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參數(shù)資料
| 型號： | UDN2998W |
| 廠商： | Allegro MicroSystems, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | DUAL FULL-BRIDGE MOTOR DRIVER |
| 中文描述： | 雙全橋電機驅動 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 165K |
| 代理商： | UDN2998W |
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
±
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
I
DUAL FULL-BRIDGE
MOTOR DRIVER
Always order by complete part number:
UDN2998W
.
Dwg. No. W-106
D
2
2998
ABSOLUTE MAXIMUM RATINGS
at T
J
≤
+150
°
C
Supply Voltage, V
BB
..........................
50 V
Output Current, I
OUT
(continuous).....
±
2 A
(peak)...........................................
±
3 A
Sink Driver Emitter Voltage, V
E
......
1.5 V
Logic Input Voltage Range,
V
PHASE
or V
ENABLE
.......
-0.3 V to 15 V
Package Power Dissipation,
P
D
.......................................
See Graph
Operating Temperature Range,
T
A
..............................
-20
°
C to +85
°
C
Storage Temperature Range,
T
S
.............................
-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.
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相關代理商/技術參數(shù) |
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|---|---|
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| UDN302L-AE3-R | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:P-CHANNEL 2.5V SPECIFIED POWERTRENCH MOSFET |
| UDN-3610MSERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual Peripheral Driver |
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