ST2054
Current limited
Power distribution switches
Features
■
80mΩ high-side MOSFET switch
■
500mA continuos current per channel
■
independent thermal and short-circuit
protection with overcurrent logic output
■
Operating range from 2.7V to 5.5V
■
CMOS- and TTL-compatible enable inputs
■
10ms OC_N fault blanking
■
2.5ms typical rise time
■
Under voltage lock out
■
20µA maximum standby supply current
■
Ambient temperature range, -40°C to 85°C
■
ESD protection
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Description
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SO-16
The ST2054 power distribution switches is
intended for application where heavy capacitive
loads and short circuits are likely to be
encountered. These devices incorporate 80mΩ
N-channel MOSFET high-side power switches for
power-distribution systems that require multiple
powers 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.
Table 1.
May 2007
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. A 10ms deglitching circuit
provides fault-blanking feature, preventing the
OC_N pin to be asserted during hot-insertion or
short spikes of overcurrent conditions.
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.
Device summary
Part number
Package
Packaging
ST2054BD
SO-16
Tube
(50 parts per tube, 40 tube per box)
ST2054BDR
SO-16
Tape and reel (2500 parts per reel)
Rev 4
1/13
www.st.com
13
Contents
ST2054
Contents
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
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3.2
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2/13
ST2054
1
Block diagram
Block diagram
Figure 1.
Block diagram
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3/13
Pin connections
2
ST2054
Pin connections
Figure 2.
Pin connections (top view)
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Table 2.
4/13
Pin functions
Pln N°
Symbol
Description
1
GNDA
2
IN1
Input voltage
3
EN1
Enable input. Logic high turns on power switch IN-OUT1
4
EN2
Enable input. Logic high turns on power switch IN-OUT2
5
GNDB
6
IN2
Input voltage
7
EN3
Enable input. Logic high turns on power switch IN-OUT3
8
EN4
Enable input. Logic high turns on power switch IN-OUT4
9
OC4
Overcurrent. Logic output active low IN-OUT4
10
OUT4
Power switch output
11
OUT3
Power switch output
12
OC3
Overcurrent. Logic output active low IN-OUT3
13
OC2
Overcurrent. Logic output active low IN-OUT2
14
OUT2
Power switch output
15
OUT1
Power switch output
16
OC1
Ground
Ground
Overcurrent. Logic output active low IN-OUT1
ST2054
Electrical ratings
3
Electrical ratings
3.1
Absolute maximum ratings
Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
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3.2
Recommended operating
conditions
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Table 3.
Absolute maximum ratings
Symbol
VI
VO
VIENX
IO
ESD
TJ
Parameter
Value
Unit
-0.3 to 6
V
-0.3 - (VI + 0.3)
V
-0.3 to 6
V
Input voltage range (1)
Output voltage range
(1)
EN Input voltage range
Continuous output current
Internally Limited
Electrostatic discharge
Junction Operating Temperature
2
kV
-40 to 125
C
1. All voltage are referred to GND
Table 4.
Recommended operating conditions
Symbol
VI
Parameter
Input voltage range (1)
(1)
VO
Output voltage range
IO
Continuous output current (Per switch)
Min
Typ
Max
Unit
2.7
5.5
V
0
5.5
V
0
500
mA
1. All voltage are referred to GND
5/13
Electrical characteristics
4
ST2054
Electrical characteristics
VI = 5.5V, IO = rated current, VIEN = VI, TJ = 25°C, unless otherwise specified. (See Note 1)
Table 5.
Symbol
Power switch electrical characteristics
Parameter
Static drain-source
ON-state resistance
Test conditions
Min
Typ
Max
VI = 5V
IO = 0.5A
80
100
VI = 5V
IO = 0.5A, TJ = 85°C
90
120
VI = 5V
IO = 0.5A, TJ =125°C
100
135
VI = 3.3V IO = 0.5A
90
125
VI = 3.3V IO = 0.5A, TJ = 85°C
110
145
VI = 3.3V IO = 0.5A, TJ = 125°C
120
160
VI = 5.5V
2.5
VI = 2.7V
3
Unit
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RDS(on)
tr
tf
Table 6.
