lm48560tlx National Semiconductor Corporation, lm48560tlx Datasheet

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lm48560tlx

Manufacturer Part Number
lm48560tlx
Description
High Voltage Class H Ceramic Speaker Driver With Automatic Level Control
Manufacturer
National Semiconductor Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
lm48560tlx/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
© 2011 National Semiconductor Corporation
High Voltage Class H Ceramic Speaker Driver with
Automatic Level Control
General Description
The LM48560 is a high voltage, high efficiency, Class H driver
for ceramic speakers and piezo actuators. The LM48560’s
Class H architecture offers significant power savings com-
pared to traditional Class AB amplifiers. The device provides
30V
current from a 3.6V supply.
The LM48560 features National’s unique automatic level con-
trol (ALC) that provides output limiter functionality. The
LM48560 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 config-
ured through the I
gain and input mux are configured through a pair of logic in-
puts.
The LM48560 has a low power shutdown mode that reduces
quiescent current consumption to 0.1μA. The LM48560 is a
available in an ultra-small 16–bump micro SMD package
(1.97mm x 1.97mm).
Key Specifications
Ordering Information
Boomer
LM48560TL
LM48560TLX
■ 
■ 
■ 
■ 
Number
Output Voltage at V
Quiescent Power Supply Current
Power Dissipation at 25V
Shutdown current
P-P
Order
®
R
at 3.6V (ALC enabled)
is a registered trademark of National Semiconductor Corporation.
L
output drive while consuming just 4mA of quiescent
= 1.5μF+10Ω, THD+N
16 Bump µSMD
16 Bump µSMD
2
C interface. In hardware control mode, the
Package
DD
= 3.6V
P-P
1%
TLA16Z1A
TLA16Z1A
Package
Drawing
Number
301507
30V
Ordering Information Table
0.1μA (typ)
4mA (typ)
1W (typ)
P-P
2500 units on tape and reel
250 units on tape and reel
(typ)
LM48560
Transport Media
Features
Applications
Class H Topology
Integrated Boost Converter
Bridge-Tied Load (BTL) Output
Selectable Differential Inputs
Selectable Control Interfaces
(Hardware or Software mode)
I
Low Supply Current
Minimum External Components
Micro-Power Shutdown
Available in Space-Saving micro SMD Package
Touch screen Smart Phones
Tablet PCs
Portable Electronic Devices
MP3 Players
2
C Programmable ALC
MSL Level
1
1
RoHS & no Sb/Br
RoHS & no Sb/Br
Green Status
August 16, 2011
www.national.com

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lm48560tlx Summary of contents

Page 1

... Power Dissipation at 25V P-P ■  Shutdown current Ordering Information Order Package Number LM48560TL 16 Bump µSMD LM48560TLX 16 Bump µSMD Boomer ® registered trademark of National Semiconductor Corporation. © 2011 National Semiconductor Corporation LM48560 Features ■ Class H Topology ■ Integrated Boost Converter ■ ...

Page 2

Typical Application Connection Diagrams TL Package 1.97mm x 1.97mm x 0.6mm Top View Order Number LM48560TL See NS Package Number TLA16Z1A www.national.com FIGURE 1. Typical Application Circuit 16–Bump micro SMD Marking 30150704 2 30150733 30150739 Top View XY = Date ...

Page 3

Bump Name A1 OUT+ Amplifier Non-Inverting Output A2 SGND Amplifier Ground A3 IN1– Amplifier Inverting Input 1 A4 IN1+ Amplifier Non-Inverting Input 1 B1 OUT- Amplifier Inverting Output Active Low Shutdown. Connect SHDN to GND to disable device. B2 SHDN ...

Page 4

Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (Note 1) SW Voltage V Voltage BST Input Voltage Power Dissipation (Note 3) ESD Rating, Human ...

Page 5

Symbol Parameter V Output Voltage OUT THD+N Total Harmonic Distortion + Noise V Power Supply Rejection Ratio PSRR (Figure 2) Common Mode Rejection Ratio CMRR (Figure 3) SNR Signal-to-Noise-Ratio ε Output Noise OS T Attack Time A T Release time ...

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Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond ...

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Typical Performance Characteristics All typical performance curves are taken with conditions seen in THD+N vs FREQUENCY = 0.6μ 3.6V, Boosted THD+N vs FREQUENCY = 1.5μ 3.6V, Boosted THD+N ...

