BL8023C

BL8023C
300mA Bi-Direction Relay Driver
DESCRIPTION
FEATURES
BL8023C 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.




BL8023C can provide 300mA typical driving
current, which will different according to the
relay coil resistance. The input High Level
Threshold of BL8023C is 3V; it can compatible
with most single chip microcontroller.



5 to 36V input voltage range
Low Power Consumption (IQ<1uA)
Input High Level Threshold: 3V, compatible with
most single chip microcontroller
Typical Driving Current: 300mA
Rds(on)=15ohm(Vin=12V, PMOSFET+NMOSFET)
Rds(on)=10ohm(Vin=20V, PMOSFET+NMOSFET)
Peak Driving Current: 500mA@Vin=24V
Environment Temperature: -40C~85C
SOP-8 package
APPLICATIONS
BL8023C is available in SOP-8 package.

Smart Meter
TYPICAL APPLICATION
L
220V
AC
N
A
AC
V+
AC
V-
+
BRIDGE
1
8
2
7
BL8023C
LC5223
3
6
4
5
Rs
B
Relay
ORDERING INFORMATION
OA
Package
NC
SOP-8
A
VIN
8023S
LLLLL
Part No.
BL8023C
PIN OUT & MARKING
GND
B
NC
OB
SOP-8
Note：
8023S: Product Code
th
th
LLLLL: 4 to 8 digits of Lot No.
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1
BL8023C
ABSOLUTE MAXIMUM RATING
Parameter
Value
Max Input Voltage
Max Operating Junction Temperature(Tj)
Ambient Temperature(Ta)
40V
150C
-40C – 125C
θja
128C / W
Package Thermal Resistance
SOP-8
θjc
45C / W
Storage Temperature(Ts)
-40C - 150C
Lead Temperature & Time
260C, 10S
Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device
reliability.
RECOMMENDED WORK CONDITIONS
Parameter
Value
Input Voltage Range
Operating Junction Temperature(Tj)
Max.36V
-40C –85C
ELECTRICAL CHARACTERISTICS
(VDD=5V, TA=25C)
Symbol
Parameter
VIN
Iq
Conditions
Input Voltage Range
Quiescent Current
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
VSD
TR
TD(ON)
TF
TDIOFF)
Typ
5
Switch Rdson
VTH
RIN
Min
Vin=12V, RL=75ohm
Vin=30V, RL=75ohm
Vin=12V, RL=40ohm
Vin=30V, RL=40ohm
Vin=12V
12
10
12
10
3
500
Is=1A
0.8
VIN=12V, RL=75ohm
VIN=12V, RL=75ohm
VIN=12V, RL=75ohm
VIN=12V, RL=75ohm
40
60
30
70
Max
Unit
36
1
18
16
18
16
V
uA
ohm
ohm
ohm
ohm
V
Kohm
1.5
V
ns
ns
ns
ns
LOGIC FUNCTION TABLE
Input A
Input B
Output OA
Output OB
RELAY RESPONSE
1
0
0
1
0
1
0
1
1
0
High-impedance
High-impedance
0
1
High-impedance
High-impedance
ON
OFF
Hold
Hold
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2
BL8023C
PIN DESCRIPTION
PIN #
NAME
1
2, 6
3
4
5
7
8
OA
NC
A
GND
OB
B
VIN
DESCRIPTION
Output A
Not connected.
Input A
Ground.
Output B
Input B
Supply input voltage
ELECTRICAL PERFORMANCE
Tested under TA=25C, unless otherwise specified
Turn on delay and rise time
Turn off delay and fall time
Ch1---Input Ch2---Output
Ch1---Input Ch2---Output
Vth VS. Vin
Forward Voltage
5.0
900
4.5
800
4.0
700
3.5
Vth(V)
I(mA)
600
500
400
3.0
2.5
2.0
300
1.5
200
1.0
100
0.5
0.0
0
0.0
0.5
1.0
1.5
0
2.0
10
15
20
Vin(V)
VSD(V)
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5
3
25
30
35
40
BL8023C
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
InputA
Backward drive/CLOSE
interval
Pulse width
=100ms
InputB
Pulse width
Interval
=100ms
Forward drive/OPEN
InputA
Pulse width
=100ms
interval
Forward drive/OPEN
Pulse width
=100ms
InputB
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4
interval
BL8023C
BL8023C
Pulse triggering application diagram
Level Triggering
If input is driven by voltage level, resistor R1, R2 should be used to insure low voltage standby input. Apply input voltage
according to logic table drives the relay correspondingly (R1, R2=30K-100K, R3, R4=100K, C1, C2=10n, recommended for
removing input spikes; 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).
L
220V
AC
N
AC
V+
AC
V-
+
BRIDGE
A
Vin
R1
R3
1
8
2
7
LC5223
3 BL8023C 6
4
5
Rs
B
R4
R2
C1
Relay
Level triggering application diagram
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5
Vin
BL8023C
PACKAGE OUTLINE
Package
SOP-8
Devices per reel
Package specification:
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6
2500
Unit
mm