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LM48580 Datasheet Preview

LM48580 Datasheet

Haptic Piezo Actuator / Ceramic Speaker Driver

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LM48580
SNAS491B – FEBRUARY 2010 – REVISED FEBRUARY 2018
LM48580 Boomer™ Audio Power Amplifier Series High Efficiency Class H, High Voltage,
Haptic Piezo Actuator / Ceramic Speaker Driver
1 Features
1 Class H Driver
• Integrated Boost Converter
• Bridge-tied Load Output
• Differential Input
• Three Pin-Programmable Gains
• Low Supply Current
• Minimum External components
• Micro-Power Shutdown
• Thermal Overload Protection
• Available in Space-Saving 12-bump DSBGA
Package
2 Applications
• Touch Screen Smart Phones
• Tablet PCs
• Portable Electronic Devices
• MP3 Players
• Key Specifications:
– Output Voltage at VDD = 3.6 V,
RL = 6 μF + 10 , THD+N 1%
– 30 VP-P (Typical)
– Quiescent Power Supply Current at 3.6 V
– 2.7 mA (Typical)
– Power Dissipation at 25 VP-P
– 800 mW (Typical)
– Shutdown Current
– 0.1 μA (Typical)
3 Description
The LM48580 is a fully differential, high voltage driver
for piezo actuators and ceramic speakers for portable
multi-media devices. Part of TI’s Powerwise™
product line, the LM48580 Class H architecture offers
significant power savings compared to traditional
Class AB amplifiers. The device provides 30 VP-P
output drive while consuming just 15 mW of
quiescent power.
The LM48580 is a single supply driver with an
integrated boost converter which allows the device to
deliver 30 VP-P from a single 3.6 V supply.
The LM48580 has three pin-programmable gain
settings and a low power Shutdown mode that
reduces quiescent current consumption to 0.1 µA.
The LM48580 is available in an ultra-small 12-bump
DSBGA package.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM48580
DSBGA
2.00 mm x 1.80 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application
+2.5V to +5.5V
L1
D1
4.7 PH
CS
VDD
SW
BOOST
CONVERTER
VBST
PGND
CBST
1 PF
SHDN
CIN
0.47 PF IN+
CIN IN-
0.47 PF
GAIN
GAIN
STAGE
OUTPUT
STAGE
VAMP
10:
OUT-
OUT+
SGND
Copyright © 2018, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

LM48580 Datasheet Preview

LM48580 Datasheet

Haptic Piezo Actuator / Ceramic Speaker Driver

No Preview Available !

LM48580
SNAS491B – FEBRUARY 2010 – REVISED FEBRUARY 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
7 Absolute Maximum Ratings.................................. 4
8 ESD Ratings ........................................................... 4
9 Recommended Operating Conditions ................. 4
10 Thermal Information.............................................. 4
11 Electrical Characteristics: VDD = 3.6 V............... 5
11.1 Typical Performance Characteristics ...................... 6
12 Parameter Measurement Information.................. 8
13 Detailed Description ............................................. 9
13.1 Overview ................................................................. 9
13.2 Functional Block Diagram ....................................... 9
13.3 Feature Description................................................. 9
13.4 Device Functional Modes...................................... 10
14 Application and Implementation........................ 11
14.1 Application Information.......................................... 11
14.2 Typical Application ............................................... 11
15 Power Supply Recommendations ..................... 12
16 Layout................................................................... 13
16.1 Layout Guidelines ................................................. 13
16.2 Layout Example .................................................... 13
17 Device and Documentation Support ................. 14
17.1 Device Support .................................................... 14
17.2 Receiving Notification of Documentation Updates 14
17.3 Community Resources.......................................... 14
17.4 Trademarks ........................................................... 14
17.5 Electrostatic Discharge Caution ............................ 14
17.6 Glossary ................................................................ 14
18 Mechanical, Packaging, and Orderable
Information ........................................................... 14
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (May 2013) to Revision B
Page
• Added Device Information table, ESD table, Thermal Information table, Parameter Measurement Information,
Feature Description, Device Functional Modes, Power Supply Recommendations, Layout section, Device and
Documentation Support, and Mechanical, Packaging, and Orderable Information................................................................ 1
• Deleted the Demoboard Bill of Materials section ................................................................................................................. 12
• Deleted the Demo Board Schematic section........................................................................................................................ 12
Changes from Original (February 2010) to Revision A
Page
• Changed layout of National Data Sheet to TI format. ............................................................................................................ 1
2
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Product Folder Links: LM48580
Copyright © 2010–2018, Texas Instruments Incorporated



Part Number LM48580
Description Haptic Piezo Actuator / Ceramic Speaker Driver
Maker etcTI
Total Page 3 Pages
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LM48580 Datasheet PDF





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