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3A Single-CH DC Motor Driver Circuit RZ7899
Description
RZ7899 is a monolithic IC designed for driving bi-directional DC motor, It has
two pins of logic inputs for controlling the direction, forward and backward. It has a
3A current drive capability, and a low output saturation pressure drop and quiescent
current; built-in clamp diode to reverse the impact of the release of inductive load
current, Making it in the drive relays, DC motors, stepper motors or control the use of
switching power safe and reliable. RZ7899 motor drive for toy vehicles,
remote-controlled aircraft motor drive, automatic valve motor, electromagnetic lock
drive, precision instruments and other circuits.
Features
Low stand-by current. ≦2uA
Wide supply voltage range：3.0V~25.0V..
Built-in Brake Function
Thermal Shutdown protection
Short Circuit Protect Function
Over Current Limit Function
SOP8 Pb-Free package.
Pin Function
Pin NO Name Function
1 Bi Backward input
2 Fi Power supply
3 Gnd Ground
4 Vcc Vcc
5, 6 Fo Forward output
7, 8 Bo Backward output
Input Truth Table
2pin Finput 1pin Binput 5,6pin Foutput 7,8pin Boutput
H L H L
L H L H
H H L L
L L Open Open
无锡睿智微电子有限公司 2011.7 Tel. 0510-85898501 18061979821 Fax. 0510-85898500
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3A Single-CH DC Motor Driver Circuit RZ7899
Absolute Maximum Rating
Parameter Symbol Rating Unit
Maximum supply voltage Vcc(max) 28 V
Peak output current Iout(peak) 6 A
Operating Temperature Top -25~+85 ℃
Storage temperature Tstg -55~+150 ℃
Electrical Characteristics(Vcc=6V,Ta=25℃,unless otherwise specified)
Parameter Symbol
Operating oltage V
3.0 -- 25 V
OPR
Condition Min Typ Max Unit
stand-by current Is Vcc = 9V Vi = 0 2 uA
No-load oprating
current
High Output
Icc Vcc = 6V V1 =
3V
VH
Vcc = 6V Io =3A 5.5 5.7 5.9 V
OUT
2 4 7 mA
Voltage
Low Output
VL
Vcc = 6V Io = 3A 0.05 0.15 0.3 V
OUT
Voltage
High input Voltage ViH 2.2 3.0 6 V
Low input Voltage ViL 0.5 0.7 V
Input current Ii Vcc = 6V Vi = 3V 100 150 uA
Continuous output
current
Iout Around of the no.5,
no.6, & no.7,no.8
3 5 A
pins needs copper
to auxiliary heat
dissipation
Thermal shutdown
Totp 130 ℃
temperature
无锡睿智微电子有限公司 2011.7 Tel. 0510-85898501 18061979821 Fax. 0510-85898500
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3A Single-CH DC Motor Driver Circuit RZ7899
Application circuit
4
Vcc
C1
0.1u F
Vcc
C2
470uF
Drive
2
INF
I limit Control
Thermal
Shutdown
Drive
1
INR
Gnd
3
Test PCB Board
56
78
OUTF
OUTR
C3
0.1u F
M
GND
无锡睿智微电子有限公司 2011.7 Tel. 0510-85898501 18061979821 Fax. 0510-85898500
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3A Single-CH DC Motor Driver Circuit RZ7899
Package Type SOP8
无锡睿智微电子有限公司 2011.7 Tel. 0510-85898501 18061979821 Fax. 0510-85898500
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