LM4570 Single-EndedInput Motor Driver
嚜燉M4570
SNOSAV2C 每 APRIL 2006 每 REVISED APRIL 2013
LM4570 Single-Ended Input Motor Driver
Check for Samples: LM4570
FEATURES
DESCRIPTION
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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.
1
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
APPLICATIONS
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The LM4570 features fast turn on time, and a wide
input voltage range for precise speed control. A low
power
shutdown
mode
minimizes
power
consumption.
Mobile Phones
PDAs
Video Game Systems
Thermal and output short circuit protection prevents
the device from being damaged during fault
conditions.
KEY SPECIFICATIONS
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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 ?A (Typ)
Typical Application
CS
RF
VDD
RIN
IN
MOTOR
CONTROL SIGNAL
VO1
REF2
REF1
LM4570
CREF1
0.1 PF
ON
VO2
/SD
OFF
GND
Figure 1. Typical Motor Driver Application Circuit
1
2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright ? 2006每2013, Texas Instruments Incorporated
LM4570
SNOSAV2C 每 APRIL 2006 每 REVISED APRIL 2013
Connection Diagram
Top View
SHUTDOWN
8
VO2
7
REF1
1
6
GND
REF2
2
5
VDD
3
4
IN
VO1
Figure 2. Leadless Leadframe WSON Package
See Package Number NGP0008A
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings (1) (2)
Supply Voltage (3)
6.0V
?65∼C to +150∼C
Storage Temperature
?0.3V ≡ to VDD +0.3V
Voltage at Any Input Pin
Power Dissipation (4)
Internally Limited
(5)
2000V
ESD Susceptibility
ESD Susceptibility (6)
200V
Junction Temperature (TJMAX)
Thermal Resistance
(1)
(2)
(3)
(4)
(5)
(6)
150∼C
牟JA (WSON)
140∼C/W
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 specify specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which specify specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not specified for parameters where no limit is given; however, the typical value is a good indication
of device performance.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
All voltages are measured with respect to the ground pin, unless otherwise specified.
The maximum power dissipation must be de-rated at elevated temperatures and is dictated by TJMAX, 牟JC, and the ambient temperature
TA. The maximum allowable power dissipation is PDMAX = (TJMAX 每TA)/ 牟JA or the number given in the Absolute Maximum Ratings,
whichever is lower. For the LM4570, TJMAX = 150∼C and the typical 牟JA for the WSON package is 140∼C/W.
Human body model, 100pF discharged through a 1.5k? resistor.
Machine Model, 220pF每240pF discharged through all pins.
Operating Ratings
Temperature Range (TMIN ≒ TA ≒ TMAX)
?40∼C ≒ TA ≒ 85∼C
2.4V ≒ VDD ≒ 5.5V
Supply Voltage
2
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LM4570
SNOSAV2C 每 APRIL 2006 每 REVISED APRIL 2013
Electrical Characteristics VDD = 5V
(1) (2)
The following specifications apply for VDD = 5V, AV-BTL = 6dB unless otherwise specified. Limits apply for TA = 25∼C.
Parameter
IDD
Quiescent Power Supply Current
ISD
Shutdown Current
VIH
Logic Input High
VIL
Logic Input Low
VOS
Output Offset Voltage
IOUT
Output Current
TWU
Wake-up time
Limit (4) (5)
Units
(Limits)
VIN = 0V, IL = 0A, No Load
2.5
5.5
mA (max)
VIN = 0V, IL = 0A, RL = 30?
2.6
5.5
mA (max)
VSD = GND
0.1
1.5
?A (max)
1.4
V (min)
5
VOH, VOL ≒ 250mV
VOH
Output High Voltage
RL = 30? specified as
|VDD - VOH|
VOL
Output Low Voltage
RL = 30? specified as
|GND + VOH|
(1)
(2)
(3)
(4)
(5)
LM4570
Typ (3)
Test Conditions
0.4
V (max)
㊣35
mV (max)
268
mA
2.5
ms (max)
146
200
mV (max)
106
200
mV (max)
All voltages are measured with respect to the ground pin, unless otherwise specified.
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 specify specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which specify specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not specified for parameters where no limit is given; however, the typical value is a good indication
of device performance.
Typicals are measured at 25∼C and represent the parametric norm.
Limits are ensured to AOQL (Average Outgoing Quality Level).
Datasheet min/max specification limits are ensured by design, test, or statistical analysis.
Electrical Characteristics VDD = 3V
(1) (2)
The following specifications apply for VDD = 3V, AV-BTL = 6dB unless otherwise specified. Limits apply for TA = 25∼C.
