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Product Detailed Parameters
- Description：IC AMP AB MONO 1.08W 9FLIPCHIP
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Bulk
- Type：Class AB
- Output Type：1-Channel (Mono) with Mono Headphones
- Max Output Power x Channels @ Load：1.08W x 1 @ 8Ohm; 176mW x 1 @ 16Ohm
- Voltage - Supply：2.2V ~ 5.5V
- Features：Depop, Shutdown, Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：9-FlipChip (1.45x1.45)
- Package / Case：9-WFBGA, FCBGA
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The NCP4896FCT1G is a Class-AB audio power amplifier designed for portable communication devices. It delivers 1.0 W to an 8 Ω BTL load from a 5.0 V supply and 250 mW to a 4 Ω BTL load from 2.6 V. In single-ended mode, it provides 90 mW to a 32 Ω load at 5.0 V. The device operates on a 2.2 V to 5.5 V supply with a typical quiescent current of 1.7 mA. It features ultra-low shutdown current (2.0 nA), thermal overload protection, and pop-and-click noise suppression.
Feature Summary
- Supports both bridge-tied load (BTL) and single-ended (SE) configurations via external control pins.
- Includes circuitry to prevent audible 'pop and click' noises during power transitions.
- Features high power supply rejection ratio allowing direct battery connection without LDO regulators.
- Provides externally configurable gain and turn-on time through external resistors and capacitors.
Applications
- Mobile phones
- Personal Digital Assistants (PDAs)
- Portable electronic devices
Procurement Notes
Verify the component status as the source documentation indicates potential discontinuation or end-of-life status. Confirm the specific ordering suffix FCT1G corresponds to the 9-pin flip-chip CSP package and tape and reel shipping format. Ensure compatibility with lead-free manufacturing processes if required by the assembly line specifications.
Selection Notes
Select this amplifier for applications requiring flexible output driving capabilities between BTL speakers and SE earpieces. Consider the external gain setting requirements and bypass capacitor selection to optimize turn-on characteristics. Evaluate PCB heatsink area requirements to manage thermal dissipation effectively within the operating temperature range.
Part Context
The NCP4896 belongs to the NCP4896 series of audio amplifiers manufactured by onsemi. It is housed in a 9-pin flip-chip CSP package (Case 499AL). The device is part of onsemi's portfolio of low-power audio solutions designed for mobile and portable consumer electronics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation.
FAQ
How does the NCP4896 handle 'pop and click' noise?
The device includes internal circuitry that slowly establishes gain and cuts the output signal during turn-on and turn-off transitions to eliminate audible popping and clicking noises.
What is the function of the BYP pin?
The BYP pin connects to a bypass capacitor that provides the common mode voltage (VP/2) and determines the turn-on time of the amplifier.
Can the NCP4896 drive both BTL and SE loads simultaneously?
Yes, the device allows switching between BTL and SE modes via the SE/BTL pin, enabling cost savings for applications requiring both speaker and earpiece drivers.
