UDK2547EB Allegro Microsystems Inc, UDK2547EB Datasheet - Page 2

• Manufacturer Part Number: UDK2547EB
• Manufacturer: Allegro Microsystems Inc

Specifications of UDK2547EB

• Operating Temperature (min): -40C
• Operating Temperature Classification: Automotive
• Operating Temperature (max): 125C
• Package Type: PLCC
• Rad Hardened: No
• Lead Free Status / Rohs Status: Not Compliant

CONNECT.
GROUND
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.
FAULT
OUT
OUT
OUT
OUT
NO
V
P
Prefix ‘UDK’ ............... -40 C to +125 C
Prefix ‘UDN’ ................. -20 C to +85 C
Prefix ‘UDQ’ ................. -40 C to +85 C
T
S
1
2
3
OUT
D
4
........................................ See Graph
............................... -55 C to +150 C
1
2
3
4
5
6
7
8
............................................... 25 V
IN
OUT
OUT
CC
or V
.......................... 1.3 A*
............................ 7.0 V
............................ 60 V
EN
...................... 7.0 V
F
(DIP)
................... 40 V
V
CC
A
16
15
14
13
12
11
10
9
Dwg. PP-018A
IN
IN
ENABLE
GROUND
GROUND
IN
IN
SUPPLY
2
1
3
4
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.
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
Diagnostic FAULT Output
Independent Over-Current Protection for Each Driver
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 DRIVER
Low Output-Saturation Voltage
TTL and 5 V CMOS Compatible Inputs
PROTECTED