BD5461GUL Просмотр технического описания (PDF) - ROHM Semiconductor

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BD5461GUL

Analog Input Monaural Class-D Speaker Amplifier

ROHM Semiconductor 

BD5461GUL

Technical Note

●Electric Characteristics

(Unless otherwise specified, Ta=25℃, VDD=3.6V, f=1kHz, RL=8Ω, AC item=LC Filter ; L=22µH, C=1µF )

Parameter

Rating

Symbol

Unit

MIN. TYP. MAX.

Conditions

Circuit current (No signal)

Circuit current (Standby)

Output power 1

Output power 2

Voltage gain

Power Supply Rejection Ratio

Output offset voltage

ICC

ISTBY

PO1

PO2

GV

PSRR

ΔVo

―

2.0

4.0

mA Active mode, No load

―

0.1

2

μA Standby mode

450 680

―

mW BTL, f=1kHz, THD+N=1% *1

550 850

―

mW BTL, f=1kHz, THD+N=10% *1

11.4 11.9 12.4 dB BTL

45

53

―

dB BTL, f=1kHz, Vripple=0.1Vpp *2

-25

0

+25 mV Vin=0V, BTL

Switching Frequency

fosc

175 250 325 kHz

Start-up time

Ton

0.39 0.51 0.73 msec

High-level

Standby input Voltage

VSTBYH

1.4

Low-level VSTBYL

0

― VDD

―

0.4

Standby input current

High-level

ISTBYH

6

12

18

Low-level

ISTBYL

-5

0

5

BTL=Bridged Tied Load (Voltage between A3-C3.), *1;B.W.=400～30kHz,*2;DIN AUDIO

V Active mode

V Standby mode

μA VSTBY=3.6V

μA VSTBY=0V

●Measurement Circuit Diagram

Vripple

A

10μ

VDD

VDD B1

B2 PVDD

VSTBY

A

STBY

C2

Bias

OSC

0.1μ IN+

A1

Vin

0.1μ IN-

Vin

C1

PWM

H-

Bridge

GND A2

B3 PGND

OUT-

A3

22μH

1μ

8

V VSE

V VBTL

OUT+

C3

22μH

1μ

V VSE

●Active / Standby Control

STBY Pin(C2pin)

Mode

Active

Standby

Pin level

H

L

Conditions

IC active

IC shutdown

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2/16

2010.06 - Rev.A

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