Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - motor controllers Half-bridge (2) Parallel LLP EP 8

OFF

MOTOR

CONTROL SIGNAL

GND

/SD

REF1

REF2

VO1

VO2

0.1 PF

REF1

LM4570

www.ti.com

SNOSAV2C –APRIL 2006–REVISED APRIL 2013

LM4570 Single-Ended Input Motor Driver

Check for Samples: LM4570

FEATURES

DESCRIPTION

The LM4570 is a single supply motor driver for

• Output Short Circuit Protection

improved sensory experience in mobile phones and

• High Output Current Capability

other handheld devices. The LM4570 is capable of

• Wide Output Voltage Range

driving up to 192mA while operating from a 3V

supply. Near rail-to-rail output swing under load

• Fast Turn on Time

ensures sufficient voltage drive for most DC motors,

• Output Short Circuit Protection

while the differential output drive allows the voltage

• Low Power Shutdown Mode

polarity across the motor to be reversed quickly.

Reversing the voltage gives the LM4570 the ability to

• Minimum External Components

drive a motor both clock-wise and counter clock-wise

• Available in Space-Saving WSON Package

from a single supply.

The LM4570 features fast turn on time, and a wide

APPLICATIONS

input voltage range for precise speed control. A low

• Mobile Phones

power shutdown mode minimizes power

• PDAs

consumption.

• Video Game Systems

Thermal and output short circuit protection prevents

the device from being damaged during fault

KEY SPECIFICATIONS

conditions.

• High Output Current @ V

= 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)

Typical Application

Figure 1. Typical Motor Driver Application Circuit

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.

2All 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.

Summary of content (14 pages)

PAGE 1
LM4570 www.ti.com SNOSAV2C – APRIL 2006 – REVISED APRIL 2013 LM4570 Single-Ended Input Motor Driver Check for Samples: LM4570 FEATURES 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.
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LM4570 SNOSAV2C – APRIL 2006 – REVISED APRIL 2013 www.ti.com 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.
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LM4570 www.ti.com SNOSAV2C – APRIL 2006 – 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.
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LM4570 SNOSAV2C – APRIL 2006 – REVISED APRIL 2013 www.ti.com 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.
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LM4570 www.ti.com SNOSAV2C – APRIL 2006 – REVISED APRIL 2013 Typical Performance Characteristics (continued) Output Voltage vs Input Voltage VDD = 5V, RL = 30Ω 6 6 4 4 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) Output Voltage vs Input Voltage VDD = 5V, RL = 20Ω 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.
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LM4570 SNOSAV2C – APRIL 2006 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics (continued) Output Transition High to Low, Low to High VDD = 3V, 1V/div, 400ns/div Output Transition High to Low, Low to High VDD = 5V, 1V/div, 1μs/div VOUT+ VOUT+ VOUTVOUT- Figure 15. Figure 16. Turn-Off Time VDD = 5V, 2V/div, 1ms/div Turn-On Time VDD = 5V, 2V/div, 1ms/div Shutdown Voltage Shutdown Voltage VOUT- VOUT- Figure 17. 6 Figure 18.
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LM4570 www.ti.com SNOSAV2C – APRIL 2006 – REVISED APRIL 2013 APPLICATION INFORMATION BRIDGE CONFIGURATION EXPLANATION The LM4570 uses a bridged architecture that drives a load differentially. The BTL design offers several advantages over a single-ended design. The device outputs, VO1 and VO2, both source and sink current, which means that the polarity of the voltage across the motor can be reversed quickly (Figure 19).
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LM4570 SNOSAV2C – APRIL 2006 – REVISED APRIL 2013 www.ti.com 250 POWER DISSIPATION (mW) VDD = 5V 200 150 100 50 0 0 1 2 3 4 5 INPUT VOLTAGE (V) Figure 20. Power Dissipation vs. Input Voltage EXPOSED-DAP MOUNTING CONSIDERATIONS The LM4570 is available in an 8-pin WSON package which features an exposed DAP (die attach paddle).
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LM4570 www.ti.com SNOSAV2C – APRIL 2006 – REVISED APRIL 2013 DEMO BOARD LAYOUT C1 1 PF 5 R3 VDD 20 k: C2 R2 IN MOTOR CONTROL SIGNAL 3 REF2 2 20 k: SHORT 0: C3 REF1 1 VO1 4 LM4570 0.1 PF VO2 ON /SD OFF 7 8 R1 GND 6 OPEN Revision History Rev Date Description 1.0 04/13/06 Initial release. 1.01 07/28/09 Added the Ordering Information table. C 04/08/13 Changed layout of National Data Sheet to TI format.
PAGE 10
PACKAGE OPTION ADDENDUM www.ti.com 9-Aug-2013 PACKAGING INFORMATION Orderable Device Status (1) LM4570LQ/NOPB ACTIVE Package Type Package Pins Package Drawing Qty WQFN NGP 8 1000 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Device Marking (3) CU SN Level-3-260C-168 HR (4/5) -40 to 85 GC8 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE MATERIALS INFORMATION www.ti.com 12-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device LM4570LQ/NOPB Package Package Pins Type Drawing WQFN NGP 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 1000 178.0 12.4 Pack Materials-Page 1 2.2 B0 (mm) K0 (mm) P1 (mm) 2.2 1.0 8.0 W Pin1 (mm) Quadrant 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 12-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM4570LQ/NOPB WQFN NGP 8 1000 213.0 191.0 55.
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MECHANICAL DATA NGP0008A LQB08A (Rev B) www.ti.
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