SNOSAV2C – APRIL 2006 – REVISED APRIL 2013
LM4570 Single-Ended Input Motor Driver
Check for Samples: LM4570
•2 Output Short Circuit Protection
• High Output Current Capability
• Wide Output Voltage Range
• Fast Turn on Time
• Output Short Circuit Protection
• Low Power Shutdown Mode
• Minimum External Components
• Available in Space-Saving WSON Package
• Mobile Phones
• Video Game Systems
• High Output Current @ VDD = 3V: 192 mA
• Fast Turn On Time @ 3V: 2.4 ms
• Quiescent Power Supply Current @ 3V: 1.9 mA
• Shutdown Current: 0.1 µA (Typ)
The LM4570 is a single supply motor driver for
improved sensory experience in mobile phones and
other handheld devices. The LM4570 is capable of
driving up to 192mA while operating from a 3V
supply. Near rail-to-rail output swing under load
ensures sufficient voltage drive for most DC motors,
while the differential output drive allows the voltage
polarity across the motor to be reversed quickly.
Reversing the voltage gives the LM4570 the ability to
drive a motor both clock-wise and counter clock-wise
from a single supply.
The LM4570 features fast turn on time, and a wide
input voltage range for precise speed control. A low
power shutdown mode minimizes power
Thermal and output short circuit protection prevents
the device from being damaged during fault
Figure 1. Typical Motor Driver Application Circuit
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