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LM48560 Datasheet Preview

LM48560 Datasheet

Ceramic Speaker Driver

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LM48560
SNAS513F – AUGUST 2011 – REVISED NOVEMBER 2015
LM48560 Boomer™ Audio Power Amplifier Series High Voltage Class H Ceramic Speaker
Driver With Automatic Level Control
1 Features
1 Class H Topology
• Integrated Boost Converter
• Bridge-Tied Load (BTL) Output
• Selectable Differential Inputs
• Selectable Control Interfaces
– (Hardware or Software mode)
• I2C Programmable ALC
• Low Supply Current
• Minimum External Components
• Micro-Power Shutdown
• Available in Space-Saving DSBGA Package
• Key Specifications:
– Output Voltage at VDD = 3.6 V,
RL = 1.5 μF + 10 , THD+N 1%
– 30 VP-P (Typical)
– Quiescent Power Supply Current
at 3.6 V (ALC Enabled)
– 4 mA (Typical)
– Power Dissipation at 25 VP-P, 1 W (Typical)
– Shutdown Current, 0.1 μA (Typical)
2 Applications
• Touch Screen Smart Phones
• Tablet PCs
• Portable Electronic Devices
• MP3 Players
3 Description
The LM48560 device is a high voltage, high
efficiency, Class H driver for ceramic speakers and
piezo actuators. The LM48560 device’s Class H
architecture offers significant power savings
compared to traditional Class AB amplifiers. The
device provides 30 VP-P output drive while consuming
just 4 mA of quiescent current from a 3.6 V supply.
The LM48560 device features TI’s unique automatic
level control (ALC) that provides output limiter
functionality. The LM48560 device features two fully
differential inputs with separate gain settings, and a
selectable control interface. In software control mode,
the gain control and device modes are configured
through the I2C interface. In hardware control mode,
the gain and input mux are configured through a pair
of logic inputs.
The LM48560 device has a low power shutdown
mode that reduces quiescent current consumption to
0.1 μA. The LM48560 device is available in an ultra-
small 16–bump DSBGA package (1.97 mm × 1.97
mm).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM48560
DSBGA (16)
1.97 mm × 1.97 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Circuit
+2.7V to +5.5V
L1
D1
4.7 PH
CS
SCL/GAIN
SDA/SEL
SW/HW
SHDN
CIN
0.47 PF
CIN
0.47 PF
CIN
0.47 PF
CIN
0.47 PF
IN1+
IN1-
IN2+
IN2-
I2C
INTERFACE
MUX/
GAIN
STAGE
VDD
SW
BOOST
CONVERTER
ALC
SGND
VBST
PGND
OUT-
OUT+
SET
CBST
1 PF
RL
10:
CL
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

LM48560 Datasheet Preview

LM48560 Datasheet

Ceramic Speaker Driver

No Preview Available !

LM48560
SNAS513F – AUGUST 2011 – REVISED NOVEMBER 2015
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
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Electrical Characteristics VDD = 3.6 V ....................... 5
6.5 I2C Interface Characteristics ..................................... 6
6.6 Typical Characteristics .............................................. 7
7 Parameter Measurement Information ................ 10
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 13
8.5 Programming .......................................................... 14
8.6 Register Maps ......................................................... 15
9 Application and Implementation ........................ 17
9.1 Application Information............................................ 17
9.2 Typical Application ................................................. 17
10 Power Supply Recommendations ..................... 20
11 Layout................................................................... 20
11.1 Layout Guidelines ................................................. 20
11.2 Layout Example .................................................... 20
12 Device and Documentation Support ................. 21
12.1 Community Resources.......................................... 21
12.2 Trademarks ........................................................... 21
12.3 Electrostatic Discharge Caution ............................ 21
12.4 Glossary ................................................................ 21
13 Mechanical, Packaging, and Orderable
Information ........................................................... 21
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Rev
Date
Description
1.0
08/16/11
Initial WEB released.
1.01
09/21/11
Input edits under CLASS H OPERATION.
1.02
11/01/11
Edited curves 30150753, 54, 55, 56, and Figure 26 (I2C Read Cycle).
1.03
11/10/11
Edited Figure 26.
1.04
07/25/12
Input texts/limits edits in the EC table.
1.05
08/22/12
Edited Table 1 and Table 2.
E
05/02/2013
Changed layout of National Data Sheet to TI format.
F
10/21/2015
Added ESD Ratings table, Feature Description section, Device Functional Modes, Application
and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information
section.
2
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Copyright © 2011–2015, Texas Instruments Incorporated



Part Number LM48560
Description Ceramic Speaker Driver
Maker etcTI
Total Page 3 Pages
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