pbl3717as STMicroelectronics, pbl3717as Datasheet
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pbl3717as
Manufacturer Part Number
pbl3717as
Description
Stepper Motor Driver
Manufacturer
STMicroelectronics
Datasheet
1.PBL3717AS.pdf
(11 pages)
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DESCRIPTION
The PBL3717A is a monolithic IC which controls and
drives one phase of a bipolar stepper motor with
chopper control of the phase current. Current levels
may be selected in three steps by means of two logic
inputs which select one of three current compara-
tors. When both of these inputs are high the device
is disabled. A separate logic input controls the direc-
tion of current flow.
A monostable, programmed by an external RC net-
work, sets the current decay time.
The power section is a full H-bridge driver with four
internal clamp diodes for current recirculation. An
external connection to the lower emitters is available
for the insertion of a sensing resistor. Two
PBL3717As and few external components form a
complete stepper motor drive subsystem.
The raccomended operating ambient temperature
ranges is from 0 to 70 C.
The PBL3717A is supplied in a 12 + 2 + 2 lead Pow-
erdip package.
July 2003
FULL STEP - HALF STEP - QUARTER STEP
OPERATING MODE
BIPOLAR OUTPUT CURRENT UP TO 1 A
FROM 10 V UP TO 46 V MOTOR SUPPLY
VOLTAGE
LOW SATURATION VOLTAGE WITH INTE-
GRATED BOOTSTRAP
BUILT IN FAST PROTECTION DIODES
EXTERNALLY
LEVEL
OUTPUT CURRENT LEVEL DIGITALLY OR
ANALOGUE CONTROLLED
THERMAL PROTECTION WITH SOFT INTER-
VENTION
®
SELECTABLE
CURRENT
PIN CONNECTION (top view)
STEPPER MOTOR DRIVER
ORDER CODE : PBL3717A
Powerdip 12 + 2 + 2
(Plastic Package)
PBL3717A
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