Product details

Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 9 Power stage supply (min) (V) 2.7 Load (min) (Ω) 8 Output power (W) 2.2 THD + N at 1 kHz (%) 0.07 Iq (typ) (mA) 2.5 Control interface Hardware Closed/open loop Open Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 9 PSRR (dB) 66 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-AB Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 9 Power stage supply (min) (V) 2.7 Load (min) (Ω) 8 Output power (W) 2.2 THD + N at 1 kHz (%) 0.07 Iq (typ) (mA) 2.5 Control interface Hardware Closed/open loop Open Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 9 PSRR (dB) 66 Operating temperature range (°C) -40 to 85
WSON (DPR) 10 16 mm² 4 x 4
  • Pop & Click Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
  • Wide Supply Voltage Range: 2.7V to 9V
  • Low Current, Active-Low Shutdown Mode
  • Low Quiescent Current
  • Thermal Shutdown Protection
  • Short Circuit Protection
  • Unity-Gain Stable
  • External Gain Configuration Capability

Key Specifications

  • Wide Voltage Range 2.7V to 9V
  • Quiescent Power Supply Current (VDD = 7.5V) 2.5mA (typ)
  • Power Output BTL at 7.5V, 1% THD
    1.8 W (typ)
  • Shutdown Current 0.01µA (typ)
  • Fast Turn on Time 25ms (typ)

All trademarks are the property of their respective owners. Boomer is a trademark of Texas Instruments.

  • Pop & Click Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions
  • Wide Supply Voltage Range: 2.7V to 9V
  • Low Current, Active-Low Shutdown Mode
  • Low Quiescent Current
  • Thermal Shutdown Protection
  • Short Circuit Protection
  • Unity-Gain Stable
  • External Gain Configuration Capability

Key Specifications

  • Wide Voltage Range 2.7V to 9V
  • Quiescent Power Supply Current (VDD = 7.5V) 2.5mA (typ)
  • Power Output BTL at 7.5V, 1% THD
    1.8 W (typ)
  • Shutdown Current 0.01µA (typ)
  • Fast Turn on Time 25ms (typ)

All trademarks are the property of their respective owners. Boomer is a trademark of Texas Instruments.

The LM4951A is an audio power amplifier designed for applications with supply voltages ranging from 2.7V up to 9V. The LM4951A is capable of delivering 1.8W continuous average power with less than 1% THD+N into a bridge connected 8Ω load when operating from a 7.5VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4951A does not require bootstrap capacitors, or snubber circuits.

The LM4951A features a low-power consumption active-low shutdown mode. Additionally, the LM4951A features an internal thermal shutdown protection mechanism and short circuit protection.

The LM4951A contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4951A is unity-gain stable and can be configured by external gain-setting resistors.

The LM4951A is an audio power amplifier designed for applications with supply voltages ranging from 2.7V up to 9V. The LM4951A is capable of delivering 1.8W continuous average power with less than 1% THD+N into a bridge connected 8Ω load when operating from a 7.5VDC power supply.

Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4951A does not require bootstrap capacitors, or snubber circuits.

The LM4951A features a low-power consumption active-low shutdown mode. Additionally, the LM4951A features an internal thermal shutdown protection mechanism and short circuit protection.

The LM4951A contains advanced pop & click circuitry that eliminates noises which would otherwise occur during turn-on and turn-off transitions.

The LM4951A is unity-gain stable and can be configured by external gain-setting resistors.

Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet Wide Voltage Range 1.8 Watt Audio Amplifier With Short Circuit Protection datasheet (Rev. C) 08 Apr 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins CAD symbols, footprints & 3D models
WSON (DPR) 10 Ultra Librarian

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos