LM48580TLX/NOPB

Manufacturer Part NumberLM48580TLX/NOPB
DescriptionIC AMP AUDIO SPEAKER DVR 12USMD
ManufacturerNational Semiconductor
SeriesBoomer®, PowerWise®
TypeClass H
LM48580TLX/NOPB datasheet
 


Specifications of LM48580TLX/NOPB

Output Type1-Channel (Mono)Voltage - Supply2.5 V ~ 5.5 V
FeaturesDifferential Inputs, Shutdown, Thermal ProtectionMounting TypeSurface Mount
Package / Case12-MicroSMDLead Free Status / RoHS StatusLead free / RoHS Compliant
Max Output Power X Channels @ Load-Other namesLM48580TLXTR
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High Efficiency Class H, High Voltage, Haptic Piezo
Actuator / Ceramic Speaker Driver
General Description
The LM48580 is a fully differential, high voltage driver for
piezo actuators and ceramic speakers for portable multi-me-
dia devices. Part of National’s Powerwise product line, the
LM48580’s Class H architecture offers significant power sav-
ings compared to traditional Class AB amplifiers. The device
provides 30V
output drive while consuming just 15mW of
P-P
quiescent power.
The LM48580 is a single supply driver with an integrated
boost converter which allows the device to deliver 30V
a single 3.6V supply.
The LM48580 has three pin-programmable gain settings and
a low power Shutdown mode that reduces quiescent current
consumption to 0.1µA. The LM48580 is available in an ultra-
small 12-bump micro SMD package (1.46mm x 1.97mm).
Key Specifications
■ 
Output Voltage at V
= 3.6V
DD
= 6μF+10Ω, THD+N
R
1%
L
■ 
Quiescent Power Supply current
at 3.6V
■ 
Power Dissipation at 25V
P-P
■ 
Shutdown current
Typical Application
Boomer
®
is a registered trademark of National Semiconductor Corporation.
© 2010 National Semiconductor Corporation
LM48580
Features
Class H Driver
Integrated Boost Converter
Bridge-tied Load Output
Differential Input
Three Pin-Programmable Gains
Low Supply Current
Minimum external components
from
Micro-power shutdown
P-P
Thermal overload protection
Available in space-saving 12-bump microSMD package
Applications
Touch screen Smart Phones
Tablet PCs
Portable Electronic Devices
MP3 Players
30V
(typ)
P-P
2.7mA (typ)
800mW (typ)
0.1μA (typ)
FIGURE 1. Typical Application Circuit
301080
February 23, 2010
30108070
www.national.com

LM48580TLX/NOPB Summary of contents

  • Page 1

    ... Quiescent Power Supply current at 3.6V ■  Power Dissipation at 25V P-P ■  Shutdown current Typical Application Boomer ® registered trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation LM48580 Features ■ Class H Driver ■ Integrated Boost Converter ■ Bridge-tied Load Output ■ ...

  • Page 2

    Connection Diagrams TL Package 1.46mm x 1.97mm x 0.6mm Top View Order Number LM48580TL See NS Package Number TLA12Z1A www.national.com 12–Bump micro SMD Marking 30108071 TLA12 Package View (Bumps Up) 2 30108072 Top View XY = Date code TT = ...

  • Page 3

    Ordering Information Package Order Package Drawing Number Number LM48580TL 12 Bump µSMD TLA12Z1A LM48580TLX 12 Bump µSMD TLA12Z1A Pin Descriptions Bump Name A1 OUT+ A2 SGND A3 IN+ B1 OUT- B2 GAIN B3 IN AMP C2 SHDN V ...

  • 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 VBST Voltage V AMP Input Voltage Power Dissipation (Note 3) ESD Rating, Human Body Model (Note 4) ESD Rating, Machine Model ...

  • Page 5

    Symbol Parameter Boost Converter Switching f SW Frequency I Boost Converter Current Limit LIMIT V Logic High Input Threshold IH V Logic Low Input Threshold IL I Input Leakage Current IN Note 1: “Absolute Maximum Ratings” indicate limits beyond which ...

  • Page 6

    Typical Performance Characteristics THD+N vs Frequency V = 3.6V OUT = 6μF + 10Ω Output Voltage vs Frequency V = 3.6V, THD 6μF + 10Ω THD+N vs Output Voltage = ...

  • Page 7

    Power Consumption vs Output Voltage = 6μF + 10Ω 3.6V 30108015 Output Voltage vs Supply Voltage = 6μF + 10Ω 200Hz R L 30108017 CMRR vs Frequency V = 3.6V ...

  • Page 8

    Application Information GENERAL AMPLIFIER FUNCTION The LM48580 is a fully differential, Class H ceramic element driver for ceramic speakers and haptic actuators. The inte- grated, high efficiency boost converter dynamically adjusts the amplifier’s supply voltage based on the output signal, ...

  • Page 9

    SHUTDOWN FUNCTION The LM48580 features a low current shutdown mode. Set SD = GND to disable the amplifier and boost converter and reduce supply current to 0.01µA. PROPER SELECTION OF EXTERNAL COMPONENTS Boost Converter Capacitor Selection The LM48580 boost converter ...

  • Page 10

    Demoboard Bill of Materials DESIGNATOR QUANTITY C5 UNSTUFFED JU1, JU2 2 LM48580TL 1 www.national.com TABLE 4. Demoboard Bill of Materials DESCRIPTION 10µF ±10% ...

  • Page 11

    Demo Board Schematic 11 30108006 www.national.com ...

  • Page 12

    PC Board Layout Top Silk Screen Layer 2 Bottom Silkscreen www.national.com 30108008 Top Layer 30108003 30108002 Bottom Layer 12 30108007 30108005 Layer 3 30108001 ...

  • Page 13

    Revision History Rev Date 1.0 02/23/10 Description Initial released. 13 www.national.com ...

  • Page 14

    Physical Dimensions X1 = 1.463±0.03mm www.national.com inches (millimeters) unless otherwise noted Thin micro SMD Order Number LM48580TL NS Package Number TLA12Z1A     1.970±0.03mm X3 = 0.600±0.075mm 14 ...

  • Page 15

    Notes 15 www.national.com ...

  • Page 16

    ... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...