A2559 Datasheet, PDF (1/8 Pages) Allegro MicroSystems – PROTECTED QUAD POWER DRIVER

2559
UDx2559LB
1
16
UDx2559B
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 Application for
further information.
PROTECTED
QUAD POWER DRIVER
Providing improved output current limiting, the UDK, UDN, and
UDQ2559B, EB, and LB quad power drivers combine AND logic
gates and high-current bipolar outputs with complete output protection.
Each of the four outputs will sink 700 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,
these devices will tolerate short circuits on all outputs, simultaneously.
These devices can be used to drive various loads including incan-
descent 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, the suffix ‘EB’
devices are 28-lead power PLCCs and suffix ‘LB’ devices are 16-lead
power SOICs for surface-mount applications. All three packages are
of batwing construction to provide for maximum package power
dissipation.
FEATURES
s 700 mA Output Current per Channel
s Independent Over-Current Protection for Each Driver
s Thermal Protection for Device and Each Driver
s Low Output-Saturation Voltage
s Integral Output Flyback Diodes
s TTL and 5 V CMOS Compatible Inputs
s Pin-Compatible With UDQ2543B/EB and UDK2549B/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., UDK2559LB .