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| 型号： | UDN2916B-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 7/10页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DRIVER PWM DUAL 24-DIP |
| 标准包装： | 15 |
| 应用： | 直流电机驱动器，步进电机驱动器 |
| 输出数： | 2/1 |
| 电流 - 输出： | ±750mA |
| 电压 - 负载： | 10 V ~ 45 V |
| 电源电压： | 4.75 V ~ 5.25 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-DIP |
| 包装： | 管件 |
| 其它名称： | 620-1118 |
2916
LOGIC CONTROL OF OUTPUT CURRENT
Dual Full-Bridge Motor Driver
l 0 I 1
V REF /10 R S = I TRIP
V REF /15 R S = 2/3 I TRIP
V REF /30 R S = 1/3 I TRIP
Two logic level inputs (I 0 and I 1 ) allow digital selection of the motor
winding current at 100%, 67%, 33%, or 0% of the maximum level per the
table. The 0% output current condition turns off all drivers in the bridge and
can be used as an OUTPUT ENABLE function.
CURRENT-CONTROL TRUTH TABLE
Output Current
L L
H L
L H
quence. This is accomplished by digitally selecting
100% drive current when only one phase is on and
67% drive current when two phases are on. Logic
highs on both I 0 and I 1 turn-off all drivers to allow
rapid current decay when switching phases. This
helps to ensure proper motor operation at high step
rates.
The logic control inputs can also be used to
select a reduced current level (and reduced power
dissipation) for "hold" conditions and/or increased
current (and available torque) for start-up condi-
tions.
H
H
0
GENERAL
V
V BB
R S
R S R C
R C
C
18
7
These logic level inputs greatly enhance the implementation of microprocessor
controlled drive formats.
During half-step operations, the I 0 and I 1 allow the microprocessor to
control the motor at a constant torque between all positions in an eight-step se-
TYPICAL APPLICATION
STEPPER
MOTOR
BB
1 24
+
2 23
1
3 22
2 C C
4 21
C
5 20
6 19
FROM
μ P
8 17
The PHASE input to each bridge determines
the direction motor winding current ? ows. An in-
ternally generated dead time (approximately 2 μ s)
prevents crossover currents that can occur when
switching the PHASE input.
All four drivers in the bridge output can be
turned-off between steps (I 0 = I 1 ≥ 2.4 V), result-
ing in a fast current decay through the internal
output clamp and ? yback diodes. The fast current
decay is desirable in half-step and high-speed ap-
plications. The PHASE, I 0 ,and I 1 inputs ? oat high.
Varying the reference voltage, V REF , pro-
vides continuous control of the peak load current
for micro-stepping applications.
Thermal protection circuitry turns-off all
drivers when the junction temperature reaches
+170°C. It is only intended to protect the device
from failures due to excessive junction tempera-
ture and should not imply that output short circuits
are permitted. The output drivers are re-enabled
when the junction temperature cools to +145°C.
The UDx2916 output drivers are optimized
for low output saturation voltages—less than 1.8 V
total (source plus sink) at 500 mA. Under normal
operating conditions, when combined with the ex-
cellent thermal properties of the package designs,
this allows continuous operation of both bridges
simultaneously at 500 mA.
FROM
μ P
9 9
θ 1
16
V
10
θ 2
15
REF
TRUTH TABLE
V
REF
11
14
820 pF
56 k Ω
PHASE
OUT A
OUT B
56 k Ω
R T
12
820 pF
C T
V CC
13
+5 V
C
T
R T
H
L
H
L
L
H
Dwg. EP-008B1
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-
5000
www.allegromicro.com
6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| UDN2916B-T | 制造商:Allegro MicroSystems 功能描述:Driver IC Package/Case:24-DIP |
| UDN2916EB | 功能描述:IC MOTOR DRIVER PWM DUAL 44PLCC RoHS:否 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| UDN2916EB-T | 功能描述:IC MOTOR DRIVER PWM DUAL 44PLCC RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| UDN2916EBTR | 功能描述:IC MOTOR DRIVER PWM DUAL 44PLCC RoHS:否 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
| UDN2916EBTR-T | 功能描述:IC MOTOR DRIVER PWM DUAL 44PLCC RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:直流电机驱动器，步进电机驱动器 评估套件:- 输出数:1 或 2 电流 - 输出:750mA 电压 - 负载:10 V ~ 40 V 电源电压:4.5 V ~ 5.5 V 工作温度:-20°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-BFSOP（0.295"，7.50mm 宽） 供应商设备封装:24-SOP 包装:Digi-Reel® 其它名称:MTS62C19A-HS105DKR |
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