BL8023H
400mA Bi-Direction Relay Driver
DESCRIPTION
BL8023H is a bi-direction relay driver circuit, used
to control the magnetic latching relay, with large
output capability, ultra-low power consumption.
It can be widely used in smart meters and other
pulses, level control applications.
BL8023H can provide 400mA typical driving
current, which will different according to the
relay coil resistance. The input High Level
Threshold of BL8023H is 2V; it can compatible
with most single chip microcontroller.
BL8023H is available in SOT-23-6 package.
FEATURES
5 to 40V input voltage range
Low Power Consumption (IQ<1uA)
Input High Level Threshold: 2V, compatible with
most single chip microcontroller
Typical Driving Current: 400mA
Rds(on)=7ohm(Vin=12V, PMOSFET+NMOSFET)
Rds(on)=6.5ohm(Vin=30V, PMOSFET+NMOSFET)
Peak Driving Current: 500mA@Vin=24V
Environment Temperature: -40C~85C
SOT-23-6 package
APPLICATIONS
Smart Meter
TYPICAL APPLICATION
L
220V
AC
N
AC
AC
V+
V-
+
BRIDGE
1
6
Rs
BL8023H
2
LC5226
5
A
B
3
4
Relay
ORDERING INFORMATION
Part No.
BL8023HCB6TR
PIN OUT & MARKING
B
6
Package
SOT-23-6
Tape & Reel
3000/Reel
VIN
5
OA
4
RUYW
1
2
3
RU: Product Code
YW: Date code
OB
GND
A
SOT23-6
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BL8023H
ABSOLUTE MAXIMUM RATING
Parameter
Max Input Voltage
Max Operating Junction Temperature(Tj)
Ambient Temperature(Ta)
Value
40V
150C
-40C – 125C
θ
ja
190C / W
Package Thermal Resistance
SOT23-6
θ
jc
110C / W
Storage Temperature(Ts)
-40C - 150C
Lead Temperature & Time
260C, 10S
Note:
Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device
reliability.
RECOMMENDED WORK CONDITIONS
Parameter
Input Voltage Range
Operating Junction Temperature(Tj)
Value
Max.40V
-40C –85C
ELECTRICAL CHARACTERISTICS
(VIN=5V, T
A
=25C)
Symbol
VIN
Iq
Rdson
V
TH
R
IN
V
SD
T
R
T
D(ON)
T
F
T
DIOFF)
Parameter
Input Voltage Range
Quiescent Current
Switch Rdson
ON Input High Voltage
Equivalent Input Resistor
Fly-Wheel Diode Forward Voltage
Rise Time
Turn ON Delay Time
Fall Time
Turn OFF Delay Time
Conditions
Min
5
Typ
Max
40
1
10
10
10
Unit
V
uA
ohm
ohm
ohm
V
Kohm
V
ns
ns
ns
ns
Vin=12V, R
L
=75ohm
Vin=30V, R
L
=75ohm
Vin=12V, R
L
=40ohm
Vin=12V
Is=1A
VIN=12V, R
L
=75ohm
VIN=12V, R
L
=75ohm
VIN=12V, R
L
=75ohm
VIN=12V, R
L
=75ohm
7
6.5
7
2
500
0.8
40
60
30
70
1.5
LOGIC FUNCTION TABLE
Input A
1
0
0
1
Input B
0
1
0
1
Output OA
1
0
High-impedance
High-impedance
Output OB
0
1
High-impedance
High-impedance
RELAY RESPONSE
ON
OFF
Hold
Hold
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BL8023H
PIN DESCRIPTION
NAME
OB
GND
A
OA
VIN
B
PIN #
1
2
3
4
5
6
DESCRIPTION
Output B
Ground.
Input A
Output A
Supply input voltage
Input B
ELECTRICAL PERFORMANCE
Tested under TA=25
C,
unless otherwise specified
Turn on delay and rise time
Ch1---Input Ch2---Output
Turn off delay and fall time
Ch1---Input Ch2---Output
Forward Voltage
1400
1200
1000
800
600
400
0.5
200
0
0.0
0.5
1.0
V
SD
(V)
1.5
2.0
0.0
0
5
10
2.5
2.0
1.5
1.0
Vth VS. Vin
Vth(V)
I(mA)
15
20
25
Vin(V)
30
35
40
45
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BL8023H
BLOCK DIAGRAM
DETAILED DESCRIPTION
Pulse Triggering
If input is driven by square pulse, connect the inputs to the pulse source directly. Relay will operate as logic table
stated (Vin should be less than the power supply voltage, Rs is current-limiting resistor, it can be ignored in the voltage
is below 20V, i.e. Rs=0).
The recommended pulse width=100ms. The length of the intervals should be longer than 100ms. These intervals
include: intervals between forward drive pulse and next backward drive pulse, intervals between forward drive pulse
and next forward drive pulse, intervals between backward drive pulse and next forward drive pulse, intervals between
backward drive pulse and next backward drive pulse.
Forward drive/OPEN
interval
Pulse width
=100m
s
Pulse width
=100m
s
Forward drive/OPEN
Forward drive/OPEN
Interval
Backward drive/CLOSE
InputA
InputB
InputA
InputB
Pulse width
=100m
s
interval
Pulse width
=100m
s
interval
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BL8023H
L
220V
AC
N
AC
AC
V+
V-
+
BRIDGE
1
6
Rs
BL8023H
2
LC5226
5
A
B
3
4
Relay
Pulse triggering application diagram
Relay free-wheel
Relay from ON to OFF, the energy stored in the relay inductor released by the chip’s internal body diode and the relay
inductor. Until the end of the release of this energy, relay proceeding to the next operation.
PACKAGE OUTLINE
Package
Package specification：
SOT23-6
Devices per reel
3000
Unit
mm
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