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2A Single-CH DC Motor Driver Circuit RZ7888
Description
RZ7888 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
2A 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. RZ7888 motor drive for toy vehicles,
remote-controlled aircraft motor drive, automatic valve motor, electromagnetic lock
drive, precision instruments and other circuits.
Features
z Low stand-by current. ≦2uA
z Wide supply voltage range：3.0V~11.0V..
z Built-in Brake Function
z Thermal Shutdown protection
z Short Circuit Protect Function
z Over Current Limit Function
z 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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2A Single-CH DC Motor Driver Circuit RZ7888
Absolute Maximum Rating
Parameter Symbol Rating Unit
Maximum supply voltage Vcc(max) 12 V
Peak output current Iout(peak) 4.2 A
Operating Temperature T op -25~+85 ℃
Storage temperature Tstg -55~+150 ℃
Electrical Characteristics(Vcc=6V,Ta=25℃,unless otherwise specified)
Parameter Symbol Condition Min Typ Max Unit
Operating oltage V
stand-by current Is Vcc = 9V Vi = 0 2 uA
3.0 -- 11 V
OPR
No-load oprating
current
High Output
Icc Vcc = 6V V1 =
3V
VH
Vcc = 6V Io =2A 5.5 5.7 5.9 V
OUT
2 4 7 mA
Voltage
Low Output
VL
Vcc = 6V Io = 2A 0.05 0.15 0.3 V
OUT
Voltage
High input Voltage ViH 2.2 3.5 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
2 4 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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2A Single-CH DC Motor Driver Circuit RZ7888
Application circuit
4
Vcc
C1
0.1uF
Vcc
C2
470uF
Drive
2
INF
I l i m it Co ntrol
Thermal
Shutdown
Drive
1
INR
Gnd
56
78
3
Test PCB Board
OUTF
M
OUTR
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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2A Single-CH DC Motor Driver Circuit RZ7888
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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