Parameter
Test Conditions
LM4570
Typ
(3)
Limit (4) (5)
VIN = 0V, IL = 0A, No Load
1.9
4
VIN = 0V, IL = 0A, RL = 30?
1.95
4
VSD = GND
0.1
1.0
Units
(Limits)
IDD
Quiescent Power Supply Current
ISD
Shutdown Current (6)
VIH
Logic Input High
1.4
V (min)
VIL
Logic Input Low
0.4
V (max)
VOS
Output Offset Voltage
㊣35
mV (max)
IOUT
Output Current
TWU
Wake-up time
VOH
Output High Voltage
RL = 30? specified as
|VDD - VOH|
90
110
mV (max)
VOL
Output Low Voltage
RL = 30? specified as
|VDD - VOH|
63
110
mV (max)
(1)
(2)
(3)
(4)
(5)
(6)
5
VOH, VOL ≒ 200mV
mA (max)
?A (max)
192
mA
2.4
ms (max)
All voltages are measured with respect to the ground pin, unless otherwise specified.
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 specify specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which specify specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not specified for parameters where no limit is given; however, the typical value is a good indication
of device performance.
Typicals are measured at 25∼C and represent the parametric norm.
Limits are ensured to AOQL (Average Outgoing Quality Level).
Datasheet min/max specification limits are ensured by design, test, or statistical analysis.
Shutdown current is measured in a normal room environment. Exposure to direct sunlight will increase ISD by a maximum of 2米A.
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LM4570
SNOSAV2C 每 APRIL 2006 每 REVISED APRIL 2013
Typical Performance Characteristics
Output Low Voltage vs
Load Current VDD = 3V
Output Low Voltage vs
Load Current VDD = 5V
180
350
OUTPUT LOW VOLTAGE (mV)
OUTPUT LOW VOLTAGE (mV)
160
140
120
100
80
60
40
20
0
300
250
200
150
100
50
0
0
50
100
150
200
0
250
LOAD CURRENT (mA)
100
200
300
400
LOAD CURRENT (mA)
Figure 3.
Figure 4.
Output High Voltage vs
Load Current VDD = 3V
Output High Voltage vs
Load Current VDD = 5V
450
250
OUTPUT HIGH VOLTAGE (mV)
OUTPUT HIGH VOLTAGE (mV)
400
200
150
100
50
0
50
100
150
200
250
200
150
100
50
0
250
100
200
300
400
LOAD CURRENT (mA)
LOAD CURRENT (mA)
Figure 5.
Figure 6.
Output Voltage vs
Input Voltage VDD = 3V, RL = 20?
Output Voltage vs
Input Voltage VDD = 3V, RL = 30?
3
3
2
2
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
300
0
0
1
0
-1
-2
1
0
-1
-2
-3
-3
0
1
2
3
INPUT VOLTAGE (V)
0
1
2
3
INPUT VOLTAGE (V)
Figure 7.
4
350
Figure 8.
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LM4570
SNOSAV2C 每 APRIL 2006 每 REVISED APRIL 2013
Typical Performance Characteristics (continued)
Output Voltage vs
Input Voltage VDD = 5V, RL = 30?
6
6
4
4
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
Output Voltage vs
Input Voltage VDD = 5V, RL = 20?
2
0
-2
-4
2
0
-2
-4
-6
-6
0
1
2
3
4
0
5
1
2
Figure 9.
4
5
Figure 10.
Power Dissipation vs Supply Voltage
Supply Current vs Supply Voltage
100
3
90
RL = 20:
2.5
80
SUPPLY CURRENT (mA)
POWER DISSIPATION (mW)
3
INPUT VOLTAGE (V)
INPUT VOLTAGE ( V)
70
60
50
40
RL = 30:
30
20
2
1.5
1
0.5
10
0
2
3
4
5
0
6
2
SUPPLY VOLTAGE (V)
4
5
6
Figure 11.
Figure 12.
Slew Rate vs Supply Voltage RL = 30?
Shutdown Supply Current vs Supply Voltage
5
0.8
4.5
0.7
4
Fall Slew
Rate
3.5
SUPPLY CURRENT (PA)
SLEW RATE (V/us)
3
SUPPLY VOLTAGE (V)
3
2.5
2
Rise Slew
Rate
1.5
1
0.6
0.5
0.4
0.3
0.2
0.1
0.5
0
2
3
4
5
6
0
2
3
4
5
6
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Figure 13.
Figure 14.
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