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www.rohm.com

2010.06 - Rev.A

© 2010 ROHM Co., Ltd. All rights reserved.

Small-sized Class-D Speaker Amplifiers

Analog Input

Monaural Class-D Speaker Amplifiers

BD5632NUX,BD5634NUX,BD5638NUX

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Description

BD5632NUX, BD5634NUX and BD5638NUX are a low voltage drive class-D speaker amplifier that was developed for

mobile phones, mobile audio products and the others. BD5632NUX has a fixed gain of 6dB, BD5634NUX has a fixed gain

of 12dB, and BD5638NUX has a fixed gain of 18dB. It is suitable for the application of battery drive because of high

efficiency and low power consumption. Also, stand-by current is 0µA (typ.), and fast transitions from standby to active with

little pop noise. It is suitable for applications that switch repeatedly between stand-by and active.

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Features

1) LC Filter less

2) Only 3 external components

3) High power 2.5W/4ohm/BTL

(VDD=5V, RL=4ohm, THD+N=10%, typ.)

4) High power 0.85W/8ohm/BTL (VDD=3.6V, RL=8ohm, THD+N=10%, typ.)

5) Analog differential input / PWM digital output

6) Pop noise suppression circuit

7) Standby function (Mute function)

8) Protection circuit

(Short protection [Auto recover without power cycling], Thermal shutdown, under voltage lockout)

9) Ultra small package VSON008X2030 (2.0×3.0×0.6mmMAX)

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Applications

Mobile phones, PND (Personal Navigation Device), DSC, PDA, etc

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Line up matrix

Production Name

BD5632NUX

BD5634NUX

BD5638NUX

Gain (dB)

6

12

18

Input Impedance (kΩ)

100

50

25

Package

VSON008X2030

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Absolute maximum ratings (Ta=25℃)

Parameter

Symbol

Ratings

Unit

Power Supply Voltage

VDD

7.0

V

Power Dissipation

Pd

0.52 *1

W

Storage Temperature Range

Tstg

-55 ~ +150

℃

STBY Terminal Input Range

Vstby

-0.3 ~ VDD+0.3

V

IN+, IN- Terminal Input Range

Vin

-0.3 ~ VDD+0.3

V

(*1) ROHM standard board mounted (Board size 70mm×70mm×1.6mmt, 1layer), de-rate the value 4.16mW/deg above Ta=+25deg.

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Operating conditions

Parameter

Symbol

Ratings

Unit

Power Supply Voltage

VDD

+2.5 ~ +5.5

V

Temperature Range

Topr

-40 ~ +85

℃

*This product is not designed for protection against radioactive rays.

No.10101EAT04