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A3901のメーカーはAllegroです、この部品の機能は「Dual Full Bridge Low Voltage Motor Driver」です。 |
部品番号 | A3901 |
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部品説明 | Dual Full Bridge Low Voltage Motor Driver | ||
メーカ | Allegro | ||
ロゴ | |||
このページの下部にプレビューとA3901ダウンロード(pdfファイル)リンクがあります。 Total 12 pages
A3901
Dual Full Bridge Low Voltage Motor Driver
Features and Benefits
▪ Low RDS(on) outputs
▪ Full- and half-stepping capability
▪ Small package
▪ Forward, reverse, and brake modes for DC motors
▪ Sleep mode with zero current drain
▪ PWM control up to 250 kHz
▪ Crossover-current protection
▪ Thermal shutdown (TSD)
Package: 10 Contact DFN (suffix EJ)
Description
The A3901 is a dual full-bridge motor driver, designed for low
voltage portable applications involving bipolar stepper or brush
DC motors. The outputs have been optimized for low voltage
drop, with currents up to ±400 mA (±800 mA with outputs
paralleled) and an operating voltage range of 2.5 to 5.5 V.
The four inputs (IN1 to IN4) can control a bipolar stepper motor
in full- or half-step mode, or DC motors in forward, reverse,
or brake mode. The inputs can be PWMed for current or speed
control at frequencies up to 250 kHz.
Internal protection circuitry includes thermal shut down (TSD)
and crossover (shoot-through) protection.
The A3901 is supplied in a 3 mm x 3 mm x 0.75 mm nominal
height, 10-lead DFN package, with exposed thermal pad
(package “EJ”). This small footprint package is lead (Pb) free,
with 100% matte tin leadframe plating.
Approximate Scale 1:1
Typical Application
+VBAT
10 µF
10 V
VBB
OUT1
IN1
CPU
IN2 OUT2
A3901
IN3
OUT3
IN4
GND
OUT4
M
+VBAT
10 µF
10 V
CPU
VBB
IN1 OUT1
IN2 OUT2
A3901
IN3
OUT3
IN4
GND
OUT4
Figure 1. Typical stepper motor control
+VBAT
10 µF
10 V
M
CPU
M
VBB
IN1 OUT1
IN2 OUT2
A3901
IN3
OUT3
IN4
GND
OUT4
M
Figure 2. Typical dual DC motor control
3901-DS, Rev. 5
Figure 3. Typical single DC motor control (paralleled outputs)
1 Page A3901
Dual Full Bridge Low Voltage Motor Driver
10 µF
10 V
IN1
Functional Block Diagram
VBB
TSD
BRIDGE1
OUT1
OUT2
IN2
Control Logic
and Gate Drive
IN3
IN4
BRIDGE2
OUT3
OUT4
PAD
GND
Terminal Diagram
IN1 1
IN2 2
GND 3
IN3 4
IN4 5
PAD
10 OUT1
9 OUT2
8 VBB
7 OUT3
6 OUT4
Number
1
2
3
4
5
6
7
8
9
10
–
Name
IN1
IN2
GND
IN3
IN4
OUT4
OUT3
VBB
OUT2
OUT1
Pad
Description
Logic input 1
Logic input 2
Ground terminal
Logic input 3
Logic input 4
Bridge2 output to load
Bridge2 output to load
Load supply terminal
Bridge1 output to load
Bridge1 output to load
Exposed pad for thermal dissipation; connect to GND externally
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
3Pages A3901
Dual Full Bridge Low Voltage Motor Driver
Characteristic Performance
Output On Resistance versus Load Supply Voltage
IOUT = 100 mA
4.00
3.50 Source
Sink
3.00 Total
2.50
Output On Resistance versus Load Supply Voltage
IOUT = 300 mA
4.00
3.50 Source
Sink
3.00 Total
2.50
2.00 2.00
1.50 1.50
1.00 1.00
0.50
2.5
3.0
3.5 4.0
VBB (V)
4.5 5.0
0.50
2.5 3.0 3.5 4.0 4.5 5.0
VBB (V)
Output On Resistance versus Output Current
VBB = 3 V
3.50
3.00
Source
2.50 Sink
2.00 Total
1.50
1.00
0.50
100 150 200 250 300 350 400
IOUT (mA)
Output On Resistance versus Output Current
VBB = 5 V
3.50
3.00
Source
2.50 Sink
Total
2.00
1.50
1.00
0.50
100 150 200 250 300 350 400
IOUT (mA)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
6
6 Page | |||
ページ | 合計 : 12 ページ | ||
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PDF ダウンロード | [ A3901 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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