A3958SB Allegro Microsystems Inc, A3958SB Datasheet - Page 10

• Manufacturer Part Number: A3958SB
• Description: IC MOTOR DRIVER PWM FULL 24-DIP
• Manufacturer: Allegro Microsystems Inc

Specifications of A3958SB

• Applications: PWM Motor Driver
• Number Of Outputs: 1
• Current - Output: ±2A
• Voltage - Load: 20 V ~ 50 V
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

A3958
Terminal List
Terminal Name
CP
CP1 & CP2
PHASE
OSC
GROUND
LOGIC SUPPLY
ENABLE
DATA
CLOCK
STROBE
REF
MODE
NO CONNECT
OUT
SENSE
GROUND
LOAD SUPPLY
OUT
NO CONNECT
RANGE
V
* For the A3958SB DIP only, there is an indeterminate resistance between the substrate grounds (pins 6, 7, 18,
and 19) and the grounds at pins 5 and 8. Pins 5 and 8, and 6, 7, 18, or 19 must be connected together externally.
REG
A
B
GROUND
GROUND
GROUND
GROUND
SUPPLY
ENABLE
CLOCK
PHASE
LOGIC
DATA
OSC
CP
CP
2
1
12
10
11
8
9
1
2
3
4
5
6
7
9
θ
V
DD
A3958SB
Terminal Description
Reservoir capacitor (typically 0.22 μF)
The charge pump capacitor (typically 0.22 μF)
Logic input for direction control (see also D15)
Logic-level oscillator (square wave) input
Grounds
V
Logic input for enable control (see also D14)
Logic-level input for serial interface
Logic input for serial port (data is entered on rising edge)
Logic input for serial port (active on rising edge)
V
Logic input for PWM mode control (see also D17)
No (Internal) Connection
One of two DMOS bridge outputs to the motor
Sense resistor
Grounds
V
One of two DMOS bridge outputs to the motor
No (Internal) connection
Logic Input for V
Regulator decoupling capacitor (typically 0.22 μF)
CHARGE PUMP
SERIAL PORT
DD
REF
BB
, the high-current, 20 V to 50 V, motor supply
, the low voltage (typically 5 V) supply
, the load current reference input volt. (see also D16)
÷
V
BB
REF
24
20
19
18
17
13
23
22
21
16
15
14
Dwg. PP-069-1A
range control (see also D16)
DMOS Full-Bridge PWM Motor Driver
CP
V
RANGE
LOAD
SUPPLY
GROUND
SENSE
OUT
MODE
REF
STROBE
OUT
GROUND
REG
A
B
LOGIC SUPPLY
GROUND
GROUND
STROBE
ENABLE
PHASE
CLOCK
DATA
OSC
CP
CP
CP
2
1
12
10
11
8
9
1
2
3
4
5
6
7
9
V
DD
A3958SLB
A3958SB
(DIP)
24
1 & 2
3
4
5, 6, 7, 8*
9
10
11
12
13
14
15
—
16
17
18, 19*
20
21
—
22
23
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
÷
V
NC
NC
BB
A3958SLB
(SOIC)
1
2 & 3
4
5
6, 7
8
9
10
11
12
13
14
15
16
17
18, 19
20
21
22
23
24
19
24
20
18
13
23
22
21
17
16
15
14
V
RANGE
NO
CONNECTION
OUT
LOAD SUPPLY
GROUND
SENSE
NO
CONNECTION
MODE
REF
GROUND
OUT
REG
B
A
Dwg. PP-069A
9