LM4570 Datasheet PDF - National Semiconductor

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LM4570
National Semiconductor

Part Number LM4570
Description Single-Ended Input Motor Driver
Page 12 Pages


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April 2006
LM4570
Single-Ended Input Motor Driver
General Description
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.
www.DataSheet4U.cRoemversing 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 shut-
down mode minimizes power consumption.
Thermal and output short circuit protection prevents the
device from being damaged during fault conditions.
Key Specifications
j High Output Current @ VDD = 3V
j Fast Turn On Time @ 3V
j Quiescent Power Supply Current @ 3V
j Shutdown Current
Features
n Output Short Circuit Protection
n High Output Current Capability
n Wide Output Voltage Range
n Fast Turn on Time
n Output Short Circuit Protection
n Low Power Shutdown Mode
n Minimum external components
n Available in space-saving LLP package
Applications
n Mobile Phones
n PDAs
n Video Game Systems
192mA
2.4ms
1.9mA
0.1µA (typ)
Typical Application
FIGURE 1. Typical Motor Driver Application Circuit
20186326
© 2006 National Semiconductor Corporation DS201863
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Connection Diagrams
Leadless Leadframe Package (LLP)
LQ Package
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Top View
Order Number LM4570LQ
See NS Package Number LQB08A
LLP Marking
20186325
Top View
X - One digit date code
TT - Lot traceability
G - Boomer Family
C8 - LM4570LQ
20186327
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Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (Note 1)
Storage Temperature
Voltage at Any Input Pin
Power Dissipation (Note 3)
ESD Susceptibility (Note 4)
ESD Susceptibility (Note 5)
6.0V
−65˚C to +150˚C
−0.3V to VDD +0.3V
Internally Limited
2000V
200V
Junction Temperature (TJMAX)
Thermal Resistance
θJA (LLP)
Operating Ratings
Temperature Range
TMIN TA TMAX
Supply Voltage
150˚C
140˚C/W
−40˚C TA 85˚C
2.4V VDD 5.5V
Electrical Characteristics VDD = 5V (Notes 1, 2)
The following specifications apply for VDD = 5V, AV-BTL = 6dB unless otherwise specified. Limits apply for TA = 25˚C.
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Parameter
Conditions
IDD
ISD
VIH
VIL
VOS
IOUT
TWU
VOH
VOL
Quiescent Power Supply Current
Shutdown Current
Logic Input High
Logic Input Low
Output Offset Voltage
Output Current
Wake-up time
Output High Voltage
Output Low Voltage
VIN = 0V, IL = 0A, No Load
VIN = 0V, IL = 0A, RL = 30
VSD = GND
VOH, VOL 250mV
RL = 30specified as
|VDD - VOH|
RL = 30specified as
|GND + VOH|
LM4570
Typical
Limit
(Note 6)
(Notes 7, 8)
2.5 5.5
2.6 5.5
0.1 1.5
1.4
0.4
5 ±35
268
2.5
146 200
Units
(Limits)
mA (max)
µA (max)
V (min)
V (max)
mV (max)
mA
ms (max)
mV (max)
106 200 mV (max)
Electrical Characteristics VDD = 3V (Notes 1, 2)
The following specifications apply for VDD = 3V, AV-BTL = 6dB unless otherwise specified. Limits apply for TA = 25˚C.
Symbol
Parameter
Conditions
IDD
ISD
VIH
VIL
VOS
IOUT
TWU
VOH
VOL
Quiescent Power Supply Current
Shutdown Current
Logic Input High
Logic Input Low
Output Offset Voltage
Output Current
Wake-up time
Output High Voltage
Output Low Voltage
VIN = 0V, IL = 0A, No Load
VIN = 0V, IL = 0A, RL = 30
VSD = GND
VOH, VOL 200mV
RL = 30specified as
|VDD - VOH|
RL = 30specified as
|VDD - VOH|
LM4570
Typical
Limit
(Note 6)
(Notes 7, 8)
1.9 4
1.95
4
0.1 1.0
1.4
0.4
5 ±35
192
2.4
90 110
Units
(Limits)
mA (max)
µA (max)
V (min)
V (max)
mV (max)
mA
ms (max)
mV (max)
63 110 mV (max)
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Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given; however, the typical value is a good indication of device performance.
Note 3: The maximum power dissipation must be de-rated at elevated temperatures and is dictated by TJMAX, θJC, and the ambient temperature TA. The maximum
allowable power dissipation is PDMAX = (TJMAX –TA)/ θJA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4570, TJMAX = 150˚C
and the typical θJA for the LLP package is 140˚C/W.
Note 4: Human body model, 100pF discharged through a 1.5kresistor.
Note 5: Machine Model, 220pF–240pF discharged through all pins.
Note 6: Typicals are measured at 25˚C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9: Shutdown current is measured in a normal room environment. Exposure to direct sunlight will increase ISD by a maximum of 2µA.
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