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TPS2044

更新时间： 2024-11-07 22:42:03
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德州仪器 - TI 开关
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25页 441K
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QUAD POWER-DISTRIBUTION SWITCHES

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TPS2044 数据手册

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TPS2044, TPS2054  
QUAD POWER-DISTRIBUTION SWITCHES  
SLVS174B – JULY 1998 – REVISED FEBRUARY 1999  
TPS2044  
D PACKAGE  
(TOP VIEW)  
135-mΩ -Maximum (5-V Input) High-Side  
MOSFET Switch  
500 mA Continuous Current per Channel  
GND1  
IN1  
OC1  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
Short-Circuit and Thermal Protection With  
Overcurrent Logic Output  
OUT1  
OUT2  
OC2  
EN1  
EN2  
GND2  
IN2  
Operating Range . . . 2.7-V to 5.5-V  
Logic-Level Enable Input  
OC3  
OUT3  
2.5-ms Typical Rise Time  
EN3  
EN4  
10 OUT4  
Undervoltage Lockout  
9
OC4  
20-µA-Maximum Standby Supply Current  
Bidirectional Switch  
TPS2054  
D PACKAGE  
(TOP VIEW)  
16-pin SOIC Package  
Ambient Temperature Range, –40°C to 85°C  
GND1  
IN1  
OC1  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
2-kV Human-Body-Model, 200-V  
Machine-Model ESD Protection  
OUT1  
OUT2  
OC2  
EN1  
EN2  
GND2  
IN2  
UL Listed – File No. E169910  
OC3  
description  
OUT3  
EN3  
EN4  
10 OUT4  
OC4  
The TPS2044 and TPS2054 quad power-  
distribution switches are intended for applications  
where heavy capacitive loads and short circuits  
9
are likely to be encountered. The TPS2044 and the TPS2054 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 that is compatible with 5-V logic 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 TPS2044 and TPS2054 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 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 TPS2044 and TPS2054 are designed to limit at 0.9-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)  
PACKAGED DEVICES  
SOIC  
TYPICAL SHORT-CIRCUIT  
CURRENT LIMIT AT 25°C  
(A)  
T
A
ENABLE  
†
(D)  
–40°C to 85°C  
–40°C to 85°C  
Active low  
Active high  
0.5  
0.5  
0.9  
0.9  
TPS2044D  
TPS2054D  
†
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2044DR)  
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...25

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TPS2044 替代型号

型号 品牌 替代类型 描述 数据表
TPS2044B TI

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