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STMicroelectronics Electronic Components Datasheet

ST2054 Datasheet

CURRENT LIMITED POWER DISTRIBUTION SWITCHES

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ST2054 pdf
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ST2054
CURRENT LIMITED
POWER DISTRIBUTION SWITCHES
I 80mHIGH-SIDE MOSFET SWITCH
I 500mA CONTINUOUS CURRENT PER
CHANNEL
I INDEPENDENT THERMAL AND
SHORT-CIRCUIT PROTECTION WITH
OVERCURRENT LOGIC OUTPUT
I OPERATING RANGE FROM 2.7V TO 5.5V
I CMOS- AND TTL-COMPATIBLE ENABLE
INPUTS
I 10 ms OC_N FAULT BLANKING
I 2.5ms TYPICAL RISE TIME
I UNDERVOLTAGE LOCKOUT
I 20µA MAXIMUM STANDBY SUPPLY
CURRENT
I AMBIENT TEMPERATURE RANGE, 0°C TO
85°C
I ESD PROTECTION
DESCRIPTION
The ST2054 power distribution switches is
intended for application where heavy capacitive
loads and short circuits are likely to be
encountered. These devices incorporate 80m
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
Table 1: Order Codes
SOP
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. 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.
Type
ST2054BD
ST2054BDR
Temperature
Range
-40 to 85 °C
-40 to 85 °C
Package
SO-16 (Tube)
SO-16 (Tape & Reel)
Comments
50parts per tube / 40tube per box
2500 parts per reel
July 2005
Rev. 3
1/9


STMicroelectronics Electronic Components Datasheet

ST2054 Datasheet

CURRENT LIMITED POWER DISTRIBUTION SWITCHES

No Preview Available !

ST2054 pdf
ST2054
Figure 1: Pin Configuration
Table 2: Pin Description
Table 3: Absolute Maximum Ratings
Pln N°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
GNDA
IN1
EN1
EN2
GNDB
IN2
EN3
EN4
OC4
OUT4
OUT3
OC3
OC2
OUT2
OUT1
OC1
Name And Function
Ground
Input Voltage
Enable Input. Logic High Turns
On Power Switch IN-OUT1
Enable Input. Logic High Turns
On Power Switch IN-OUT2
Ground
Input Voltage
Enable Input. Logic High Turns
On Power Switch IN-OUT3
Enable Input. Logic High Turns
On Power Switch IN-OUT4
Overcurrent. Logic Output
Active Low IN-OUT4
Power Switch Output
Power Switch Output
Overcurrent. Logic Output
Active Low IN-OUT3
Overcurrent. Logic Output
Active Low IN-OUT2
Power Switch Output
Power Switch Output
Overcurrent. Logic Output
Active Low IN-OUT1
Symbol
VI
VO
VIENX
IO
ESD
TJ
Parameter
Input Voltage Range (Note 1)
Output Voltage Range (Note 1)
Input Voltage Range
Continuous Output Current
Electrostatic Discharge
Operating Junction Temperature
Value
-0.3 to 6
-0.3 to (VI +0.3)
-0.3 to 6
Internally Limited
2
-40 to 125
Unit
V
V
V
kV
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
Note1: All voltage are referred to GND
Table 4: Recommended Operating Condition
Symbol
VI
VO
IO
Parameter
Input Voltage Range (Note 1)
Output Voltage Range (Note 1)
Continuous Output Current (Per Switch)
Min.
2.7
0
0
Typ.
Max.
5.5
5.5
500
Unit
V
V
mA
2/9


Part Number ST2054
Description CURRENT LIMITED POWER DISTRIBUTION SWITCHES
Maker ST Microelectronics
Total Page 9 Pages
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