ST2052_07 STMICROELECTRONICS [STMicroelectronics], ST2052_07 Datasheet

ST2052_07

Manufacturer Part Number

ST2052_07

Description

Current limited Power distribution switches

Manufacturer

STMICROELECTRONICS [STMicroelectronics]

Datasheet

1.ST2052_07.pdf (13 pages)

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Table 1.

Features

■

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 80mW

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.

May 2007

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

10µA maximum standby supply current

Ambient temperature range, -40°C to 85°C

ESD protection

Part number

ST2052BDR

Device summary

ST2052BD

Package

SO-8

Rev 3

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

Power distribution switches

(50 parts per tube, 40 tube per box)

Tape and reel (2500 parts per reel)

SO-8

Current limited

Packaging

Tube

ST2052

www.st.com

1/13

Related parts for ST2052_07

ST2052_07 Summary of contents

Page 1

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 ...

Page 2

Contents Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

ST2052 1 Block diagram Figure 1. Block diagram Block diagram 3/13 ...

Page 4

Pin connections 2 Pin connections Figure 2. Pin connections (top view) Table 2. Pin functions Pln N° 4/13 Symbol GND Ground IN Input voltage EN1 Enable input. Logic high turns on power ...

Page 5

ST2052 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 ...

Page 6

Electrical characteristics 4 Electrical characteristics V = 5.5V rated current Table 5. Power switch electrical characteristics Symbol Parameter Static drain-source R DS(on) ON-state resistance t Output rise time r t Output fall time f Table ...

Page 7

ST2052 Table 8. Supply current characteristics Symbol Parameter Current low level I SOL output Current low high I SOH output Output leakage I L current Table 9. Undervoltage characteristics Symbol Parameter Low level input V IL voltage V Hysteresis HYS ...

Page 8

Electrical characteristics Figure 3. Test circuit Figure 4. Waveform - propagation delays (f=1MHz; 50% duty cycle) 8/13 ST2052 ...

Page 9

ST2052 5 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 ...

Page 10

Package mechanical data DIM ddd 10/13 SO-8 MECHANICAL DATA mm. MIN. TYP MAX. 1.35 1.75 0.10 0.25 1.10 1.65 0.33 0.51 0.19 0.25 4.80 5.00 3.80 4.00 1.27 ...

Page 11

ST2052 DIM Tape & Reel SO-8 MECHANICAL DATA mm. MIN. TYP MAX. 330 12.8 13.2 20.2 60 22.4 8.1 8.5 5.5 5.9 2.1 2.3 3.9 4.1 7.9 8.1 Package mechanical ...

Page 12

Revision history 6 Revision history 1 Table 11. Revision history Date 13-Jul-2005 30-May-2007 12/13 Revision Add bullet on pag. 1, add paragraph in the description on pag and add row T on Table 10 Updated features ...

Page 13

ST2052 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 ...

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