LM48511SQ National Semiconductor, LM48511SQ Datasheet - Page 4

• Manufacturer Part Number: LM48511SQ
• Manufacturer: National Semiconductor

Specifications of LM48511SQ

• Operational Class: Class-D
• Audio Amplifier Output Configuration: 1-Channel Mono
• Output Power (typ): 6.7x1@4OhmW
• Audio Amplifier Function: Speaker
• Single Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (typ): 5V
• Power Supply Requirement: Triple
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 88dB
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): 3/4.8V
• Dual Supply Voltage (max): 5.5/8V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 24
• Lead Free Status / Rohs Status: Not Compliant

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Pin Descriptions
LLP-24 Pin
22,23
9, 11
DAP
2,3
10
12
13
14
15
16
17
18
19
20
21
24
1
4
5
6
7
8
SOFTSTART
SD_BOOST
FB_GND1
FB_GND0
REGGND
SD_AMP
FB_SEL
LSGND
SS/FF
Name
VG0+
VG0–
GND
VDD
LS+
PV1
SW
LS-
IN+
IN-
FB
V1
Regulator Feedback Select. Connect to VDD to select feedback
network connected to FB_GND1. Connect to GND to select
feedback network connected to FB_GND0.
Drain of the Internal FET Switch
Soft Start Capacitor
Amplifier Active Low Shutdown. Connect to V
operation. Connect to GND to disable amplifier.
Modulation Mode Select. Connect to V
mode (SS). Connect to GND for fixed frequency mode (FF).
Signal Ground
Amplifier Non-Inverting Output
Amplifier H-Bridge Ground
Amplifier H-Bridge Power Supply. Connect to V1.
Amplifier Inverting Output
Amplifier Supply Voltage. Connect to PV1
Amplifier Non-Inverting Gain Output
Amplifier Inverting Input
Amplifier Non-Inverting Input
Amplifier Inverting Gain Output
Power Supply
Regulator Feedback Input. Connect FB to an external resistive
voltage divider to set the boost output voltage.
Ground return for R
Ground return for R
Power Ground (Booster)
Regulator Active Low Shutdown. Connect to V
operation. Connect to GND to disable regulator.
To be soldered to board for enhanced thermal dissipation. Connect
to GND plane.
4
3
3
, R
, R
1
2
resistor divider
resistor divider
Function
DD
for spread spectrum
DD
DD
for normal
for normal