LM48580TLX Datasheet, PDF (1/19 Pages) Texas Instruments – LM48580 Boomer™ Audio Power Amplifier Series High Efficiency Class H, High Voltage, Haptic Piezo Actuator / Ceramic Speaker Driver

LM48580
www.ti.com
SNAS491A – FEBRUARY 2010 – REVISED MAY 2013
LM48580 Boomer™ Audio Power Amplifier Series High Efficiency Class H, High Voltage,
Haptic Piezo Actuator / Ceramic Speaker Driver
Check for Samples: LM48580
FEATURES
1
•23 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
APPLICATIONS
• Touch Screen Smart Phones
• Tablet PCs
• Portable Electronic Devices
• MP3 Players
KEY SPECIFICATIONS
• Output Voltage at V_DD = 3.6V, R_L = 6μF+10Ω,
THD+N ≤ 1%
– 30V_P-P (Typ)
• Quiescent Power Supply Current at 3.6V
– 2.7mA (Typ)
• Power Dissipation at 25V_P-P
– 800mW (Typ)
• Shutdown Current
– 0.1μA (Typ)
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’s Class H architecture offers
significant power savings compared to traditional
Class AB amplifiers. The device provides 30V_P-P
output drive while consuming just 15mW of quiescent
power.
The LM48580 is a single supply driver with an
integrated boost converter which allows the device to
deliver 30V_P-P from 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
DSBGA package (1.46mm x 1.97mm).
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Boomer is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010–2013, Texas Instruments Incorporated