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Product Detailed Parameters
- Description：IC AMP CLASS D MONO 2.78W 10QFN
- Series：-
- Mfr：Monolithic Power Systems Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Class D
- Output Type：1-Channel (Mono)
- Max Output Power x Channels @ Load：2.78W x 1 @ 4Ohm
- Voltage - Supply：2.5V ~ 5.5V
- Features：Depop, Short-Circuit and Thermal Protection
- Mounting Type：Surface Mount
- Supplier Device Package：10-QFN (3x3)
- Package / Case：10-VFDFN Exposed Pad
- Operating Temperature：-40°C ~ 85°C (TA)
- Grade：-
- Qualification：-
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Overview
The MP1720DQ-3-LF-Z is a mono Class-D audio amplifier manufactured by Monolithic Power Systems. It utilizes a bridge-tied load (BTL) output structure to deliver 2.7W of power into a 4Ω load at 5V input with 10% THD+N. The device operates from a supply voltage range of 2.5V to 5.5V and achieves up to 90% efficiency. Key electrical parameters include a typical noise level of 53μV at 3.3V VIN, a quiescent current of 4mA at 3.3V, and a shutdown current of 0.1μA. The switching frequency is pin-selectable between 1MHz and 1.3MHz or can be synchronized to an external clock.
Feature Summary
- Features an internal EMI reduction scheme that allows compliance with FCC radiated emission standards without requiring an output LC filter.
- Includes a 15ms start-up time designed to eliminate audible pop noises during power cycles.
- Provides fully differential input capability for improved signal integrity in noisy environments.
- Integrates comprehensive protection mechanisms including short-circuit protection and thermal shutdown.
Applications
- Mobile phones
- Tablets
- MP3 players
- Portable audio devices
Procurement Notes
Verify the specific suffix '3' indicates the fixed gain option of 3dB, as other variants exist within the MP1720 family. Confirm the package type corresponds to the QFN-10 specification. Ensure compatibility with the intended operating voltage and load impedance requirements before integration.
Selection Notes
Select this component when high efficiency and low electromagnetic interference are critical constraints. The absence of output filters reduces bill of materials cost and board space. Verify that the 3dB gain setting aligns with the source signal amplitude requirements for the target application.
Part Context
This part belongs to the MP1720 series of high-efficiency Class-D audio amplifiers. The DQ suffix denotes the QFN-10 package variant. The LF-Z suffix typically indicates lead-free composition and tape-and-reel packaging, consistent with MPS standard ordering nomenclature for surface-mount devices.
Replacement Considerations
Other MP1720 variants such as MP1720DQ-6-LF-Z or MP1720DQ-9-LF-Z share identical pinouts and functionality but differ in fixed gain settings. Direct substitution requires verifying that the alternative gain value meets the system's audio signal chain requirements.
