BL5612
1.5A, 3.0-25.0V H-Bridge Driver
Description
Features
The BL5612 is one channel H-Bridge
driver IC, it provides integrated
motor-driver solution for toys, robotics,
consumer products and other low voltage
or battery-powered motion control
applications.
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The BL5612 maximum operational
voltage is 25.0V. It can supply up to 1.5A
of output continuous current and 3.5A of
output peak current. There is internal
shutdown function for over-temperature
protection and over-current protection
(IOCP = 4.5 A).
Operation voltage range up to 25.0V
Maximum continuous current output
up to 1.5A
Low RDS(ON) for highly efficient
H-bridge output.
Support PWM control
Over current protection
Over temperature protection
Low standby current
Low quiescent current
SOP8 package
Application
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Package material is Pb-Free Product &
RoHS compliant for the purpose of
environmental protection and for
sustainable development of the earth.
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Robotics (R/C servo, Sweeping
robot)
Toys (R/C car, R/C aircraft)
Any relevant DC motor applications.
BL5612 Package & Simplified Application
Device Information
Part No.
BL5612
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Package
SOP8
Quantity
4000
1
Operation Temp.
-40~85゜C
V1.0
BL5612
Pin Descriptions
NO.
1
2
3
4
5
6
7
NAME
NC
INA
INB
NC
GND
OUTB
OUTA
TYPE
NC
I
I
NC
P
O
O
8
VM
P
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DESCRIPTION
No Connection
Input INA
Input INB
No Connection
Ground
Output OUTB
Output OUTA,Connection 0.1uF between OUTA and OUTB
Power Supply for H-Bridge,Connection 10uF or bigger
capacitor between VDD and GND
2
V1.0
BL5612
Absolute Maximum Ratings (TA=25℃)
Parameter
Min.
Max.
Power Supply
VM
-0.3
30.0
Input Logic
INA, INB
-0.3
7.0
ESD(HBM)
VM, INA, INB, OUTA, OUTB
4.0
Operation temp.
TJ
-40
150
Storage temp.
Tstg
-65
150
Thermal resistance
θJA
Unit
V
kV
C
160
°C/W
Max.
Unit
Recommended operating conditions (TA=25℃)
Parameter
Min.
Power Supply
VM
3.0
25.0
Input Logic
INA, INB
0
5.0
Output Contiguous
IOUTA, IOUTB
0
1.5*
Current
Notes: * Using 25mm2 FR4 Signal layer PCB (1 oz) under VM=7.2V test.
V
A
Electrical Characteristics (VM=7.2V, TA=25゜C, RLOAD=20)
Parameter
H-Bridge FETs
ON Resistance
INA/INB
Input high level
voltage
Input low level
voltage
Pull down
resistance
Supply Current
Standby current
Operation current
RDSON
Test
Condition
IOUT=1.0A
Typ.
Max.
Unit
Ω
0.35
VINH
1.5
5.0
VINL
0
0.7
V
RPD
IVM_OFF
IVM_ON
INA=INB=0
Thermal Protection
Thermal shutdown
TOTSD
protection
Thermal shutdown
THYS
hysteresis
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Min.
100
200
KΩ
1.5
2.0
10
4.0
uA
mA
160
ºC
50
3
V1.0
BL5612
Block Diagram
Truth Table
INA
L
H
L
H
INB
L
L
H
H
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OUTA
Hi-Z
H
L
L
OUTB
Hi-Z
L
H
L
Mode
Stop
Forward
Reverse
Brake
4
Supply Current
IVM_OFF
IVM_ON
IVM_ON
IVM_ON
V1.0
BL5612
Application Notes:
1. Schematic Descriptions
Notes :
1. This simplified schematic is only as reference in DC motor driver application.
2. C0,C1: Power supply VM pin capacitor:
1) The capacitor can reduce the power spike when the motor is in motion. To avoid
the IC directly damaged by the VM peak voltage. It also can stabilize the power
supply voltage and reduce its ripples.
2) The C0 capacitor can compensate power when motor starts running.
3) The capacitor value determines the stability of the VM during motor in motion. If the
large voltage power or a heavy loading motor is used, then a larger capacitor would
be needed.
4) On the PCB configuration, the C0,C1 must be mounted as close as possible to VM
pin .
3. C2:The across-motor capacitor
1) The C2 capacitors can reduce the power spike of motor in start running. A 0.1μF
capacitor is recommended.
2) The C2 capacitor must be added to the general application.
4. RS: The sense resistor in current sense application
1) Need to sense output current, the RS is recommended to added between IC GND
and PCB ground.
2) The C0, C1 negative terminal is recommend connection to IC GND.
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5
V1.0
BL5612
2. Operating Mode Descriptions
H-Bridge basic operating mode:
A) Stop mode
Definition:When INA=INB= L, then OUTA=OUTB=Hi-Z
B) Forward mode
Definition:When INA=H, INB=L, then OUTA=H, OUTB=L
C) Reverse mode
Definition:When INA=L, INB=H, then OUTB=H, OUTA=L
D) Brake mode
Definition:When INA=INB= H,then OUTA=OUTB=L
3. Protection Mechanisms Descriptions
1) Over-current protection (OCP)
While the IC conducts a large current, 4.5A (Typ.), the internal over-current protection
function will be triggered. The device enters protection mode of auto-recover to avoid
damaging IC and system.
2) Over-temperature protection
If the IC junction temperature exceeds 180 °C (Typ.), the internal over-temperature
protection function will be triggered, partial FETs in the H-bridge are disabled, that will
ensure the safety of customers' products. If the IC junction temperature falls to
120 °C(Typ.), the IC resumes automatically.
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6
V1.0
BL5612
Package
SOP8
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7
V1.0
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