UDN2998 Datasheet PDF - Allegro
| Part Number | UDN2998 | |
| Description | DUAL FULL-BRIDGE MOTOR DRIVER | |
| Manufacturers | Allegro | |
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2998
Dwg. No. W-106
ABSOLUTE MAXIMUM RATINGS
at TJ ≤ +150°C
Supply Voltage, VBB .......................... 50 V
Output Current, IOUT (continuous) ..... ±2 A
(peak) ........................................... ±3 A
Sink Driver Emitter Voltage, VE ...... 1.5 V
Logic Input Voltage Range,
VPHASE or VENABLE ....... -0.3 V to 15 V
Package Power Dissipation,
PD ....................................... See Graph
Operating Temperature Range,
TA .............................. -20°C to +85°C
Storage Temperature Range,
TS ............................. -55°C to +150°C
NOTE: Output current rating may be limited
by chopping frequency, ambient tempera-
ture, air flow, or heat sinking. Under any set
of conditions, do not exceed the specified
current rating or a junction temperature of
+150°C.
DUAL FULL-BRIDGE
MOTOR DRIVER
As an interface between low-level logic and solenoids, dc (brush)
motors, or stepper motors, the UDN2998W dual full-bridge driver will
operate inductive loads up to 50 V with continuous output currents of
up to 2 A per bridge or peak (start-up) currents to 3 A. The control
inputs are compatible with TTL, DTL, and 5 V CMOS logic. Except
for a common supply voltage and thermal shutdown, the two drivers in
each package are completely independent.
For external PWM control, an Output Enable for each bridge
circuit is provided and the sink driver emitters are pinned out for
connection to external current-sensing resistors. The chopper drive
mode is characterized by low power dissipation levels and maximum
efficiency. A PHASE input to each bridge determines load-current
direction.
Extensive circuit protection is provided on-chip. Both ground-
clamp and flyback diodes for each bridge are provided. A thermal
shutdown circuit disables the load drive if chip temperature rating
(package power dissipation) is exceeded. Internally-generated delays
provide crossover-current protection.
The UDN2998W is packaged in a 12-pin single in-line power-tab
package for high power capabilities. Driving either of the bridges at
the full 2 A dc rating requires the use of an external heat sink. The tab
is at ground potential and needs no insulation.
FEATURES
I ±3 A Peak Output Current
I Output Voltage to 50 V
I Integral Output Suppression Diodes
I Output Current Sensing
I TTL/CMOS Compatible Inputs
I Internal Thermal Shutdown Circuitry
I Crossover-Current Protected
I Automotive Capable
Always order by complete part number: UDN2998W .
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2998
DUAL FULL-BRIDGE
MOTOR DRIVER
0.020
INDEX
AREA
0.065 1
0.035
Dimensions in Inches
(controlling dimensions)
1.260
1.240
0.775
0.765
0.180
MAX
0.245
0.225
0.155 ø
0.145
0.140
0.365
0.570
0.540
0.055
0.045
0.135
0.100
0.290 MIN
0.030
0.020
12
0.100
±0.010
0.023
0.018
0.080
0.070
Dwg. MP-007 in
NOTES: 1. Lead thickness is measured at seating plane or below.
2. Lead spacing tolerance is non-cumulative.
3. Exact body and lead configuration at vendor’s option within limits shown.
4. Lead gauge plane is 0.030” below seating plane.
5. Supplied in standard sticks/tubes of 15 devices.
www.allegromicro.com
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| Information | Total 6 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ UDN2998.PDF Datasheet ] | |
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