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參數(shù)資料
| 型號： | TPS2058D |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | QUAD CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES |
| 中文描述： | 四限流配電開關(guān) |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 424K |
| 代理商： | TPS2058D |
TPS2048, TPS2058
QUAD CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
SLVS192 – APRIL 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
features
135-m
-Maximum (5-V Input) High-Side
MOSFET Switch
250 mA Continuous Current per Channel
Independent Short-Circuit and Thermal
Protection With Overcurrent Logic Output
Operating Range . . . 2.7-V to 5.5-V
Logic-Level Enable Input
2.5-ms Typical Rise Time
Undervoltage Lockout
20
μ
A Maximum Standby Supply Current
Bidirectional Switch
Available in 16-pin SOIC Package
Ambient Temperature Range, –40
°
C to 85
°
C
2-kV Human-Body-Model, 200-V
Machine-Model ESD Protection
typical applications
Notebook, Desktop and Palmtop PCs
Monitors, Keyboards, Scanners, and
Printers
Digital Cameras, Phones, and PBXs
Hot-Insertion Applications
description
The TPS2048 and TPS2058 quad power-distribution switches are intended for applications where heavy
capacitive loads and short circuits are likely. These devices incorporate in single packages four 135-m
N-channel MOSFET high-side power switches for power-distribution systems that require multiple power
switches. Each switch is controlled by a logic enable compatible with 5-V and 3-V logic. Gate drive is provided
by an internal charge pump that controls the power-switch rise times and fall times to minimize current surges
during switching. The charge pump, requiring no external components, 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 TPS2048 and TPS2058 limit
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 in overcurrent to prevent
damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal
circuitry ensures the switch remains off until valid input voltage is present.
The TPS2048 and TPS2058 are designed to limit at
0.44-A load. These power-distribution switches are
available in 16-pin small-outline integrated circuit (SOIC) packages and operate over an ambient temperature
range of –40
°
C to 85
°
C.
AVAILABLE OPTIONS
RECOMMENDED MAXIMUM
CONTINUOUS LOAD CURRENT
(A)
TYPICAL SHORT-CIRCUIT
CURRENT LIMIT AT 25
°
C
(A)
PACKAGED DEVICES
SOIC
(D)
TA
ENABLE
–40
°
C to 85
°
C
–40
°
C to 85
°
C
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2048DR)
Active low
0.25
0.44
TPS2048D
Active high
0.25
0.44
TPS2058D
Copyright
1999, Texas Instruments Incorporated
PRODUCTION DATA information is 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.
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.
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16
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9
GND1
IN1
EN1
EN2
GND2
IN2
EN3
EN4
OC1
OUT1
OUT2
OC2
OC3
OUT3
OUT4
OC4
TPS2048
D PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GND1
IN1
EN1
EN2
GND2
IN2
EN3
EN4
OC1
OUT1
OUT2
OC2
OC3
OUT3
OUT4
OC4
TPS2058
D PACKAGE
(TOP VIEW)
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| TPS2058DG4 | 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET 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 |
| TPS2058DR | 功能描述:電源開關(guān) IC - USB Quad 2in 3 out .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 |
| TPS2058DRG4 | 功能描述:電源開關(guān) IC - USB DUAL HI-SIDE MOSFET 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 |
| TPS205X | 制造商:TI 制造商全稱:Texas Instruments 功能描述:USB POWER DISTRIBUTION |
| TPS2060 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CURRENT-LIMITED, POWER-DISTRIBUTION SWITCHES |
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