IC AMP AUDIO PWR MONO AB 16USMD

LM48557TL/NOPB

Manufacturer Part NumberLM48557TL/NOPB
DescriptionIC AMP AUDIO PWR MONO AB 16USMD
ManufacturerNational Semiconductor
SeriesBoomer®
TypeClass AB
LM48557TL/NOPB datasheet
 

Specifications of LM48557TL/NOPB

Output Type1-Channel (Mono)Voltage - Supply2.7 V ~ 4.5 V
FeaturesDepop, Differential Inputs, I²C, Mute, Shutdown, Volume ControlMounting TypeSurface Mount
Package / Case16-MicroSMDOperational ClassClass-AB
Audio Amplifier Output Configuration1-Channel MonoAudio Amplifier FunctionSpeaker
Single Supply Voltage (typ)Not RequiredVDual Supply Voltage (typ)3V
Power Supply RequirementDualRail/rail I/o TypeNo
Power Supply Rejection Ratio80dBSingle Supply Voltage (min)Not RequiredV
Single Supply Voltage (max)Not RequiredVDual Supply Voltage (min)1.7/2.7V
Dual Supply Voltage (max)4.5VOperating Temp Range-40C to 85C
Operating Temperature ClassificationIndustrialMountingSurface Mount
Pin Count16Package TypeuSMD
Lead Free Status / RoHS StatusLead free / RoHS CompliantMax Output Power X Channels @ Load-
Other namesLM48557TLTR  
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PCB Layout Guidelines
Minimize trace impedance of the power, ground and all output
traces for optimum performance. Voltage loss due to trace
resistance between the LM48557 and the load results in de-
creased output power and efficiency. Trace resistance be-
tween the power supply and ground has the same effect as a
poorly regulated supply, increased ripple and reduced peak
output power. Use wide traces for power supply inputs and
amplifier outputs to minimize losses due to trace resistance,
as well as route heat away from the device. Proper grounding
LM48557TL Demoboard Bill of Materials
Designator
Quantity
U1
1
C1, C2, C5, C6, C7
5
C3, C4
2
C8
1
J2
1
JU1, JU2, JU3, JU4,
VCM, VDD, GND,
12
I
2
CV
, IN+, IN-,
DD
OUT+, OUT-
JU5
1
R1, R2
2
R3
1
JU1_SH, JU2_SH,
4
JU3_SH, JU5_SH
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improves audio performance, minimizes crosstalk between
channels and prevents switching noise from interfering with
the audio signal. Use of power and ground planes is recom-
mended.
Place all digital components and route digital signal traces as
far as possible from analog components and traces. Do not
run digital and analog traces in parallel on the same PCB lay-
er. If digital and analog signal lines must cross either over or
under each other, ensure that they cross in a perpendicular
fashion.
LM48557TL Differential, Mono, Ceramic Speaker Driver with I
CAP CERAMIC 2.2µF 10V X5R 10% 0603
CAP .1µF 16V CERAMIC X7R 10% 1206
CAP TANT LOESR 10µF 16V 10% SMD
CONN SOCKET PCB VERT 16POS .1"
CONN HEADER VERT .100 2POS 30Au
CONN HEADER VERT .100 3POS 30Au
RES 5.1K OHM 1/10W 5% 0603 SMD
RES 20K OHM 1/10W 5% 0603 SMD
Jumper Shunt w/handle, 30uin gold plated, 0.100" pitch
18
Description
2
C Volume Control, and Reset