Page 8

OUTPUT VOLTAGE vs FREQUENCY ≤ = 1.5μF, THD THD+N vs OUTPUT VOLTAGE = 0.6μ 3.6V, Boosted THD+N vs OUTPUT VOLTAGE = 1.5μ 3.6V, Boosted www.national.com 1%, ...

Page 9

INPUT VOLTAGE vs OUTPUT VOLTAGE ALC Enabled 21dB TOTAL POWER CONSUMPTION vs OUTPUT VOLTAGE = 0.6μ 3.6V TOTAL POWER CONSUMPTION vs OUTPUT VOLTAGE = 1.5μ 3.6V ...

Page 10

POWER SUPPLY REJECTION RATIO vs FREQUENCY V = 200mV , V RIPPLE P-P DD www.national.com = 1.5μF = 3.6V 30150742 10 ...

Page 11

Application Information READ/WRITE COMPATIBLE INTERFACE The LM48560 is controlled through an I interface that consists of a serial data line (SDA) and a serial clock (SCL). The clock line is uni-directional. The data line is bi-directional (open ...

Page 12

WRITE SEQUENCE The example write sequence is shown in START signal, the transition of SDA from HIGH to LOW while SDA is HIGH, is generated, altering all devices on the bus that a device address is being written to the ...

Page 13

B7 B6 Device Address 1 1 SW/HW SDA/SEL 0 (Boost Disabled (Boost Enabled REGISTER Register B7 ADDRESS Name SHUTDOWN 0x00h X CONTROL NO CLIP 0x01h X CONTROL 0x02h GAIN CONTROL X 0x03h TEST MODE X BIT ...

Page 14

BIT NAME B7 UNUSED RLT1 (B6) B6:B5 RLT0 (B5) ATK1 (B4) B4:B3 ATK0 (B3) PLEV2 (B2) B2:B0 PLEV1 (B1) PLEV0 (B0) BIT NAME B7:B2 UNUSED GAIN1(B1) B1:B0 GAIN0 (B0) GAIN1(B1) B1:B0 GAIN0 (B0) www.national.com TABLE 6. No Clip Control Register ...

Page 15

GENERAL AMPLIFIER FUNCTION The LM48560 is a fully differential, Class H piezo driver for ceramic speakers and haptic actuators. The integrated, high efficiency boost converter dynamically adjusts the amplifier’s supply voltage based on the output signal, increasing head- room and ...

Page 16

RELEASE TIME Release time ( the time it takes for the gain to return RL from 6dB to its normal level once the audio signal returns be- low the ALC threshold. A fast release time allows the ALC ...

Page 17

SINGLE-ENDED INPUT CONFIGURATION The LM48560 is compatible with single-ended sources. When configured for single-ended inputs, input capacitors must be used to block and DC component at the input of the device. PROPER SELECTION OF EXTERNAL COMPONENTS ALC Timing (C ) ...

Page 18

DEMO BOARD USER GUIDE Quick Start Guide (Hardware Mode): 1. Short pins 1 (VDD) and 2 of JU1 for normal operation. 2. Short pins 2 and 3(GND) of JU7 to set the device in hardware mode. 3. Short pins 2 ...

Page 19

Designator Function VDD VDD GND GND OUT+ OUTPUT OUT- OUTPUT IN1+ INPUT 1 IN1- INPUT 1 IN2+ INPUT 2 IN2- INPUT 2 JU1 Shutdown JU2 SCL/Gain Select JU3 SDA/Input Select JU4 SCL Pullup JU5 SDA pullup JU6 I2C VDD JU7 ...

Page 20

Demo Board Schematic www.national.com 20 30150779 ...

Page 21

PC Board Layout Top Silk Screen Top Layer Layer 3 30150769 30150772 30150765 21 30150771 Solder Mask Top 30150766 Layer 2 30150764 Drill Drawing www.national.com ...

Page 22

Silk Bottom Bottom Layer www.national.com 30150768 30150763 22 30150770 Solder Mask Bottom ...

Page 23

Revision History Rev Date 1.0 08/16/11 Description Initial WEB released. 23 www.national.com ...

Page 24

Physical Dimensions X1 = 1.970±0.03mm www.national.com inches (millimeters) unless otherwise noted Thin micro SMD Order Number LM48560TL NS Package Number TLA16Z1A     1.970±0.03mm X3 = 0.600±0.075mm 24 ...

Page 25

Notes 25 www.national.com ...

Page 26

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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