LM48580TLX/NOPB National Semiconductor, LM48580TLX/NOPB Datasheet

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LM48580TLX/NOPB

Manufacturer Part Number
LM48580TLX/NOPB
Description
IC AMP AUDIO SPEAKER DVR 12USMD
Manufacturer
National Semiconductor
Series
Boomer®, PowerWise®r
Type
Class Hr
Datasheet

Specifications of LM48580TLX/NOPB

Output Type
1-Channel (Mono)
Voltage - Supply
2.5 V ~ 5.5 V
Features
Differential Inputs, Shutdown, Thermal Protection
Mounting Type
Surface Mount
Package / Case
12-MicroSMD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Max Output Power X Channels @ Load
-
Other names
LM48580TLXTR

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM48580TLX/NOPB
Manufacturer:
TI/德州仪器
Quantity:
20 000
Part Number:
LM48580TLX/NOPB
Manufacturer:
TI
Quantity:
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Part Number:
LM48580TLX/NOPB
Manufacturer:
NS
Quantity:
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Company:
Part Number:
LM48580TLX/NOPB
Quantity:
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© 2010 National Semiconductor Corporation
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
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
Typical Application
Boomer
■ 
■ 
■ 
■ 
Output Voltage at V
Quiescent Power Supply current
Power Dissipation at 25V
Shutdown current
®
R
at 3.6V
is a registered trademark of National Semiconductor Corporation.
L
= 6μF+10Ω, THD+N
P-P
output drive while consuming just 15mW of
DD
= 3.6V
P-P
1%
301080
FIGURE 1. Typical Application Circuit
800mW (typ)
30V
2.7mA (typ)
0.1μA (typ)
P-P
P-P
(typ)
from
LM48580
Features
Applications
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 microSMD package
Touch screen Smart Phones
Tablet PCs
Portable Electronic Devices
MP3 Players
30108070
February 23, 2010
www.national.com

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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 ...

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