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부품번호 2559 기능
기능 PROTECTED QUAD POWER DRIVER
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2559 데이터시트, 핀배열, 회로
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 TA = 25°C
Output Voltage, VOUT . . . . . . . . . 60 V
Over-Current Protected Output Voltage,
VOUT . . . . . . . . . . . . . . . . . . . 25 V
Output Current, IOUT . . . . . . . . . 1.0 A*
Supply Voltage, VCC . . . . . . . . . . 7.0 V
Input Voltage, VIN or VEN . . . . . . 7.0 V
Package Power Dissipation,
PD . . . . . . . . . . . . . . . . See Graph
Operating Temperature Range, TA
Prefix ‘UDK’ . . . . -40°C to +125°C
Prefix ‘UDN’ . . . . . -20°C to +85°C
Prefix ‘UDQ’ . . . . . -40°C to +85°C
Storage Temperature Range,
TS . . . . . . . . . . . . -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
I 700 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 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 .




2559 pdf, 반도체, 판매, 대치품
2559
PROTECTED
QUAD POWER DRIVER
TYPICAL OUTPUT
CHARACTERISTIC
TJ < 150°C
NOT TO SCALE
T = 165°C
J
JUNCTION
TEMP. LIMIT
V OUT(SAT)
THERMAL
GRADIENT
SENSING
I TRIP
OUTPUT CURRENT, I OUT
Dwg. GP-013
TYPICAL OUTPUT BEHAVIOR
NORMAL LAMP IN-RUSH CURRENT
NOT TO SCALE
THERMAL GRADIENT SENSING
CURRENT LIMIT
ITRIP
0
TIME
Dwg. WP-008
CIRCUIT DESCRIPTION AND APPLICATION
INCANDESCENT LAMP DRIVER
High incandescent lamp turn-ON/in-rush currents can contribute to
poor lamp reliability and destroy semiconductor lamp drivers. Warm-
ing or current-limiting resistors protect both driver and lamp but use
significant power either when the lamp is OFF or when the lamp is
ON, respectively. Lamps with steady-state current ratings up to 700
mA can be driven by these devices without the need for warming
(parallel) or current-limiting (series) resistors.
When an incandescent lamp is initially turned ON, the cold fila-
ment is at minimum resistance and would normally allow a 10x to 12x
in-rush current. With these drivers, during turn-ON, the high in-rush
current is sensed by the internal low-value sense resistor. Drive current
to the output stage is then diverted by the shunting transistor, and the
load current is momentarily limited to approximately 1.0 A. During
this short transition period, the output current is reduced to a value
dependent on supply voltage and filament resistance. During lamp
warmup, the filament resistance increases to its maximum value, the
output stage goes into saturation and applies maximum rated voltage to
the lamp.
INDUCTIVE LOAD DRIVER
Bifilar (unipolar) stepper motors, relays, or solenoids can be driven
directly. The internal flyback diodes prevent damage to the output transistors
by suppressing the high-voltage spikes that occur when turning OFF an
inductive load.
For rapid current decay (fast turn-OFF speeds), the use of Zener diodes
will raise the flyback voltage and inprove performance. However, the peak
voltage must not exceed the specified minimum sustaining voltage (VSUPPLY +
VZ + VF VOUT(SUS)).
FAULT CONDITIONS
In the event of a shorted load, the load current will attempt to
increase. As described above, the drive current to the affected output
stage is reduced, causing the output stage to go linear, limiting the peak
output current to approximately 1 A. As the power dissipation of that
output stage increases, a thermal gradient sensing circuit will become
operational, further decreasing the drive current to the affected output
stage and reducing the output current to a value dependent on supply
voltage and load resistance.
Continuous or multiple overload conditions causing the chip
temperature to reach approximately 165°C will result in an additional
reduction in output current to maintain a safe level.
If the fault condition is corrected, the output stage will return to its
normal saturated condition.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000

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2559 전자부품, 판매, 대치품
2559
PROTECTED
QUAD POWER DRIVER
UDx2559LB
Dimensions in Inches
(for reference only)
16 9
0.0125
0.0091
0.2992
0.2914
0.020 1 2 3
0.013
0.4133
0.3977
0.050
BSC
0.419
0.394
0.050
0.016
0° TO 8°
0.0926
0.1043
0.0040 MIN.
16
Dimensions in Millimeters
(controlling dimensions)
9
Dwg. MA-008-17A in
0.32
0.23
7.60
7.40
0.51 1 2 3
0.33 10.50
10.10
1.27
BSC
10.65
10.00
1.27
0.40
0° TO 8°
2.65
2.35
0.10 MIN.
NOTES: 1. Exact body and lead configuration at vendors option within limits shown.
2. Lead spacing tolerance is non-cumulative
3. Webbed lead frame. Leads 4, 5, 12, and 13 are internally one piece.
www.allegromicro.com
Dwg. MA-008-17A mm

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