ST2052BD STMICROELECTRONICS [STMicroelectronics], ST2052BD Datasheet

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ST2052BD

Manufacturer Part Number
ST2052BD
Description
CURRENT LIMITED POWER DISTRIBUTION SWITCHES
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet

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DESCRIPTION
The ST2052 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
Table 1: Order Codes
July 2005
ST2052BDR
80mΩ HIGH-SIDE MOSFET SWITCH
500mA CONTINUOUS 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
10 ms OC_N FAULT BLANKING
2.5ms TYPICAL RISE TIME
UNDERVOLTAGE LOCKOUT
10µA MAXIMUM STANDBY SUPPLY
CURRENT
AMBIENT TEMPERATURE RANGE, 0°C TO
85°C
ESD PROTECTION
ST2052BD
Type
Temperature
-40 to 85 °C
-40 to 85 °C
Range
SO-8 (Tape & Reel)
POWER DISTRIBUTION SWITCHES
SO-8 (Tube)
Package
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
CURRENT LIMITED
50parts per tube / 40tube per box
2500 parts per reel
SOP
Comments
Rev. 2
ST2052
1/9

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ST2052BD Summary of contents

Page 1

... The charge pump requires no external Table 1: Order Codes Temperature Type Range ST2052BD - °C ST2052BDR - °C July 2005 POWER DISTRIBUTION SWITCHES 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 ...

Page 2

ST2052 Figure 1: Pin Configuration Table 3: Absolute Maximum Ratings Symbol V Input Voltage Range (Note Output Voltage Range (Note Input Voltage Range IENX I Continuous Output Current O ESD Electrostatic Discharge T Operating ...

Page 3

Figure 2: Block Diagram Table 5: Power Switch Electrical Characteristics (V unless otherwise specified.) (See Note 1) Symbol Parameter R Static Drain-Source DS(ON) ON-State Resistance t Output Rise Time r t Output Fall Time f = 5.5V ...

Page 4

ST2052 Table 6: Enable Input ENx Characteristics (V otherwise specified.) (See Note 1) Symbol Parameter V High level Input Voltage IH V Low level Input Voltage IL I Input Current I t Turn-on Time on t Turn-off Time off Table ...

Page 5

Figure 3: Test Circuit Table 11: Waveform: Propagation Delays (f=1MHz; 50% duty cycle) ST2052 5/9 ...

Page 6

ST2052 DIM. MIN. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd 6/9 SO-8 MECHANICAL DATA mm. TYP MAX. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 ...

Page 7

Tape & Reel SO-8 MECHANICAL DATA DIM. MIN 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 mm. TYP MAX. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 5.9 0.216 2.3 ...

Page 8

ST2052 Table 12: Revision History Date Revision 13-Jul-2005 2 8/9 Description of Changes Add bullet on pag. 1, add paragraph in the description on pag. 1 and add row T on Table 10. FB ...

Page 9

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. ...

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