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LM4871MX Computer IC Chip Amplifier IC 1-Channel (Mono) Class AB 8-SOIC
3W Audio Power Amplifier with Shutdown Mode 1
FEATURES DESCRIPTION The LM4871 is a mono bridged audio power
amplifier 2• No Output Coupling Capacitors, Bootstrap capable of
delivering 3W of continuous averageCapacitors, or Snubber Circuits
Required power into a 3Ω load with less than 10% THD when •
Unity-gain Stable powered by a 5V power supply (see Note). To •
WSON, VSSOP, SOIC, or PDIP Packaging conserve power in portable
applications, the LM4871's micropower shutdown mode (IQ = 0.6µA,•
External Gain Configuration Capability typ) is activated when VDD
is applied to the • Pin Compatible with the LM4861 SHUTDOWN pin.
Boomer audio power amplifiers are designedAPPLICATIONS specifically
to provide high power, high fidelity audio • Portable Computers
output. They require few external components and • Desktop
Computers operate on low supply voltages from 2.0V to 5.5V. Since
the LM4871 does not require output coupling• Low Voltage Audio
Systems capacitors, bootstrap capacitors, or snubber networks, it
is ideally suited for low-power portableKEY SPECIFICATIONS systems
that require minimum volume and weight. • PO at 10% THD+N, 1kHz
Additional LM4871 features include thermal shutdown – LM4871LD: 3Ω
, 4Ω Loads; 3W (typ), protection, unity-gain stability, and
external gain set. 2.5 W (typ) Note: An LM4871LD that has been
properly mounted – All other LM4871 Packages: 8Ω load to a circuit
board will deliver 3W into 3Ω (at 10% 1.5 W (typ) THD). The other
package options for the LM4871 will • Shutdown Current 0.6µA (typ)
deliver 1.5W into 8Ω (at 10% THD). See the Application Information
section for further information• Supply Voltage Range 2.0V to 5.5 V
concerning the LM4871LD, LM4871MM, LM4871M, • THD at 1kHz at 1W
Continuous Average and the LM4871N. Output Power into 8Ω 0.5% (max)
| Product Attributes | Select All |
| Categories | Integrated Circuits (ICs) |
| Linear - Amplifiers - Audio | |
| Manufacturer | Texas Instruments |
| Series | Boomer® |
| Packaging | Tape & Reel (TR) |
| Part Status | Active |
| Type | Class AB |
| 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 |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Supplier Device Package | 8-SOIC |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
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