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參數(shù)資料
| 型號： | 3625 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | POWERHALL SENSOR/DRIVERS FOR BRUSHLESS DC MOTORS |
| 中文描述： | POWERHALL傳感器/無刷直流電機(jī)的驅(qū)動 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 145K |
| 代理商： | 3625 |
Requiring a minimum of external components, the UDN3625M
and UDN3626M are monolithic ICs that provide single-chip control
and direct drive solutions for many small, single-phase, unipolar
brushless dc motor applications. Integrated into the ICs are a high-
sensitivity Hall-effect sensor, control and commutating logic, a stable
voltage regulator, extensive self and system protective functions, and
two high-current saturated npn outputs. Both ICs include thermal
shutdown, output over-current limiting, and output transient protection/
flyback diodes. The UDN3625M is nominally for 12 V motor applica-
tions while the UDN3626M is better suited to 24 V motors.
Output over-current limiting (relating to startup surge or a locked
rotor condition) and short-circuit protection are provided by an internal
current-sense resistor. The maximum (default) output load current is
typically 1.3 A for the UDN3625M or 600 mA for the UDN3626M,
but may be decreased by user selection of an external low-wattage
resistor.
A separate low-level output provides tachometer capability for
motor speed control or sensing a locked rotor condition. With appro-
priate external logic, pulse-width modulated (PWM) speed control can
be accomplished at the output current adjust pin.
These sensor/drivers are supplied in an 8-pin mini-DlP plastic
package with a copper leadframe for increased package power
handling capability.
P
H
ALL
SENSOR/DRIVERS
FOR BRUSHLESS DC MOTORS
Always order by complete part number, e.g.,
UDN3625M
.
See Maximum Ratings at left.
Supply Voltage, V
CC
. . . . . . . . . .
See Table
Output Current, I
O
. . . . . . . . . . . .
See Table
PWM Current Control Voltage,
V
ADJ
. . . . . . . . . . . . .
See Applications
Magnetic Flux Density, B . . . . . .
Unlimited
Package Power Dissipation,
P
D
. . . . . . . . . . . . . . . . . . . .
See Graph
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . . .
-20
°
C to +85
°
C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . . .
-65
°
C to +150
°
C
Output current rating will be limited by
ambient temperature, supply voltage, and
duty cycle. Under any set of conditions, do
not exceed a junction temperature of
+150
°
C.
UDN3625M
14 V
1.0 A
1.6 A
UDN3626M
26 V
0.45 A
0.75 A
V
CC(MAX)
I
O(CONT)
I
O(PEAK)
ABSOLUTE MAXIMUM RATINGS
D
2
FEATURES
I
900 mA/12 V or 400 mA/24 V Operation
I
Speed-Control (PWM) Capability
I
Locked-Rotor Indication
I
Minimum External Components
I
Over-Current Protected
I
Thermal Protection
I
Enhanced Reliability
I
Reduced Cost
3625
AND
3626
CONTACT FACTORY
for availability
and latest information
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