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UNISONIC TECHNOLOGIES CO., LTD 319
Preliminary LINEAR INTEGRATED CIRCUIT
SINGLE PHASE DC MOTOR DRIVE IC
DESCRIPTION
The UTC 319 is particularly designed for a single phase DC motor driver circuit. It includes hall sensor and output coil drivers. The range of the operating voltage and the operation current is typically 0.3A. The UTC 319 is a well performance integrated IC with less required external components. The high sensitivity of Hall effect sensor is suitable for motors from mini-type CPU coolers to blowers and DC fans.
FEATURES
* Operating Voltage Ranges Widely from 3.0V to 20V * 1 Chip Hall Sensor/Drivers * Output Thermal Shutdown Protect Circuit * Output Sink Current up to 300mA
ORDERING INFORMATION
Ordering Number Lead Free Halogen Free 319L-G04-K 319G-G04-K Package SIP-4 Packing Bulk
PIN DESCRIPTION
PIN NO. 1 2 3 4 PIN NAME VCC NO SO GND DESCRIPTION IC Power Supply Coil driver output is low state during the N magnetic field. Coil driver output is low state during the S magnetic field. IC Ground
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BLOCK DIAGRAM
Preliminary
LINEAR INTEGRATED CIRCUIT
1
Voltage Regulator
Hall Element
Temperature Compensated Current Amplifier
2 Latch Circuit
Hysteresis Control
Pre-Driver
Sensitivity Control
Thermal Shutdown 4
3
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PARAMETER VCC Pin Voltage
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING
RATINGS UNIT 20 V Peak Current 800 mA Output Peak Sink Current Hold Current IOUT 600 mA Continuous Current 300 mA TA=25C 600 mW Power Dissipation PD TA=70C 450 mW Junction Temperature TJ +150 C Operating Junction Temperature TJ 0 ~ +85 C Storage Temperature Range TSTG -65 ~ +150 C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. SYMBOL
DC ELECTRICAL CHARACTERISTICS
PARAMETER Supply Voltage Quiescent Supply Current Output Saturation Voltage SYMBOL VCC IVV VCE(sink) VCE(drive) TEST CONDITIONS VCC=20V, No use pin open VCC=14V, IC=200mA VCC=14V, IC=200mA MIN 3 TYP 18 0.55 VCC=1.5 MAX 20 25 0.8 VCC UNIT V mA V V
AC ELECTRICAL CHARACTERISTICS
PARAMETER Rise Time Fall Time Switch Time Differential SYMBOL tR tF t TEST CONDITIONS RL=820, CL=20pF RL=820, CL=20pF RL=820, CL=20pF MIN TYP 0.5 0.5 1.0 MAX 1.0 1.5 0.5 UNIT s s s
MAGNETIC CHARACTERITICS
A Grade PARAMETER Operating Point Release Point B Grade PARAMETER Operating Point Release Point C Grade PARAMETER Operating Point Release Point SYMBOL BOP BRP SYMBOL BOP BRP SYMBOL BOP BRP MIN 10 -45 MIN -65 MIN -90 TYP MAX 90 TYP MAX 45 -10 MAX 65 UNIT Gauss
TYP
UNIT Gauss
UNIT Gauss
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Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
UTC 319
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Preliminary
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
The Example of Typical Application Circuit A typical application circuit is shown as follows. The red, yellow, and black wires are the input points of the motor system: Red--the input of power supply; Yellow--the output of FG; Black--the ground signal. RC is an external pull-up resistance for the use of measuring FG signal. The value of RC can be calculated by the transistor saturation voltage (VON), sink current (IC), and off-level voltage (VC). V - VON RC = C IC For example: VC=+5V for TTL level; IC= 10mA at 0.2V saturation voltage; The safety value of RC=470 There is a reverse protection diode D1 in the circuit. As if the red and black wires reversely connect with the power source, the current flows through the ground via IC and coils L1 and L2 to power supply. Under such kind of circumstances the IC and coils are easy to be burned out. From that, this reverse protection diode is necessary in the design. Meanwhile, an extra voltage drop on the supply voltage should be taken into consideration, which is caused by the reverse protection diode. The capacitor C1 is designed to reduce the ripple noise during the transient of the output stages, and its value is determined by the coil impedance and characteristics.
R wire C1 +VC
D1 VCC
NO RC Y wire L1 SO 319
GND B wire
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Preliminary
LINEAR INTEGRATED CIRCUIT
FUNCTIONAL INFORMATION
H-Bridge Transistor Output In the following figure, the diagram of H-bridge transistors is shown. The single-phase motor rotation is changed by a switching current of coil L1. When the magnetic pole is N pole, Q2, Q3, Q5 is shut off and Q1, Q4, Q6 is turn-on, the current flows through L1 from SO to NO. And when the magnetic pole is S pole, Q1, Q4, Q6 is turn-off and Q2, Q3 is turned on. The current flows through L1 from NO to SO.
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Preliminary
LINEAR INTEGRATED CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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