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A3906SESTR-T Datasheet

  • A3906SESTR-T

  • Low Voltage Stepper and Single/Dual DC Motor Driver

  • 10頁

  • ALLEGRO   ALLEGRO

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A3906
Low Voltage Stepper and Single/Dual DC Motor Driver
Features and Benefits
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2.5 to 9 V operation
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Internal PWM current limit control
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Synchronous rectification for reduced power dissipation
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Peak current output flag
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Undervoltage lockout
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Low R
DS(on)
outputs
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Small package
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Brake mode for DC motors
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Sleep function
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Crossover-current protection
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Thermal shutdown
Description
Designed for pulse width modulated (PWM) control of low
voltage stepper motors, and single and dual DC motors, the
A3906 is capable of output currents up to 1 A per channel and
operating voltages from 2.5 to 9 V.
The A3906 has an internal fixed off-time PWM timer that
sets a peak current based on the selection of a current sense
resistor. An overcurrent output flag is provided that notifies
the user when the current in the motor winding reaches the
peak current determined by the sense resistor. The fault output
does not affect driver operation.
The A3906 is provided in a 20-contact, 4 mm 脳 4 mm, 0.75 mm
nominal overall height QFN, with exposed pad for enhanced
thermal dissipation. It is lead (Pb) free, with 100% matte tin
leadframe plating.
Applications include the following:
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Digital still cameras (DSC)
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Cell phone cameras
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USB powered devices
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Battery powered devices
Approximate size
Package: 20-contact QFN (suffix ES)
Typical Applications
0.1
渭F
CP1
CP2
CP3
0.1
渭F
CP4
VCP
0.1
渭F
SLEEP
VBB
10
渭F
10 V
OUT1A
M
OUT1B
SENSE1
+5 V
0.1
渭F
CP1
CP2
CP3
0.1
渭F
CP4
VCP
0.1
渭F
A3906
IN1
IN2
IN3
+5 V
IN4
SLEEP
A3906
IN1
IN2
IN3
IN4
VBB
10
渭F
10 V
OUT1A
OUT1B
SENSE1
M
OUT2A
FL1
FL2
GND
M
OUT2B
SENSE2
FL1
FL2
GND
OUT2A
OUT2B
SENSE2
Dual DC motor application
3906-DS, Rev. 1
Stepper motor application

A3906SESTR-T 產(chǎn)品屬性

  • 1

  • 集成電路 (IC)

  • PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動器

  • -

  • 直流電機(jī)驅(qū)動器，步進(jìn)電機(jī)驅(qū)動器

  • -

  • 2/1

  • ± 1A

  • -

  • 2.5 V ~ 9 V

  • -20°C ~ 85°C

  • 表面貼裝

  • 20-WFQFN 裸露焊盤

  • 20-QFN 裸露焊盤（4x4）

  • Digi-Reel®

  • 620-1288-6

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