UNISONIC TECHNOLOGIES CO., LTD
UH266
HIGH VOLTAGE HALL
EFFECT LATCH
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
The UTC
UH266
is a one-chip composed of Hall sensor and
output coil drivers, applied to two-phase brush-less DC motor.
The device includes an on-chip Hall plate for magnetic sensing, a
amplifier for Hall voltage, and a Schmitt trigger to provide
switching
hysteresis,
and
complementary
darlington
open-collector drivers for sinking large current loads. An internal
bandgap regulator is used to provide temperature compensated
supply voltage and allows a wide operating range.
If B>Bop, DO turn on (low) and DOB turn off (high). The
outputs state is latched prior to reach release point (Brp). if
B<Brp, DO turn off and DOB turn on. UTC
UH266
is rated for
operation over temperature range from -20°C to 85°C and voltage
range from 4V to 28V.
1
SIP-4
FEATURES
* Operating voltage: 4V~28V
* Output current: 400mA(Continuous, 25°C)
* Output protection Zener breakdown Vz=62V(Typ)
* Reverse power protection
ORDERING INFORMATION
Ordering Number
UH266G-G04-K
Package
SIP-4
Packing
Bulk
MARKING
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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UH266
PIN DESCRIPTION
PIN NO.
1
2
3
4
PIN NAME
V
CC
DO
DOB
GND
DESCRIPTION
Positive Power Supply
Output Pin
Output Pin
Ground
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
V
CC
DO
Regulator
Over-Temperature
Protection
Hall Plate
Amplifier
Schmitt
Trigger
Temperature
Compensation
Output
Driver
DOB
GND
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UH266
ABSOLUTE MAXIMUM RATING
(T
A
=25°C)
PARAMETER
Supply Voltage
Output “OFF” Voltage
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
V
CC
28
V
V
OUT(OFF)
28
V
I
O(con)
400 (Note 2)
mA
Output “ON” Current
I
O(hold)
500
mA
I
O(peak)
700
mA
Magnetic Flux Density
B
Unlimited
Gauss
Power Dissipation (Note 3)
P
D
550
mW
Operating Temperature Range
T
OPR
-20~+85
°C
Storage Temperature
T
STG
-65~+150
°C
Notes: 1. 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.
2. I
O
(con) is 150mA at 85°C
3. See Performance Characteristic for other conditions
THERMAL DATA
SYMBOL
θ
JA
RATINGS
227
UNIT
°C/W
PARAMETER
Junction to Ambient
ELECTRICAL CHARACTERISTICS
(T
A
=25°C)
SYMBOL
V
CC
V
Z
V
CE
(sat)
I
CEX
I
CC
t
R
t
F
∆t
TEST CONDITIONS
Output Turn Off
V
CC
=24V, I
C
=400mA
V
CC
=24V, V
CE
=24V
V
CC
=24V, Output Open
V
CC
=24V, R
L
=820Ω, C
L
=20pF
MIN TYP MAX UNIT
4
28
V
54
62
70
V
1.1 1.5
V
< 0.1 10
µA
5
10 mA
1.0
5
µs
1.0 1.5
µs
3.0
10
µs
PARAMETER
Supply Voltage
Output Zener Breakdown
Output Saturation Voltage
Output Leakage Current
Supply Current
Output Rise Time
Output Falling Time
Switch Time Differential
MAGNETIC CHARACTERISTICS
(T
A
=25°C)
PARAMETER
SYMBOL
Bop
Brp
Bhy
MIN
10
-70
TYP
(1mT=10Gauss)
MAX
UNIT
70
Gauss
-10
Gauss
Gauss
(1mT=10Gauss)
MAX
UNIT
100
Gauss
Gauss
Gauss
A grade
Operate Point
Release Point
Hysteresis
B grade
PARAMETER
Operate Point
Release Point
Hysteresis
SYMBOL
Bop
Brp
Bhy
MIN
-100
80
TYP
80
UNISONIC TECHNOLOGIES CO., LTD
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UH266
CHYSTERESIS CHARACTERISTICS
LINEAR INTEGRATED CIRCUIT
Output Voltage in Volts
OPERATION CHARACTERISTICS
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
(Output Voltage)
Output Voltage in Volts
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UH266
TEST CIRCUIT
LINEAR INTEGRATED CIRCUIT
24V
UTC
UH266
R
L
1
820Ω
R
L
2
820Ω
C
L
1
20pF
C
L
2
20pF
V
OUT
1 (DO)
V
OUT
2 (DOB)
TYPICAL APPLICATION CIRCUIT
UTC
UH266
coil1
coil2
1
+
V
CC
-
2
3
4
Brush-less DC Fan
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
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