RT9108NL Datasheet, PDF (1/13 Pages) Richtek Technology Corporation – 9W Stereo Class-D Audio Power Amplifier

®
RT9108NL
9W Stereo Class-D Audio Power Amplifier
General Description
The RT9108NL is a high efficiency Class D stereo audio
amplifier for driving Bridge Tied Load (BTL) speakers. The
RT9108NL can drive stereo speakers with load as low as
4Ω. Its high efficiency eliminates the need for an extra
heat sink when playing music. The gain of the amplifier
can be controlled by two gain select pins. The outputs
are fully protected against shorts to GND, PV_CC, and
output to output with an auto recovery feature and
monitored output.
Features
z 8V to 16V Input Supply Range
z 9W/CH into an 8Ω Load from 12V Supply at 10%
THD+N
z 88% Efficiency Eliminates Need for Heat Sinks
z Four Selectable or Fixed Gain Settings
z Robust Pin-to-Pin Short Circuit Protection
z Thermal Protection with Auto Recovery Option
z Surface Mount TSSOP-28 (Exposed Pad) Package
z RoHS Compliant and Halogen Free
Ordering Information
Applications
RT9108NL
Note :
Package Type
CP : TSSOP-28 (Exposed Pad-Option 3)
Lead Plating System
Z : ECO (Ecological Element with
Halogen Free and Pb free)
z LCD-TV
z Monitors
z DVD Players
Pin Configurations
(TOP VIEW)
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
RT9108NL
ZCPYMDNN
RT9108NLZCP : Product Number
YMDNN : Date Code
SD
FAULT
LINP
LINN
GAIN0
GAIN1
AVCC
AGND
GVDD
PLIMIT
RINN
RINP
NC
MUTE
28
2
27
3
26
4
25
5
24
6
23
7 _AGND 22
8
21
9
20
10
19
11
18
12
17
13
16
29
14
15
PVCCL
NC
BSPL
OUTPL
PGND
OUTNL
BSNL
BSNR
OUTNR
PGND
OUTPR
BSPR
NC
PVCCR
TSSOP-28 (Exposed Pad)
Simplified Application Circuit
RT9108NL
PV_CC
PVCCx
BSPL
FB
OUTPL
LINP
PGND
OUTNL
GAIN0
GAIN0
BSNL
FB
Audio
Source
GAIN1
GAIN1
BSNR
OUTNR
FB
PGND
OUTPR
RINP
BSPR
FB
AGND
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9108NL-01 June 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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