LR6311 Datasheet, PDF (2/13 Pages) Leshan Radio Company – 3 Watt Mono Filter-Free Class-D Audio Power Amplifier

Pin Diagrams
Leshan Radio Co ., Ltd
1
2
3
A
IN+
GND
VO-
B VDD
PVDD
PGND
C
IN-
SDB
VO+
Pin Description
Pin #
A1
A2
A3
B1
B2
B3
C1
C2
C3
Name
IN+
GND
VO-
VDD
PVDD
PGND
IN-
SDB
VO+
Function Block Diagram
Av1 = 150k/Ri
150k
top view
Description
Positive differential input
Power Ground
Negative BTL output
Power Supply
Power Supply
Power Ground
Negative differential input
Shutdown terminal (low active)
Positive BTL output
(C1)
IN-
Amp1
(A1)
IN+
PWM Modulator and
Power Driver
Av2 = 2 V/V
(C2)
SDB
150k
ShutDown
Control
300k
Bias &
Reference
OSC &
RAMP
Start up &
Protection
OC
Detect
Notes: Total Voltage Gain = Av1× Av2 = 2 × ^150k
Figure 1. Function Block Diagram
R_I
(B1)
VDD
(B2)
PVDD
(A3)
Vo-
(C3)
Vo+
(B3)
PGND
(A2)
GND
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