Fault Report (OC)
No OC Glitch During Power Up
Maximum Standby Supply Current:
1-
μA (Single and Dual) or 2-μA (Triple)
Bidirectional Switch
Ambient Temperature Range: –40°C to 85°C
ESD Protection
UL Pending
The TPS204xB/TPS2055B power-distribution switches are intended for applications where heavy capacitive
loads and short circuits are likely to be encountered. These devices incorporate 70-m
N-channel MOSFET
power switches for power-distribution systems that require multiple power switches in a single package. Each
switch is controlled by a logic-enable input. Gate drive is provided by an internal charge pump designed to
control the power-switch rise times and fall times to minimize current surges during switching. The charge pump
requires no external components and allows operation from supplies as low as 2.7 V.
When the output load exceeds the current-limit threshold or a short is present, the device limits the output current
to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When
continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction
temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal
shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that the switch remains
off until valid input voltage is present. This power-distribution switch is designed to set current limit at 0.5 A
typically.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS
OTHERWISE
NOTED
this
document
contains
Copyright 2004–2007, Texas Instruments Incorporated
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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| TPS2046DR | 功能描述:電源開關(guān) IC - USB Dual 1in 2out .7A 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 |
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