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NCP2821 Dataheets PDF



Part Number NCP2821
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description 2.65W Filterless
Datasheet NCP2821 DatasheetNCP2821 Datasheet (PDF)

www.DataSheet4U.com NCP2821 2.65 W Filterless with Selectable Gain Class−D Audio Amplifier NCP2821 is a cost effective mono audio power amplifier designed for portable communication device applications such as mobile phones. The internal gain setting between 6 dB and 12 dB will also save external gain setting resistors. To achieve a typical audio mono application, you only need an external capacitor for filtering the power supply. The NCP2821 processes analog inputs with a PWM technique that lo.

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www.DataSheet4U.com NCP2821 2.65 W Filterless with Selectable Gain Class−D Audio Amplifier NCP2821 is a cost effective mono audio power amplifier designed for portable communication device applications such as mobile phones. The internal gain setting between 6 dB and 12 dB will also save external gain setting resistors. To achieve a typical audio mono application, you only need an external capacitor for filtering the power supply. The NCP2821 processes analog inputs with a PWM technique that lowers significantly output noise and THD. This part is capable of delivering 2.65 W of continuous average power to a 4.0 W BTL load from a 5.0 V power supply. Operating on a single 3 V supply, the output power stage can provide 500 mW to an 8.0 W BTL load with less than 1% THD+N. For cellular handsets or PDAs it offers space and cost savings because no output filter is required when using inductive transducers. Its improved Class−D technology makes it suitable for portable devices. With 90% efficiency and very low shutdown current, it increases widely the lifetime of your battery compared to a ClassAB solution. It also minimizes the junction temperature. It fully rejects “pop & click” noises with a fast start−up time of 9 ms. Added to a −65 dB PSRR, the NCP2821 audio power amplifier is specifically designed to provide high quality output power from low supply voltage, requiring only 1 external capacitor. Features http://onsemi.com MARKING DIAGRAM 9−PIN FLIP−CHIP CSP FC SUFFIX CASE 499AL MAU A Y WW G MAUG AYWW 1 A1 = Device Code = Assembly Location = Year = Work Week = Pb−Free Package PIN CONNECTIONS 9−Pin Flip−Chip CSP A1 INP B1 A2 GS B2 VP C2 A3 OUTM B3 GND C3 • Optimized PWM Output Stage: Filterless Capability • Selectable Gain of 6 dB or 12 dB: No Need for External Gain Setting • Efficiency up to 90% and Low Quiescent Current • • • • • • • • • • • • Maximum Battery Life and Minimum Heat High Output Power Capability: 1.4 W with 8.0 W Load Wide Supply Voltage Range: 2.5−5.5 V Operating Voltage High Performance, THD+N of 0.05% Excellent PSRR (−65 dB): No Need for Voltage Regulation Surface Mounted Package 9−Pin Flip−Chip CSP Fully Differential Capability: No Need for Input Coupling Capacitor Very Fast Turn On Time: 9.0 ms (typ) “Pop and Click” Noise Protection Circuitry Resistors VP C1 INM SD OUTP (Top View) ORDERING INFORMATION See detailed ordering and shipping information on page 18 of this data sheet. 1 mF Audio Input from DAC Input from Micro controller VP INP INM GS SD OUTM OUTP Applications Cellular Phone Personal Computer PDAs Portable Electronic Devices GND Cs 1.6 mm 2.7 mm Solution Size © Semiconductor Components Industries, LLC, 2006 1 February, 2006 − Rev. 0 Publication Order Number: NCP2821/D www.DataSheet4U.com NCP2821 BATTERY Cs Negative Differential Input Vp INM Ri Rf OUTP RAMP GENERATOR Vih Vil GS Gain Control Data Processor CMOS Output Stage OUTM Rf INP Ri 300 kW SD Vih Vil Positive Differential Input Shutdown Control GND Figure 1. Typical Application PIN DESCRIPTION Pin No. A1 A2 A3 B1 B2 B3 C1 C2 C3 Symbol INP GS OUTM Vp Vp GND INM SD OUTP Type I I O I I I I I O Positive Differential Input. Gain Select Input. Negative BTL Output. Power Analog Positive Supply. Range: 2.5 V – 5.5 V. Power Analog Positive Supply. Range: 2.5 V – 5.5 V. Analog Ground. Negative Differential Input. Shutdown Input. Positive BTL Output. Description http://onsemi.com 2 RL = 8 W GS www.DataSheet4U.com NCP2821 MAXIMUM RATINGS Rating Supply Voltage Operating Supply Voltage Input Voltage Power Dissipation (Note 1) Operating Ambient Temperature Max Junction Temperature Storage Temperature Range Thermal Resistance Junction−to−Air ESD Protection Human Body Model (HBM) (Note 3) Machine Model (MM) (Note 4) Latchup Current @ TA = 85°C (Note 5) Symbol Vp Op Vp Vin Pd TA TJ Tstg RqJA − − − Max 6.0 2.5 to 5.5 −0.3 to Vp +0.3 Internally Limited −40 to +85 150 −65 to +150 90 (Note 2) > 2000 > 200 $100 Unit V V V − °C °C °C °C/W V mA Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. The thermal shutdown is set to 160°C (typical) avoiding irreversible damage to the device due to power dissipation. 2. For the 9−Pin Flip−Chip CSP package, the RqJA is highly dependent of the PCB Heatsink area. For example, RqJA can equal 195°C/W with 50 mm2 total area and also 135°C/W with 500 mm2. When using ground and power planes, the value is around 90°C/W, as specified in table. 3. Human Body Model: 100 pF discharged through a 1.5 kW resistor following specification JESD22/A114. 4. Machine Model: 200 pF discharged through all pins following specification JESD22/A115. 5. Latchup Testing per JEDEC Standard JESD78. SD and GS are quali.


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