900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






etcTI

TPS2056 Datasheet Preview

TPS2056 Datasheet

DUAL CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

No Preview Available !

TPS2046, TPS2056
DUAL CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
features
D 135-m-Maximum (5-V Input) High-Side
MOSFET Switch
D 250 mA Continuous Current per Channel
D Independent Short-Circuit and Thermal
Protection With Overcurrent Logic Output
D Operating Range . . . 2.7-V to 5.5-V
D Logic-Level Enable Input
D 2.5-ms Typical Rise Time
D Undervoltage Lockout
D 10 µA Maximum Standby Supply Current
D Bidirectional Switch
D Available in 8-pin SOIC and PDIP Packages
D Ambient Temperature Range, –40°C to 85°C
D 2-kV Human-Body-Model, 200-V
Machine-Model ESD Protection
SLVS183 – APRIL 1999
typical applications
D Notebook, Desktop and Palmtop PCs
D Monitors, Keyboards, Scanners, and
Printers
D Digital Cameras, Phones, and PBXs
D Hot-Insertion Applications
TPS2046
D OR P PACKAGE
(TOP VIEW)
GND
IN
EN1
EN2
1
2
3
4
8 OC1
7 OUT1
6 OUT2
5 OC2
TPS2056
D OR P PACKAGE
(TOP VIEW)
GND
IN
EN1
EN2
1
2
3
4
8 OC1
7 OUT1
6 OUT2
5 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
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 –40°C to 85°C.
AVAILABLE OPTIONS
RECOMMENDED
TYPICAL
PACKAGED DEVICES
MAXIMUM CONTINUOUS SHORT-CIRCUIT CURRENT
TA
ENABLE
LOAD CURRENT
LIMIT AT 25°C
SOIC
PDIP
(A) (A) (D)† (P)
–40°C to 85°C Active low
0.25
0.44 TPS2046D
–40°C to 85°C Active high
0.25
0.44 TPS2056D
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2046DR)
TPS2046P
TPS2056P
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.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1999, Texas Instruments Incorporated
1




etcTI

TPS2056 Datasheet Preview

TPS2056 Datasheet

DUAL CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

No Preview Available !

TPS2046, TPS2056
DUAL CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
SLVS183 – APRIL 1999
TPS2046 functional block diagram
GND
EN1
Charge
Pump
UVLO
IN
Charge
Pump
Current sense
EN2
Thermal
Sense
Driver
Current
Limit
CS
Power Switch
CS
Driver
Current
Limit
Thermal
Sense
OC1
OUT1
OUT2
OC2
NAME
EN1
EN2
EN1
EN2
GND
IN
OC1
OC2
OUT1
OUT2
TERMINAL
NO.
D OR P
TPS2046 TPS2056
3–
4–
–3
–4
11
22
88
55
77
66
Terminal Functions
I/O DESCRIPTION
I Enable input. Logic low turns on power switch, IN-OUT1.
I Enable input. Logic low turns on power switch, IN-OUT2.
I Enable input. Logic high turns on power switch, IN-OUT1.
I Enable input. Logic high turns on power switch, IN-OUT2.
I Ground
I Input voltage
O Overcurrent. Logic output active low, for power switch, IN-OUT1
O Overcurrent. Logic output active low, for power switch, IN-OUT2
O Power-switch output
O Power-switch output
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number TPS2056
Description DUAL CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
Maker etcTI
Total Page 25 Pages
PDF Download

TPS2056 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 TPS2051 POWER-DISTRIBUTION SWITCHES
etcTI
2 TPS2051A CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
etcTI
3 TPS2051B Power-Distribution Switches
etcTI
4 TPS2051B-Q1 Current-Limited Power-Distribution Switches
etcTI
5 TPS2051C Power-Distribution Switches
etcTI
6 TPS2052 DUAL POWER-DISTRIBUTION SWITCHES
etcTI
7 TPS2052A CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
etcTI
8 TPS2052B Power-Distribution Switches
etcTI
9 TPS2052C Power-Distribution Switches
etcTI





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy