Analog Input Monaural Class-D Speaker Amplifier

BD5469GUL is a monaural Class-D speaker amplifier that has integrated ALC function suitable for mobile phones, portable type electronic devices, etc. LC filter at the speaker output is not needed. The IC forms a monaural speaker amplifier using just 3 external components. ALC, short for Automatic Level Control, is a function that automatically adjusts the level of suppression to avoid distortion (clipping) of the output waveform during excessive input. The time until the suppression of the output level is released is called the release time (or recovery time). This IC has a typical release time of 262ms/1dB which suits music play applications. Through Class-D operation, the IC can achieve high efficiency and low power consumption which makes it suitable for battery driven applications. The current consumption in shutdown mode is lowered to 0.01µA (typ.) . Startup time from shutdown mode to active mode is fast and pop noise is minimized which enables it to withstand repeated active and shutdown modes.

Data Sheet Buy * Sample *
* This is a standard-grade product.
For Automotive usage, please contact Sales.

Product Detail

Part Number | BD5469GUL-E2
Status | Recommended
Package | VCSP50L1
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes




Circuit Type

Class D

Number of Ch


Speaker Amp Output Power(Max.)[W]


Gain [dB]


Maximum Output [W,RL=8Ω]


Maximim Output [W,RL=4Ω]


Minimum Load [Ω]


Input Type


Start Up Time [ms]


ALC/Relese time [ms/dB]


Stand-by Current [µA]


Power Supply Voltage (Min.) [V]


Power Supply Voltage (Max.) [V]


Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]


Find Similar


  • Integrated Digital ALC
    (Automatic Level Control) Function.
  • External parts : 3 components.
  • Ultra slim type package : 9 pin WL-CSP
  • Pin Compatible Specs.
    BD5460/61GUL (No ALC Function, Fixed Output Gain)
    BD5465/66/68GUL (ALC Function, Fixed Output Gain)
  • ALC release (recovery) time : 262ms/1dB (Typ).
  • Output Power Limit
    0.88W (Typ) [VDD=4.2V, RL=8Ω, THD+N ≤ 1%]
    0.9W (Typ) [VDD=3.7V, RL=6Ω, THD+N ≤ 1%]
    0.64W (Typ) [VDD=3.6V, RL=8Ω, THD+N ≤ 1%]
  • Audio Analog Input (has option for either single-end
    input or differential input).
  • No need for output LC filter
  • Pop noise suppression circuit
  • Shutdown Mode (used as mute at the same time)
    [low shutdown current = 0.01µA (Typ)]
  • Built-in protection circuits : output short protection,
    high temperature protection, under voltage protection

Reference Design / Application Evaluation Kit

    • Evaluation Board - BD5469GUL-EVK-001
    • BD546xGUL series, BD27400GUL are a wafer-level CSP packaged low voltage monaural Class-D speaker amplifier for mobile phone, portable type electric devices. BD5460/61GUL are a fixed gain type. BD27400GUL is a variable gain type, BD5465/66/67/68/69GUL are fixed gain with ALC type.

  • User Guide

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