Middle Power Class-D Speaker Amplifiers
Analog Input / BTL Output
Class-D Speaker Amplifier
BD5423AEFS
No.10075EBT02
●Description
BD5423AEFS is a 17W + 17W stereo class-D power amplifier IC, developed for space-saving and low heat-generation
applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process
technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an
ultimate level. With this technology, the IC has achieved high efficiency of 90% (10W + 10W output with 8Ω load), which is
the top class in the industry. The IC, in addition, employs a compact back-surface heat radiation type power package to
achieve low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a
total output of 34W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-
quality playback of the sound system.
●Features
1) A high efficiency of 90% (10W + 10W output with 8Ω load),
which is the highest grade in the industry and low heat-generation.
2) An output of 17W + 17W (12V, with 4Ω load) is allowed without an external heat radiator.
3) Driving a lowest rating load of 4Ω is allowed.
4) Pop noise upon turning power on/off and power interruption has been reduced.
5) High-quality audio muting is implemented by soft-switching technology.
6) An output power limiter function limits excessive output to speakers.
7) High-reliability design provided with built-in protection circuits against high temperatures,
against VCC shorting and GND shorting, against reduced-voltage, and against applying DC voltage to speaker.
8) A master/slave function allowing synchronization of multiple devices reduces beat noises.
9) Adjustment of internal PWM sampling clock frequencies (250kHz to 400kHz)
allows easy protective measures against unwanted radio emission to AM radio band.
10) A compact back-surface heat radiation type power package is employed.
HTSSOP-A44 (5mm × 7.5mm × 1.0mm, pitch 0.8mm )
●Absolute Maximum Ratings
A circuit must be designed and evaluated not to exceed absolute maximum rating in any cases and even momentarily, to
prevent reduction in functional performances and thermal destruction of a semiconductor product and secure useful life and
reliability.
The following values assume Ta =25℃. For latest values, refer to delivery specifications.
Parameter
Supply voltage
Symbol
VCC
Ratings
+20
Unit
V
Conditions
Pin 7, 8, 15, 16, 29, 30, 37, 38, 40
(Note 1, 2)
2.0
4.5
W
W
(Note 3)
(Note 4)
Power dissipation
Pd
Input voltage for signal pin
Input voltage for control pin
Input voltage for clock pin
Operating temperature range
Storage temperature range
Maximum junction temperature
VIN
VCONT
VOSC
Topr
-0.2 ～ +7.2
-0.2 ～ Vcc+0.2
-0.2 ～ +7.2
-40 ～ +85
-55 ～ +150
+150
V
V
Pin 1, 44 (Note 1)
Pin 20, 24 (Note 1)
Pin 23 (Note 1)
V
℃
℃
℃
Tstg
Tjmax
(Note 1) A voltage that can be applied with reference to GND (pins 11, 12, 33, 34, and 43)
(Note 2) Pd and Tjmax=150℃ must not be exceeded.
(Note 3) 70mm × 70mm × 1.6mm FR4 One-sided glass epoxy board (Back copper foil 0%) installed.
If used under Ta=25℃ or higher, reduce 16mW for increase of every 1℃. The board is provided with thermal via.
(Note 4) 70mm × 70mm × 1.6mm FR4 Both-sided glass epoxy board (Back copper foil 100%) installed.
If used under Ta=25℃ or higher, reduce 36mW for increase of every 1℃. The board is provided with thermal via.
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
2010.05 - Rev.B
1/17
5秒后页面跳转
NTC热敏电阻与PTC热敏电阻的应用原理及应用范围
GTO与普通晶闸管相比为什么可以自关断？为什么普通晶闸管不能呢？从GTO原理、应用范围带你了解原因及推荐型号
LF353数据手册解读：特性、应用、封装、引脚说明、电气参数及替换型号推荐
A4950资料手册解读：特性、应用、封装、引脚功能、电气参数及代换型号
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
