Document Title Document ID/Size Revision Score 1.35 Watt Audio Power Amplifier with Selectable Fast Turn On Time - ON Semiconductor - #1

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© Semiconductor Components Industries, LLC, 2009 November, 2009 - Rev. 2 1 Publication Order Number: NCP2991/D NCP2991 1.35 Watt Audio Power Amplifier with Selectable Fast Turn On Time The NCP2991 is an audio power amplifier designed for portable communication device applications such as mobile phone applications. The NCP2991 is capable of delivering 1.35 W of continuous average power to an 8.0 BTL load from a 5.0 V power supply, and 1.1 W to a 4.0  BTL load from a 3.6 V power supply. The NCP2991 provides high quality audio while requiring few external components and minimal power consumption. It features a low-power consumption shutdown mode, which is achieved by driving the SHUTDOWN pin with logic low. The NCP2991 contains circuitry to prevent from “pop and click” noise that would otherwise occur during turn-on and turn-off transitions. It is a zero pop noise device when a single ended or a differential audio input is used. For maximum flexibility, the NCP2991 provides an externally controlled gain (with resistors). In addition, it integrates 2 different Turn On times (15 ms or 30 ms) adjustable with the TON pin. Due to its superior PSRR, it can be directly connected to the battery, saving the use of an LDO. This device is available in a 9-Pin Flip-Chip CSP (Lead-Free). Features • 1.35 W to an 8.0  BTL Load from a 5.0 V Power Supply • Best-in-Class PSRR: up to -100 dB, Direct Connection to the Battery • Zero Pop Noise Signature with a Single Ended Audio Input • Ultra Low Current Shutdown Mode: 10 nA • 2.5 V-5.5 V Operation • External Gain Configuration Capability • External Turn-on Time Configuration Capability: 15 ms or 30 ms • Thermal Overload Protection Circuitry • This is a Pb-Free Device* Typical Applications • Portable Electronic Devices • PDAs • Wireless Phones *For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. 9-Pin Flip-Chip CSP FC SUFFIX CASE 499E PIN CONNECTIONS MRH = Specific Device Code A = Assembly Location Y = Year WW = Work Week  = Pb-Free Package MARKING DIAGRAMS A3 B3 C3 A2 B2 C2 A1 B1 C1 INM OUTA INP VM TON VP BYPASS OUTB SHUTDOWN (Top View) See detailed ordering and shipping information in the package dimensions section on page 14 of this data sheet. ORDERING INFORMATION MRH AYWW http://onsemi.com A1