LM4951A Series

1.8-W, mono, 2.7- to 9-V, analog input Class-AB audio amplifer & short circuit protection

Catalog

1.8-W, mono, 2.7- to 9-V, analog input Class-AB audio amplifer & short circuit protection

Part	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Output Type	Package / Case	Max Output Power x Channels @ Load	Type	Features	Supplied Contents	Utilized IC / Part	Amplifier Type	Board Type
Texas Instruments LM4951TL/NOPB	9-DSBGA (1.6x1.6)	85 °C	-40 °C	Surface Mount	2.7 V	9 V	1-Channel (Mono)	9-WFBGA DSBGA	1 1.8 W	Class AB	Depop Shutdown Thermal Protection
Texas Instruments LM4951ASDX/NOPB	10-WSON (4x4)	85 °C	-40 °C	Surface Mount	2.7 V	9 V	1-Channel (Mono)	10-WDFN Exposed Pad	1 1.8 W	Class AB	Depop Short-Circuit and Thermal Protection Shutdown
Texas Instruments LM4951ASDBD/NOPB					2.7 V	9 V	1-Channel (Mono)		1 1.8 W			Board(s)	LM4951A	Class AB	Fully Populated
Texas Instruments LM4951SDX/NOPB	10-WSON (4x4)	85 °C	-40 °C	Surface Mount	2.7 V	9 V	1-Channel (Mono)	10-WDFN Exposed Pad	1 1.8 W	Class AB	Depop Shutdown Thermal Protection
Texas Instruments LM4951ASDBD					2.7 V	9 V	1-Channel (Mono)		1 1.8 W			Board(s)	LM4951A	Class AB	Fully Populated

Catalog

1.8-W, mono, 2.7- to 9-V, analog input Class-AB audio amplifer & short circuit protection

Key Features

• Pop & Click Circuitry Eliminates Noise During Turn-On and Turn-Off TransitionsWide Supply Voltage Range: 2.7V to 9VLow Current, Active-Low Shutdown ModeLow Quiescent CurrentThermal Shutdown ProtectionShort Circuit ProtectionUnity-Gain StableExternal Gain Configuration CapabilityKey SpecificationsWide Voltage Range 2.7V to 9VQuiescent Power Supply Current (VDD= 7.5V) 2.5mA (typ)Power Output BTL at 7.5V, 1% THD1.8 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 TransitionsWide Supply Voltage Range: 2.7V to 9VLow Current, Active-Low Shutdown ModeLow Quiescent CurrentThermal Shutdown ProtectionShort Circuit ProtectionUnity-Gain StableExternal Gain Configuration CapabilityKey SpecificationsWide Voltage Range 2.7V to 9VQuiescent Power Supply Current (VDD= 7.5V) 2.5mA (typ)Power Output BTL at 7.5V, 1% THD1.8 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.

Description

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.