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1-800-831-4242 TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 SEPTEMBER 2000
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
D
80-m High-Side MOSFET Switch
D
500 mA Continuous Current Per Channel
D
Independent Thermal and Short-Circuit
Protection With Overcurrent Logic Output
D
Operating Range . . . 2.7 V to 5.5 V
D
CMOS- and TTL-Compatible Enable Inputs
D
2.5-ms Typical Rise Time
D
Undervoltage Lockout
D
10
µ
A Maximum Standby Supply Current
for Single and Dual (20
µ
A for Triple and
Quad)
D
Bidirectional Switch
D
Ambient Temperature Range, 0
°
C to 85
°
C
D
ESD Protection
D
UL Listed File No. E169910

description
The TPS2041A through TPS2044A and
TPS2051A through TPS2054A power-distribution
switches are intended for applications where
heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 80-m N-channel MOSFET high-side power switches for power-distribution systems that require multiple power
switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is
provided by an internal charge pump designed to control 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, these devices 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. These power-distribution switches are designed to current limit
at

0.9 A.
TPS201xA
TPS202x
TPS203x
33 m , single
0.2 A 2 A
0.2 A 2 A
0.2 A 2 A
TPS2014
TPS2015
TPS2041
TPS2051
TPS2045
TPS2055
80 m , single
600 mA
1 A
500 mA
500 mA
250 mA
250 mA
GENERAL SWITCH CATALOG
TPS2042
TPS2052
TPS2046
TPS2056
80 m , dual
500 mA
500 mA
250 mA
250 mA
TPS2100/1
260 m IN1 500 mA
IN2 10 mA
OUT
IN1
IN2
TPS2102/3/4/5
IN1 500 mA
IN2 100 mA
1.3 TPS2043
TPS2053
TPS2047
TPS2057
80 m , triple
500 mA
500 mA
250 mA
250 mA
TPS2044
TPS2054
TPS2048
TPS2058
80 m , quad
500 mA
500 mA
250 mA
250 mA
80 m , dual
TPS2080
TPS2081
TPS2082
TPS2090
500 mA
500 mA
500 mA
250 mA
TPS2091
TPS2092
250 mA
250 mA
80 m , quad
TPS2085
TPS2086
TPS2087
TPS2095
500 mA
500 mA
500 mA
250 mA
TPS2096
TPS2097
250 mA
250 mA
Copyright
©
2000, 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.
1
2
3
4
8
7
6
5
GND
IN
IN
EN OUT
OUT
OUT
OC
TPS2041A, TPS2051A
D PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
GND
IN
EN1 EN2 OC1
OUT1
OUT2
OC2
TPS2042A, TPS2052A
D PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GNDA
IN1
EN1 EN2 GNDB
IN2
EN3 EN4 OC1
OUT1
OUT2
OC2
OC3
OUT3
OUT4
OC4
TPS2044A, TPS2054A
D PACKAGE
(TOP VIEW)
All enable inputs are active high for the TPS205xA series.
NC No connect
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
GNDA
IN1
EN1 EN2 GNDB
IN2
EN3 NC
OC1
OUT1
OUT2
OC2
OC3
OUT3
NC
NC
TPS2043A, TPS2053A
D PACKAGE
(TOP VIEW) TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 SEPTEMBER 2000
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
AVAILABLE OPTIONS
RECOMMENDED
MAXIMUM CONTINUOUS
TYPICAL SHORT-CIRCUIT
NUMBER OF
PACKAGED DEVICES
TA
ENABLE
MAXIMUM CONTINUOUS
LOAD CURRENT
(A)
CURRENT LIMIT AT 25
°
C
(A)
NUMBER OF
SWITCHES
SOIC
(D)
Active low
Single
TPS2041AD
Active high
Single
TPS2051AD
Active low
Dual
TPS2042AD
0
°
C to 85
°
C
Active high
0 5
0 9
Dual
TPS2052AD
0
°
C to 85
°
C
Active low
0.5
0.9
Triple
TPS2043AD
Active high
Triple
TPS2053AD
Active low
Quad
TPS2044AD
Active high
Quad
TPS2054AD
The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2041ADR) TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 SEPTEMBER 2000
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
