UTC-IC H654

UNISONIC TECHNOLOGIES CO.,
H654
LINEAR INTEGRATED CIRCUIT
COMPLEMENTARY OUTPUT
HALL EFFECT LATCH
DESCRIPTION
The UTC H654 is integrated Hall sensors with complementary
output drivers designed for electronic commutation of brushless DC
Fan. It composed of an on-chip Hall voltage generator, a differential
amplifier, Schmitt trigger, an open-collector output on a single chip.
Furthermore, an internal bandgap regulator allows temperature
compensated operations and a wide operating supply range. An
on-chip protection diode is implemented to prevent reverse power
fault.
When the magnetic flux density larger than threshold BOP, DO
will be turned on(low) and DOB be turned off(high). The output state
is held until the magnetic flux density is lower than BRP, and then DO
is reversal to turned off and DOB turned on.
1
TO-94
*Pb-free plating product number: H654L
FEATURES
* Operate from 3.5V ~ 20V supply voltage.
* On-chip Hall sensor with two different sensitivity and hysteresis
settings.
* High output sinking capability up to 300mA for driving large load.
* Lower current change rate reduces the peak output voltages during
switching.
* Build-in protecting diode for chip reversal power connecting.
PIN DESCRIPTION
PIN PIN
P/I/O
DESCRIPTION
NO. NAME
1
Vcc
P Positive Power Supply
2
DO
O Output Pin
3
DOB
O Output Pin
4
Vss
P Ground
ORDERING INFORMATION
Order Number
Normal
Lead free plating
H654-T94-K
H654L-T94-K
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co.,
Package
Packing
TO-94
Bulk
1
QW-R118-003,A
H654
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
1
DO
VCC
2
REG.
Hall
Sensor
DOB
3
VSS
4
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2
QW-R118-003,A
H654
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta=25℃)
PARAMETER
Supply Voltage
Reverse VCC Polarity Voltage
Output OFF Voltage
Magnetic flux density
SYMBOL
VCC
VRCC
VCE
B
Continuous
Hold
Peak (Start Up)
Output ON Current
Power Dissipation
Operating Temperature
Junction Temperature
Storage Temperature
Note 1: Output Zener protection voltage
RATINGS
20
-35
50
Unlimited
0.3
0.4
0.7
500
0 ~ +70
+125
-40 ~ +150
IC
PD
TOPR
TJ
TSTG
UNIT
V
V
V
A
mW
℃
℃
℃
ELECTRICAL CHARACTERISTICS (Ta =25℃, unless otherwise specified.)
PARAMETER
Low Supply Voltage
Supply Voltage
Output Saturation Voltage
Output Leakage Current
Supply Current
Output Rise Time
Output Falling Time
Switch Time Differential
SYMBOL
VCE
VCC
VCE(sat)
ICEX
ICC
tR
tF
∆t
TEST CONDITIONS
VCC=3.5V, IL=100mA
MIN
TYP
0.4
3.5
VCC=14V, IL=300mA
VCE=14V, VCC=14V
VCC=20V, Output Open
VCC=14V, RL=820Ω, CL=20pF
VCC=14V, RL=820Ω, CL=20pF
VCC=14V, RL=820Ω, CL=20pF
0.3
<0.1
16
3.0
0.3
3.0
MAX
20
0.6
10
25
10
1.5
10
UNIT
V
V
V
µA
mA
µS
µS
µS
TYPICAL APPLICATION CIRCUIT
coil1
UTC H654
1
2 3
coil2
4
+
- Vcc
Brushless DC Fan
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3
QW-R118-003,A
H654
LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT
14V
UTC H654
DO
RL1
820Ω
DOB
RL2
820Ω CL1
20pF
CL2
20pF
MAGNETIC CHARACTERISTICS
PARAMETR
Ta= 25℃
MIN
MAX
100
-100
50
200
SYMBOL
Operate Point
Release Point
Hysteresis
BOP
BRP
BHYS
Ta= 0 ~ +70℃
MIN
MAX
100
-100
30
200
UNIT
G
G
G
-200
RP
OFF
ON
OP
-100
0
100
Output Voltage in Volts
Output Voltage i n Volts
HYSTERESIS CHARACTERISTICS
200
Magnetic Flux Density in Gauss
UNISONIC TECHNOLOGIES CO., LTD
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-200
OFF
OP
RP
ON
-100
0
100
200
Magnetic Flux Density in Gauss
4
QW-R118-003,A
H654
LINEAR INTEGRATED CIRCUIT
PERFORMANCE CHARACTERISTICS
Ta(℃)
PD (mW)
25
550
50
525
60
515
70
505
80
485
85
475
90
465
95
455
100
445
105
425
110
405
115
385
120
365
Power Dissipation Curve
600
PD (mW)
500
400
300
200
100
0
25
50
75
100
125
150
Ta (℃)
Typical Magnetic Switch Point VS.Supply Voltage
120
Flux Density (G)
BHYS
80
BOP
40
0
BRP
-40
12
5
20
24
Supply Voltage (V)
Supply Current (mA)
Typical Supply Current versus Supply Voltage
16
14
12
Ta=25℃
10
Ta=80℃
Ta=20℃
8
6
4
2
0
0
5
10
15
20
25
Supply Voltage (V)
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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5
QW-R118-003,A