LM4871LD/NOPB National Semiconductor, LM4871LD/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM4871LD/NOPB
• Description: IC AMP AUDIO PWR 3W MONO AB 8LLP
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4871LD/NOPB

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 3W x 1 @ 3 Ohm
• Voltage - Supply: 2 V ~ 5.5 V
• Features: Shutdown, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 8-LLP
• Amplifier Class: AB
• No. Of Channels: 1
• Output Power: 2.38W
• Supply Voltage Range: 2V To 5.5V
• Load Impedance: 3ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: LLP
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4871LD; LM4871LDTR

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External Components Description
Typical Performance Characteristics
LD Specific Characteristics
Components
(Figure 1)
1.
2.
3.
4.
5.
C
C
R
R
C
S
B
i
i
f
THD+N vs Output Power
Inverting input resistance that sets the closed-loop gain in conjunction with R
pass filter with C
Input coupling capacitor that blocks the DC voltage at the amplifiers input terminals. Also creates a highpass
filter with R
explanation of how to determine the value of C
Feedback resistance that sets the closed-loop gain in conjunction with R
Supply bypass capacitor that provides power supply filtering. Refer to the Power Supply Bypassing section
for information concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor that provides half-supply filtering. Refer to the section, Proper Selection of External
Components, for information concerning proper placement and selection of C
THD+N vs Frequency
LM4871LD
LM4871LD
i
at f
c
i
= 1/(2π R
at f
C
= 1/(2π R
i
C
i
). Refer to the section, Proper Selection of External Components, for an
10000824
i
C
10000825
i
).
Functional Description
4
i
.
THD+N vs Output Power
THD+N vs Frequency
LM4871LD
LM4871LD
i
.
f
. This resistor also forms a high
B
.
10000826
10000823