Datasheet

UNISONIC TECHNOLOGIES CO., LTD
319
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
319G-G04-K

Package
SIP-4
Packing
Bulk
MARKING
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LINEAR INTEGRATED CIRCUIT
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
BLOCK DIAGRAM
1
Voltage
Regulator
Hall
Element
Temperature
Compensated
Current
Amplifier
2
Latch
Circuit
Hysteresis
Control
Pre-Driver
Sensitivity
Control
Thermal
Shutdown
3
4
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LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
20
V
Peak Current
800
mA
Output Peak Sink Current Hold Current
IOUT
600
mA
Continuous Current
300
mA
TA=25°C
600
mW
PD
Power Dissipation
TA=70°C
450
mW
Junction Temperature
TJ
+150
°C
Operating Junction Temperature
TJ
0 ~ +85
°C
Storage Temperature
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.
VCC Pin Voltage

DC ELECTRICAL CHARACTERISTICS
PARAMETER
Supply Voltage
Quiescent Supply Current
SYMBOL
VCC
IVV
VCE(SINK)
VCE(DRIVE)
Output Saturation Voltage

VCC=20V, No use pin open
VCC=14V, IC=200mA
VCC=14V, IC=200mA
MIN
3
TYP
18
0.55
12.5
MAX
20
25
0.8
14
UNIT
V
mA
V
V
MAX
1.0
1.5
0.5
UNIT
μs
μs
μs
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
tR
tF
∆t
Rise Time
Fall Time
Switch Time Differential

TEST CONDITIONS
TEST CONDITIONS
RL=820Ω, CL=20pF
RL=820Ω, CL=20pF
RL=820Ω, CL=20pF
MIN
TYP
0.5
0.5
1.0
MAGNETIC CHARACTERITICS
A Grade
PARAMETER
Operating Point
Release Point
SYMBOL
BOP
BRP
MIN
10
-45
TYP
B Grade
PARAMETER
Operating Point
Release Point
SYMBOL
BOP
BRP
MIN
TYP
C Grade
PARAMETER
Operating Point
Release Point
SYMBOL
BOP
BRP
MIN
MAX
65
-65
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MAX
45
-10
-90
TYP
MAX
90
UNIT
Gauss
UNIT
Gauss
UNIT
Gauss
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LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
UTC 319
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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=470Ω
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.
D1
R wire
VCC
C1
+VC
NO
RC
Y wire
L1
319
SO
GND
B wire
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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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LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS

Output Rise Time
Output Falling Time
VCC=14V, RL=820Ω, CL=20pF
CH1: 5V/div
CH1: 5V/div
VCC=14V, RL=820Ω, CL=20pF
CH1
0
0
500
Time (100ns/div)
1000
CH1
0
0
1000
Time (200ns/div)
2000
Application of Fans
CH1: 10V/div
0
CH1: 10V/div
CH1
0
CH2
0
50
Time (10ms/div)
100
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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