2549 Datasheet, PDF (1/8 Pages) Allegro MicroSystems – PROTECTED QUAD POWER DRIVER

2549
UDx2549B
OUT₄ 1
K2
OUT₃ ³
GROUND ⁴
GROUND 5
OUT₂ 6
K7
OUT₁ 8
16 IN₄
15 IN₃
14 ENABLE
13 GROUND
12 GROUND
11 V _CC
10 IN ₂
9 IN ₁
Dwg. PP-017-1
ABSOLUTE MAXIMUM RATINGS
at T_A = 25°C
Output Voltage, V_OUT . . . . . . . . . . . . . 60 V
Over-Current Protected Output Voltage,
V_OUT . . . . . . . . . . . . . . . . . . . . . . . 25 V
Output Current, I_OUT . . . . . . . . . . . . . 1.0 A*
Supply Voltage, V_CC . . . . . . . . . . . . . . 7.0 V
Input Voltage, V_IN or V_EN . . . . . . . . . . 7.0 V
Package Power Dissipation,
P_D . . . . . . . . . . . . . . . . . . . . See Graph
Operating Temperature Range, T_A
Prefix ‘UDK’ . . . . . . . -40°C to +125°C
Prefix ‘UDN’ . . . . . . . . -20°C to +85°C
Prefix ‘UDQ’ . . . . . . . . -40°C to +85°C
Storage Temperature Range,
T_S . . . . . . . . . . . . . . . -55°C to +150°C
*Outputs are peak current limited at approximately
1.0 A per driver. See Circuit Description and
Applications for further information.
PROTECTED
QUAD POWER DRIVER
Providing improved output current limiting, the UDK/UDN/
UDQ2549B and UDK/UDN/UDQ2549EB quad power drivers combine
AND 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.
Over-current protection for each channel has been designed into
these devices and is activated at approximately 1 A. It protects each
output from short circuits with supply voltages up to 25 V. When an
output current trip point is reached, that output stage is driven linearly
resulting in a reduced output current level. If an over-current or short
circuit condition continues, the thermal limiting circuits will first sense
the rise in junction temperature and then the rise in chip temperature,
further decreasing the output current. Under worst-case conditions,
the six devices in this family will tolerate short-circuits on all outputs,
simultaneously.
These devices can be used to drive various loads including
incandescent lamps (without warming or limiting resistors) or inductive
loads such as relays, solenoids, or dc stepping motors.
The suffix ‘B’ devices are 16-pin power DIPs while the suffix ‘EB’
devices are 28-lead power PLCCs for surface-mount applications.
Both packages are of batwing construction to provide for maximum
package power dissipation.
FEATURES
I 600 mA Output Current per Channel
I Independent Over-Current Protection for Each Driver
I Thermal Protection for Device and Each Driver
I Low Output-Saturation Voltage
I Integral Output Flyback Diodes
I TTL and 5 V CMOS Compatible Inputs
I Pin-Compatible With UDN2543B/EB
Always order by complete part number: a prefix to indicate operating
temperature range + the basic four-digit part number + a suffix to
indicate package style, e.g., UDK2549EB .