Symbol
Output fall time
VI = 5.5V
ms
RL = 10, CL = 1µF
Parameter
VIL
Low level input
voltage
Test conditions
VI = 2.7V to 5.5V
Min
Typ
Max
2
Unit
V
VI = 4.5V to 5.5V
0.8
VI = 2.7V to 4.5V
0.4
V
0.5
µA
RL= 10Ω CL=100µF
20
ms
RL= 10Ω CL=100µF
40
ms
II
Input current
VIENX = VI or 0V
ton
Turn-on time
toff
Turn-off time
IOS
ms
0.2
Enable Input ENx characteristics
High level input
voltage
Symbol
0.3
VI = 2.7V
VIH
Table 7.
6/13
Output rise time
mΩ
-0.5
Current limit characteristics
Parameter
Short circuit output
current
Test conditions
VI = 5V, OUT connected to GND,
device enabled into short circuit
Min
Typ
Max
Unit
0.7
1
1.3
A
ST2054
Electrical characteristics
Table 8.
Symbol
Supply current characteristics
Parameter
ISOL
Current low level
output
ISOH
Current low high
output
IL
Output leakage
current
Test conditions
Min.
VIENX = 0, No Load,
Typ.
Max.
0.05
2
Unit
µA
VIENX = 0, No Load,
TJ=-40 to 125°C
20
VIENX = VI, No Load,
140
180
µA
VIENX = VI, No Load,
TJ=-40 to 125°C
200
VIENX = 0, Output connected to
GND, TJ=-40 to 125°C
20
µA
Max.
Unit
2.5
V
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Table 9.
Symbol
VIL
VHYS
Table 10.
Symbol
ISINK
Note:
Undervoltage characteristics
Parameter
Test conditions
Low level input
voltage
Min.
Typ.
2
Hysteresis
100
mV
Overcurrent (OC) characteristics
Parameter
Test conditions
Sink current
VO = 5V
VO
Output low voltage
IO = 5mA
IOFF
OFF-state current
VO = 5V VO = 3.3V
TFB
Fault-blanking period
VI = 5.5V, TJ = 25°C
(See Note 2 and 3)
Min.
Typ.
Max.
10
2
Unit
mA
0.5
V
1
µA
10
1
Pulse testing techniques maintain junction temperature close to ambient temperature:
thermal effect must be takes into account separately.
2
Specified by design, not production tested.
3
Guaranteed by design.
ms
7/13
Electrical characteristics
Figure 3.
ST2054
Test circuit
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Figure 4.
8/13
Waveform - propagation delays (f=1MHz; 50% duty cycle)
ST2054
5
Package mechanical data
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com
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9/13
Package mechanical data
ST2054
SO-16 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
A
a1
inch
MAX.
MIN.
TYP.
1.75
0.1
0.25
b
0.35
b1
0.19
a2
0.068
0.004
0.010
0.46
0.013
0.018
0.25
0.007
1.64
C
MAX.
0.063
0.5
0.010
0.019
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c1
45° (typ.)
D
9.8
10
0.385
0.393
E
5.8
6.2
0.228
0.244
e
1.27
e3
8.89
F
3.8
G
L
M
S
0.050
0.350
4.0
0.149
0.157
4.6
5.3
0.181
0.208
0.5
1.27
0.019
0.050
0.62
0.024
8° (max.)
0016020D
10/13
ST2054
Package mechanical data
Tape & Reel SO-16 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
TYP
MAX.
MIN.
330
13.2
TYP.
MAX.
12.992
C
12.8
0.504
D
20.2
0.795
N
60
2.362
0.519
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T
22.4
0.882
Ao
6.45
6.65
0.254
0.262
Bo
10.3
10.5
0.406
0.414
Ko
2.1
2.3
0.082
0.090
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
11/13
Revision history
6
ST2054
Revision history
1
Table 11.
Revision history
Date
Revision
Changes
28-Oct-2004
2
Maturity change
13-Jul-2005
3
Add bullet on pag. 1, add paragraph in the description on pag. 1
and add row TFB on Table 10.
29-May-2007
4
Updated features in cover page, document reformatted
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12/13
ST2054
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Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
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13/13
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