LM4862MX National Semiconductor, LM4862MX Datasheet - Page 3

• Manufacturer Part Number: LM4862MX
• Description: IC AMP AUDIO PWR .825W AB 8SOIC
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4862MX

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 825mW x 1 @ 8 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Shutdown, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono
• Output Power (typ): 0.825x1@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.55@8Ohm@500mW%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 50dB
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 8
• Package Type: SOIC N
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LM4862MX

1.
2.
3.
4.
5.
Automatic Switching Circuit
External Components Description
Components
(Figure 1)
R
C
R
C
C
i
i
F
S
B
Inverting input resistance which sets the closed-loop gain in conjunction with R
high pass filter with C
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
highpass filter with R
for an explanation of how to determine the value of C
Feedback resistance which sets the closed-loop gain in conjunction with R
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing
section for proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the Proper Selection of External
Components section for proper placement and selection of the half-supply bypass capacitor.
i
i
at f
at f
FIGURE 2. Automatic Switching Circuit
c
c
= 1/(2πR
= 1/(2πR
i
C
i
C
i
). Refer to the section, Proper Selection of External Components,
I
).
Functional Description
3
i
.
i
.
f
. This resistor also forms a
01234221
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