UDQ2547B ALLEGRO [Allegro MicroSystems], UDQ2547B Datasheet

UDQ2547B

Manufacturer Part Number

UDQ2547B

Description

PROTECTED QUAD POWER DRIVERS

Manufacturer

ALLEGRO [Allegro MicroSystems]

Datasheet

1.UDQ2547B.pdf (8 pages)

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CONNECT.

2547

PROTECTED

QUAD POWER DRIVERS

GROUND

Output Voltage, V

Over-Current Protected Output Voltage,

Output Current, I

FAULT Output Voltage, V

Supply Voltage, V

Input Voltage, V

Package Power Dissipation,

Operating Temperature Range, T

Storage Temperature Range,

*Outputs are current limited at approximately

1.3 A per driver and junction temperature limited

if current in excess of 1.3 A is attempted. See

Circuit Description and Application for further

information.

ABSOLUTE MAXIMUM RATINGS

FAULT

OUT

Prefix ‘UDK’ ............... -40 C to +125 C

Prefix ‘UDN’ ................. -20 C to +85 C

Prefix ‘UDQ’ ................. -40 C to +85 C

OUT

........................................ See Graph

............................... -55 C to +150 C

............................................... 25 V

UDx2547B

at T

OUT

or V

.......................... 1.3 A*

............................ 7.0 V

= 25 C

............................ 60 V

...................... 7.0 V

................... 40 V

Dwg. PP-018A

ENABLE

GROUND

SUPPLY

2547

UDK/UDN/UDQ2547B and UDK/UDN/UDQ2547EB quad power

drivers combine logic gates and high-current bipolar outputs with

complete output protection. Each of the four outputs will sink 600 mA

in the ON state. The outputs have a minimum breakdown voltage

(load dump) of 60 V and a sustaining voltage of 40 V. The inputs are

compatible with TTL and 5 V CMOS logic systems and include internal

pull-down resistors to ensure that the outputs remain OFF if the inputs

are open-circuited.

these devices and is activated at approximately 1.3 A. It protects each

output from short circuits with supply voltages up to 25 V. When a

maximum driver output current is reached, that output drive is reduced

linearly, maintaining a constant load current. If the over-current or

short circuit condition continues, each channel has an independent

thermal limit circuit which will sense the rise in junction temperature

and turn OFF the individual channel that is at fault. Foldback circuitry

decreases the output current if excessive voltage is present across the

output and assists in keeping the device within its SOA (safe operating

area).

tion. If any output is shorted or opened, the diagnostics can signal the

controlling circuitry through a common FAULT pin.

ing incandescent lamps (without warming or limiting resistors). With

the addition of external output clamp diodes, they can be used to drive

inductive loads such as relays, solenoids, or dc stepping motors.

devices are 28-lead power PLCCs for surface-mount applications.

Both packages are of batwing construction to provide for maximum

package power dissipation.

FEATURES

ing temperature range + the basic four-digit part number + a suffix to

indicate package style, e.g., UDK2547EB .

Independent Thermal Protection for Each Driver

600 mA Output Current per Channel

Output SOA Protection

Independent Over-Current Protection for Each Driver

Diagnostic FAULT Output

Providing interface between low-level logic and power loads, the

Over-current protection for each channel has been designed into

Each output also includes diagnostics for increased device protec-

These devices can be used to drive various resistive loads includ-

The suffix ‘B’ devices are 16-pin power DIPs while the suffix ‘EB’

Always order by complete part number: a prefix to indicate operat-

QUAD POWER DRIVERS

Low Output-Saturation Voltage

TTL and 5 V CMOS Compatible Inputs

PROTECTED

Related parts for UDQ2547B

UDQ2547B Summary of contents

Page 1

... Providing interface between low-level logic and power loads, the UDK/UDN/UDQ2547B and UDK/UDN/UDQ2547EB quad power drivers combine logic gates and high-current bipolar outputs with complete output protection. Each of the four outputs will sink 600 mA in the ON state. The outputs have a minimum breakdown voltage ...

Page 2

PROTECTED QUAD POWER DRIVERS SUFFIX 'EB C SUFFIX 'B C 100 25 TEMPERATURE IN C ABLE C/W ...

Page 3

PROTECTED QUAD POWER DRIVERS ELECTRICAL CHARACTERISTICS at T temperature range (prefix ‘UDK’ or ‘UDQ’), V Characteristic Output Leakage Current* Output Sustaining Voltage Output Saturation Voltage Over-Current Limit Input Voltage Input Current Fault Output Leakage Current Fault Output Current Fault ...

Page 4

PROTECTED QUAD POWER DRIVERS NORMAL LAMP IN-RUSH CURRENT NOT TO SCALE SHORT CIRCUIT CURRENT LIMIT THERMAL SHUTDOWN THERMAL HYSTERESIS TIME CIRCUIT DESCRIPTION AND APPLICATION These devices monitor their outputs for open or shorted conditions. Both conditions are sensed by ...

Page 5

... NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Lead spacing tolerance is non-cumulative 3. Lead thickness is measured at seating plane or below. 4. Webbed lead frame. Leads 4, 5, 12, and 13 are internally one piece. UDN2547B and UDQ2547B Dimensions in Inches (controlling dimensions) NOTE 4 0.100 BSC 0 ...

Page 6

PROTECTED QUAD POWER DRIVERS 0.013 0.021 0.219 0.191 0.050 BSC 0.219 0.191 0.165 0.180 0.331 0.533 5.56 4.85 1.27 BSC 5.56 4.85 NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown. 2. Lead spacing tolerance ...

Page 7

PROTECTED QUAD POWER DRIVERS Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the design of its products. The information included herein ...

Page 8

PROTECTED QUAD POWER DRIVERS IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS Output Ratings * 100 250 135 7 300 ...

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