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TPS2048

更新时间： 2024-11-09 22:42:03
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德州仪器 - TI 开关
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24页 425K
描述
QUAD CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

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TPS2048 数据手册

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TPS2048, TPS2058  
QUAD CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES  
SLVS192 – APRIL 1999  
features  
typical applications  
135-mΩ -Maximum (5-V Input) High-Side  
MOSFET Switch  
Notebook, Desktop and Palmtop PCs  
Monitors, Keyboards, Scanners, and  
Printers  
250 mA Continuous Current per Channel  
Independent Short-Circuit and Thermal  
Protection With Overcurrent Logic Output  
Digital Cameras, Phones, and PBXs  
Hot-Insertion Applications  
Operating Range . . . 2.7-V to 5.5-V  
Logic-Level Enable Input  
TPS2048  
D PACKAGE  
(TOP VIEW)  
TPS2058  
D PACKAGE  
(TOP VIEW)  
2.5-ms Typical Rise Time  
Undervoltage Lockout  
GND1  
IN1  
OC1  
GND1  
IN1  
OC1  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
20 µA Maximum Standby Supply Current  
Bidirectional Switch  
OUT1  
OUT2  
OC2  
OUT1  
OUT2  
OC2  
EN1  
EN2  
GND2  
IN2  
EN1  
EN2  
GND2  
IN2  
Available in 16-pin SOIC Package  
Ambient Temperature Range, –40°C to 85°C  
OC3  
OC3  
OUT3  
OUT3  
2-kV Human-Body-Model, 200-V  
Machine-Model ESD Protection  
EN3  
EN4  
10 OUT4  
OC4  
EN3  
EN4  
10 OUT4  
9
9
OC4  
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-mΩ  
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  
causingthejunctiontemperaturetorise, athermalprotectioncircuitshutsofftheswitchinovercurrenttoprevent  
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  
PACKAGED DEVICES  
SOIC  
RECOMMENDED MAXIMUM  
CONTINUOUS LOAD CURRENT  
(A)  
TYPICAL SHORT-CIRCUIT  
CURRENT LIMIT AT 25°C  
(A)  
T
A
ENABLE  
†
(D)  
–40°C to 85°C Active low  
–40°C to 85°C Active high  
0.25  
0.25  
0.44  
0.44  
TPS2048D  
TPS2058D  
†
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2048DR)  
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.  
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.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...24

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TPS2048DG4 TI

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 		0.44A 4 CHANNEL, BUF OR INV BASED PRPHL DRVR, PDSO16, GREEN, PLASTIC, SOIC-16
TPS2048DR TI

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 		0.44A 4 CHANNEL, BUF OR INV BASED PRPHL DRVR, PDSO16, GREEN, PLASTIC, SOIC-16
TPS2048DRG4 TI

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 		0.44A 4 CHANNEL, BUF OR INV BASED PRPHL DRVR, PDSO16, GREEN, PLASTIC, SOIC-16
TPS2049 TI

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 		SINGLE-CHANNEL 100 mA POWER SWITCH

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