BD5469GUL Datasheet, PDF (1/26 Pages) Rohm – Analog Input Monaural Class-D Speaker Amplifier

Datasheet
Small-sized Class-D Speaker Amplifiers
Analog Input
Monaural Class-D Speaker Amplifier
BD5469GUL
General Description
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.
Key Specifications
 Supply Voltage Range:
2.5V to 5.5V
 THD+N:
0.2%(0.3W, RL=8Ω, Typ)
 Switching Frequency:
250kHz(Typ)
 Shutdown Current:
0.01μA (Typ)
 Operating Temperature Range:
-40°C to +85°C
Package
VCSP50L1
W(Typ) x D(Typ) x H(Max)
1.70mm x 1.70mm x 0.55mm
Features
 Integrated Digital ALC (Automatic Level Control)
Function.
 External parts : 3 components.
 Ultra slim type package: 9 pin
WL-CSP(1.7×1.7×0.55mmMax).
 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
VCSP50L1
Typical Application Circuit
VDD
VDD
Diff. Input
SDNB ^VDD
OUT+
IN+
IN-
OUT-
GND
Applications
Mobile Phones, Portable Audio Devices, PND, DSC,
Note-PC etc.
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
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TSZ02201-0C1C0E700150-1-2
2014.04.04 Rev.001