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TPS2046P Datasheet

  • TPS2046P

  • DUAL CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

  • 412.10KB

  • 23頁(yè)

  • TI

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TPS2046, TPS2056
DUAL CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
SLVS183 鈥?APRIL 1999
features
typical applications
D
D
D
D
D
D
D
D
D
D
D
D
135-m鈩?-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
10
碌A(chǔ)
Maximum Standby Supply Current
Bidirectional Switch
Available in 8-pin SOIC and PDIP Packages
Ambient Temperature Range, 鈥?0擄C to 85擄C
2-kV Human-Body-Model, 200-V
Machine-Model ESD Protection
D
D
D
D
Notebook, Desktop and Palmtop PCs
Monitors, Keyboards, Scanners, and
Printers
Digital Cameras, Phones, and PBXs
Hot-Insertion Applications
TPS2046
D OR P PACKAGE
(TOP VIEW)
TPS2056
D OR P PACKAGE
(TOP VIEW)
GND
IN
EN1
EN2
1
2
3
4
8
7
6
5
OC1
OUT1
OUT2
OC2
GND
IN
EN1
EN2
1
2
3
4
8
7
6
5
OC1
OUT1
OUT2
OC2
description
The TPS2046 and TPS2056 dual power-distribution switches are intended for applications where heavy
capacitive loads and short circuits are likely. These devices incorporate in single packages two 135-m鈩?/div>
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 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 TPS2046 and TPS2056 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 TPS2046 and TPS2056 are designed to limit at 0.44-A load. These power distribution switches, available
in 8-pin small-outline integrated circuit (SOIC) and 8-pin plastic dual-in-line packages (PDIP), operate over an
ambient temperature range of 鈥?0擄C to 85擄C.
AVAILABLE OPTIONS
RECOMMENDED
MAXIMUM CONTINUOUS
LOAD CURRENT
(A)
0.25
0.25
TYPICAL
SHORT-CIRCUIT
SHORT CIRCUIT CURRENT
LIMIT AT 25擄C
(A)
0.44
0.44
PACKAGED DEVICES
SOIC
(D)鈥?/div>
TPS2046D
TPS2056D
PDIP
(P)
TPS2046P
TPS2056P
TA
鈥?0擄C to 85擄C
鈥?0擄C to 85擄C
ENABLE
Active low
Active high
鈥?The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2046DR)
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.
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.
Copyright
漏
1999, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

TPS2046P 產(chǎn)品屬性

  • 50

  • 集成電路 (IC)

  • PMIC - 電源分配開(kāi)關(guān)

  • -

  • 高端開(kāi)關(guān)

  • 2

  • 95 毫歐

  • 是

  • 440mA

  • 2.7 V ~ 5.5 V

  • -40°C ~ 85°C

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 8-PDIP

  • 管件

  • TPS2046BEVM-293-ND - TPS2046BEVM-293

  • 296-3405-5

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