TAS5421-Q1 Datasheet, PDF (1/33 Pages) Texas Instruments – Mono Automotive Digital-Audio Amplifier

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TAS5421-Q1
SLOS814C – MARCH 2014 – REVISED JANUARY 2015
TAS5421-Q1 22-W Mono Automotive Digital-Audio Amplifier With Load Dump and I²C
Diagnostics
1 Features
•1 Mono BTL Digital Power Amplifier
• 22-W Output Power at 10% THD+N Into 4 Ω
• 4.5-V to 18-V Operating Range
• 85% Efficiency Into 4 Ω
• Differential Analog Input
• Speaker Guard™ Speaker Protection With
Adjustable Power Limiter
• 75-dB Power-Supply Rejection Ratio (PSRR)
• Load Diagnostic Functions:
– Open and Shorted Output Load
– Output-to-Power and -Ground Shorts
• Protection and Monitoring Functions:
– Short-Circuit Protection
– 40-V Load Dump Protection per ISO-7637-2
– Output DC Level Detection While Music Is
Playing
– Overtemperature Protection
– Over- and Undervoltage Protection
• Thermally Enhanced 16-Pin HTSSOP (PWP)
Package With PowerPAD™ Package (Pad Down)
• Designed for Automotive EMC Requirements
• Qualified According to AEC-Q100 Grade 2
• ISO9000: 2002 TS16949 Certified
• –40°C to 125°C Ambient Temperature Range
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Simplified Block Diagram
System ^I2C
µP
IN_P
IN_N
OUTP
TAS5421-Q1
LC
OUTN
2 Applications
• Automotive Emergency Call (eCall) Amplifier
• Telematics Systems
• Instrument Cluster Systems
• Infotainment Audio
3 Description
The TAS5421-Q1 is a mono digital audio amplifier,
ideal for use in automotive emergency call (eCall),
telematics, instrument cluster, and infotainment
applications. The device provides up to 22 W into 4 Ω
at less than 10% THD+N from a 14.4-Vdc automotive
battery. The wide operating voltage range and
excellent efficiency make the device ideal for start-
stop support or running from a backup battery when
required. The integrated load-dump protection
reduces external voltage clamp cost and size, and
the onboard load diagnostics report the status of the
speaker through I²C.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TAS5421-Q1
HTSSOP (16) 5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
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Output Power Efficiency
90
80
70
60
50
40
30
20
10
2:
4:
0
0
5
10
15
20
25
Output Power (W)
D001
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.