MC33991DH [NXP]
MC33991DH;
NXP 
Analog Products Fact Sheet
Power
Actuation
MC33991
Gauge Driver Integrated Circuit
H-Bridge
Stepper Motors
33991 SIMPLIFIED APPLICATION DIAGRAM
DESCRIPTION
The 33991 is a Serial Peripheral Interface
(SPI) controlled, dual stepper motor driver IC.
This monolithic IC consists of four dual output
H-Bridge coil drivers and their associated
control and management logic. Each pair of
H-Bridge drivers automatically controls the
speed, direction, and magnitude of current
through the two coils of a two-phase
V
PWR
instrumentation stepper motor, similar to an
MMT-licensed AFIC 6405.
33991
VPWR
SIN1+
SIN1-
A special patent-pending circuit detects motor
stall accurately and allows simple end-stop
detection.
5.0 V
Regulator
Motor 1
VDD
COS1+
COS1-
RT
RS
SIN2+
SIN2-
The GDIC is ideal for use in instrumentation
systems that require distributed and flexible
stepper motor gauge driving. The device
simplifies the use of stepper motors by
including all the logic required to manage the
motion of the stepper without requiring
significant processor overhead. SPI
Motor 2
CS
MCU
COS2+
COS2-
GND
SCLK
SI
SO
communications are used to request a motor
position and the IC completely manages the
acceleration, stepping, and deceleration of the
motor to arrive correctly at the requested
position. Updated requests can be received at
any time and the logic correctly acts upon the
latest position request. Both motors can be
controlled and driven independently.
APPLICATIONS
PERFORMANCE
TYPICAL VALUES
• Driving Low-Power 2-Phase Bipolar Stepper
Motors
Operating Voltage
Motor Drivers
9.0 – 26 V
2
• Automotive Gauge Clusters
• Mirror Positioning
Drive Current
±30 mA
SPI
• Headlight Leveling
Control
• Tachograph
Operating Temperature
-40°C ≤ T ≤ 125°C
A
• Drivers for Multimedia Applications
• Digital Clocks
FEATURES
QUESTIONS
• MMT-licensed two-phase stepper motor compatible
• Minimal processor overhead required
• Do you need to driver small stepper motors
with a simple microcontroller?
• Do you have power supply constraints?
• Fully integrated pointer movement and position state machine with air
core movement emulation
• Are you looking for a simple interface to the
motor controller?
• 4096 possible steady state pointer positions
• 340° maximum pointer sweep
• Do you need to detect motor end-stop
stalling?
2
• Linear 4500°
• Do you want to eliminate production
calibration of motor positions?
• Maximum pointer velocity of 400°
• Analog microstepping (12 steps/degree of pointer movement)
• Pointer calibration and return to zero
• SPI controlled 16-bit word
• Calibratable internal clock
• Low sleep mode current
• Devices available for comparison are in the Analog Product Selector
Guide - SG1002, and Automotive Product Selector Guide - SG187
SHUT
STATUS
PROTECTION
Overvoltage
DETECT LIMITING DOWN REPORTING
z
z
z
z
z
z
z
z
z
Undervoltage
Overcurrent/SC
Overtemperature
SPI Framing Error
z
z
z
CUSTOMER BENEFITS
ORDERING INFORMATION
Temperature
Range (TA)
• Simple system design with direct interfacing to a microprocessor
Device
Package
• Low system cost, minimal component count, and simple circuit
hook-up
MC33991DH/R2
MCZ33991EG/R2
-40°C to 125°C
24 SOICW
MC33991
• Full management of movement of two motors
• Low V current consumption
Data Sheet Order Number
DD
• Analog microstepping for low EMI
• Fully protected against faulted motors
Contact Sales for Evaluation Kit Availability
24 SOICW
1.27 mm Pitch
15.4 mm x 7.5 mm Body
Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc.
All other product or service names are the property of their respective owners.
© Freescale Semiconductor, Inc. 2006. All rights reserved.
MC33991FS
REV 1.0
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