NCP4894 Series

Audio Power Amplifier, 1.8 Watt, with Selectable Shutdown

Catalog

Audio Power Amplifier, 1.8 Watt, with Selectable Shutdown

Part	Package / Case	Features	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Max]	Voltage - Supply [Min]	Type	Max Output Power x Channels @ Load	Output Type	Mounting Type	Supplier Device Package [x]	Supplier Device Package	Supplier Device Package [y]
ON Semiconductor NCP4894FCT1G	9-WFBGA FCBGA	Depop Differential Inputs Short-Circuit and Thermal Protection Shutdown	85 °C	-40 °C	5.5 V	2.2 V	Class AB	1 1.8 W	1-Channel (Mono)	Surface Mount	1.45	9-FlipChip	1.45
ON Semiconductor NCP4894MNR2	10-VFDFN Exposed Pad	Depop Differential Inputs Short-Circuit and Thermal Protection Shutdown	85 °C	-40 °C	5.5 V	2.2 V	Class AB	1 1.8 W	1-Channel (Mono)	Surface Mount		10-DFN (3x3)

Catalog

Audio Power Amplifier, 1.8 Watt, with Selectable Shutdown

Key Features

• Differential Amplification

• Shutdown High or Low Selectivity

• 1.0 W to an 8.0 load from a 5.0 V Power Supply

• Superior PSRR: Direct Connection to the Battery

• Pop and Click Noise Protection Circuitry

• Ultra Low Current Shutdown Mode

• 2.2 - 5.5 V Operation

• External Gain Configuration Capability

• Thermal Overload Protection Circuitry

• External Turn-on Time Configuration Capability

Description

The NCP4894 is a differential audio power amplifier designed for portable communication device applications. The excellent audio characteristics of the NCP4894 are a guarantee of high quality sound, for example, in mobile phone applications. With less than 0.01% distortion (THD+N), the NCP4894 is capable of delivering 1.0W of continuous average power to an 8.0Ω load from a 5.0V power and still 250mW from 2.6V.The NCP4894 provides high quality audio while requiring few external components and minimal power consumption. It features a low-power consumption shutdown mode.To be flexible, shutdown may be enabled by either a logic high or low depending on the voltage applied on the SD MODE pin.The NCP4894 contains circuitry to prevent from "pop and click" noise that would otherwise occur during turn-on and turn-off transitions.For maximum flexibility, the NCP4894 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with bypass capacitor).Due to its excellent PSRR, it can be directly connected to the battery, saving the use of an LDO.This device is available in the 9-Pin Flip-Chip CSP, Micro10 and DFN 3x3 mm package.