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A2916

更新时间： 2024-11-02 22:38:43
品牌 Logo 应用领域
急速微 - ALLEGRO 驱动器
页数 文件大小 规格书
8页 312K
描述
DUAL FULL-BRIDGE PWM MOTOR DRIVER

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A2916 数据手册

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2916  
DUAL FULL-BRIDGE  
PWM MOTOR DRIVER  
The UDN2916B, UDN2916EB, and UDN2916LB motor drivers are  
designed to drive both windings of a bipolar stepper motor or  
bidirectionally control two dc motors. Both bridges are capable of  
sustaining 45 V and include internal pulse-width modulation (PWM)  
control of the output current to 750 mA. The outputs have been opti-  
mized for a low output saturation voltage drop (less than 1.8 V  
total source plus sink at 500 mA).  
For PWM current control, the maximum output current is deter-  
mined by the user’s selection of a reference voltage and sensing  
resistor. Two logic-level inputs select output current limits of 0, 33,  
67, or 100% of the maximum level. A PHASE input to each bridge  
determines load current direction.  
UDN2916B (DIP)  
V
BB  
LOAD  
S UP P LY  
1
2
3
24  
23  
22  
21  
OUT  
OUT  
1A  
2A  
E
1
1
S E NS E  
E
1
2
2
2
S E NS E  
OUT  
4
5
6
OUT  
1B  
20  
I
01  
2B  
G R OUND  
G R OUND  
19  
18  
G R OUND  
The bridges include both ground clamp and flyback diodes for  
protection against inductive transients. Internally generated delays  
prevent cross-over currents when switching current direction. Special  
power-up sequencing is not required. Thermal protection circuitry  
disables the outputs if the chip temperature exceeds safe operating  
limits.  
The UDN2916B is supplied in a 24-pin dual in-line plastic batwing  
package with a copper lead-frame and heat sinkable tabs for improved  
power dissipation capabilities. The UDN2916EB is supplied in a 44-lead  
power PLCC for surface mount applications. The UDN2916LB is  
supplied in a 24-lead surface-mountable SOIC. Their batwing construc-  
tion provides for maximum package power dissipation in the smallest  
possible construction. The UDN2916B/EB/LB are available for opera-  
tion from -40°C to +85°C. To order, change the prefix from 'UDN' to  
'UDQ'. These devices are also available on special order for operation  
to +105°C. The B and LB packages are available in a lead (Pb) free  
version, with 100% matte tin leadframe.  
7
8
G R OUND  
I
17  
16  
15  
14  
13  
I
11  
02  
9
θ
P HAS E  
1
I
1
12  
V
10  
P HAS E  
2
θ
R E F  
1
2
R C  
11  
12  
V
1
R E F  
R C  
2
2
LOG IC  
S UP P LY  
V
C C  
Dwg. P P -005  
ABSOLUTE MAXIMUM RATINGS  
at TJ ≤ 150°C  
Motor Supply Voltage, VBB .................... 45 V  
Output Current, IOUT  
(Peak) ........................................ +1.0 A  
(Continuous) .......................... +750 mA  
Logic Supply Voltage, VCC ................... 7.0 V  
Logic Input Voltage Range,  
FEATURES  
■
750 mA Continuous Output Current  
■ 45 V Output Sustaining Voltage  
■
■
Internal Clamp Diodes  
Internal PWM Current Control  
V
IN ......................... -0.3 V to VCC+0.3 V  
■ Low Output Saturation Voltage  
■ Internal Thermal Shutdown Circuitry  
Output Emitter Voltage, VE .................. 1.5 V  
Package Power Dissipation,  
■
Similar to Dual PBL3717, UC3770  
PD ........................................................ See Graph  
Operating Temperature Range,  
TA ................................. -20°C to +85°C  
Storage Temperature Range,  
Always order by complete part number:  
Part Number  
UDN2916B  
Package  
24-Pin DIP  
TS ............................... -55°C to +150°C  
UDN2916B-T  
UDN2916EB  
UDN2916LB  
24-Pin DIP, Lead-free  
44-Lead PLCC  
24-Lead SOIC  
Output current rating may be limited by duty  
cycle, ambient temperature, and heat sinking.  
Under any set of conditions, do not exceed the  
specified peak current rating or a junction  
temperature of +150°C.  
UDN2916LB-T 24-Lead SOIC, Lead-free  
12345678

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