functional block diagrams
TPS2041A
OUT
OC
IN
EN
GND
Current
Limit
Driver
UVLO
Charge
Pump
CS
Thermal
Sense
Power Switch Active high for TPS205xA series
Current sense
TPS2042A
Thermal
Sense
Driver
Current
Limit
Charge
Pump
UVLO
CS Driver
Current
Limit
CS Thermal
Sense
Charge
Pump
Power Switch
GND
EN1
IN
EN2
OC1
OUT1
OUT2
OC2
Active high for TPS205xA series
Current sense TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 SEPTEMBER 2000
4
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
functional block diagrams
TPS2043A
Thermal
Sense
Driver
Current
Limit
Charge
Pump
UVLO
CS Driver
Current
Limit
CS Thermal
Sense
Charge
Pump
Power Switch
GNDA
EN1
IN1
EN2
OC1
OUT1
OUT2
OC2
OUT3
OC3
IN2
EN3
GNDB
Current
Limit
Driver
UVLO
Charge
Pump
CS
Thermal
Sense
Power Switch Active high for TPS205xA series
Current sense TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 SEPTEMBER 2000
5
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
functional block diagrams
Thermal
Sense
Driver
Current
Limit
Charge
Pump
UVLO
CS Driver
Current
Limit
CS Thermal
Sense
Charge
Pump
Power Switch
GNDA
EN1
IN1
EN2
OC1
OUT
1
OUT
2
OC2
Thermal
Sense
Driver
Current
Limit
Charge
Pump
UVLO
CS Driver
Current
Limit
CS Thermal
Sense
Charge
Pump
Power Switch
GNDB
EN3
IN2
EN4
OC3
OUT3
OUT4
OC4
TPS2044A
Active high for TPS205xA series
Current sense TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 SEPTEMBER 2000
6
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Terminal Functions
TPS2041A and TPS2051A
TERMINAL
NAME
NO.
I/O
DESCRIPTION
NAME
TPS2041A
TPS2051A
EN
4 I
Enable input. Logic low turns on power switch.
EN 4
I
Enable input. Logic high turns on power switch.
GND
1
1
I
Ground
IN
2, 3
2, 3
I
Input voltage
OC
5
5
O
Overcurrent. Logic output active low
OUT
6, 7, 8
6, 7, 8
O
Power-switch output
TPS2042A and TPS2052A
TERMINAL
NAME
NO.
I/O
DESCRIPTION
NAME
TPS2042A
TPS2052A
EN1
3 I
Enable input. Logic low turns on power switch, IN-OUT1.
EN2
4 I
Enable input. Logic low turns on power switch, IN-OUT2.
EN1 3
I
Enable input. Logic high turns on power switch, IN-OUT1.
EN2 4
I
Enable input. Logic high turns on power switch, IN-OUT2.
GND
1
1
I
Ground
IN
2
2
I
Input voltage
OC1
8
8
O
Overcurrent. Logic output active low, for power switch, IN-OUT1
OC2
5
5
O
Overcurrent. Logic output active low, for power switch, IN-OUT2
OUT1
7
7
O
Power-switch output
OUT2
6
6
O
Power-switch output TPS2041A, TPS2042A, TPS2043A, TPS2044A
TPS2051A, TPS2052A, TPS2053A, TPS2054A
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

SLVS247 SEPTEMBER 2000
7
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Terminal Functions (Continued)
TPS2043A and TPS2053A
TERMINAL
NAME
NO.
I/O
DESCRIPTION
NAME
TPS2043A
TPS2053A
EN1
3 I
Enable input, logic low turns on power switch, IN1-OUT1.
EN2
4 I
Enable input, logic low turns on power switch, IN1-OUT2.
EN3
7 I
Enable input, logic low turns on power switch, IN2-OUT3.
EN1 3
I
Enable input, logic high turns on power switch, IN1-OUT1.
EN2 4
I
Enable input, logic high turns on power switch, IN1-OUT2.
EN3 7
I
Enable input, logic high turns on power switch, IN2-OUT3.
GNDA
1
1
Ground for IN1 switch and circuitry.
GNDB
5
5
Ground for IN2 switch and circuitry.
IN1
2
2
I
Input voltage
IN2
6
6
I
Input voltage
NC
8, 9, 10
8, 9, 10
No connection
OC1
16
16
O
Overcurrent, logic output active low, IN1-OUT1
OC2
13
13
O
Overcurrent, logic output active low, IN1-OUT2
OC3
12
12
O
Overcurrent, logic output a