ROHM BD5466GUL Technical data

A

Small-sized Class-D Speaker Amplifiers

Analog Input
Monaural Class-D Speaker Amplifier

BD5466GUL

●Description

BD5466GUL is a monaural Class-D speaker amplifier that contained ALC function for mobile phone, portable type
electronic devices etc. LC filter of speaker output is not needed, can form monaural speaker amplifier. with 3 external parts.
ALC, short for A
(clip) of output wave form during excessive input. The time until the limit release operation of output level is called the
release time (or recovery time). This IC adopts high-speed release time (4ms/1dB Typ.) and suits the application which
repeats big volume in the short time such as the camera shutter sound.
Through Class-D operation, efficiency is high low power consumption, that is why it’s suitable for battery drive application.
The current consumption during shutdown when lowered to 0.01μA(Typ.), from the shutdown to the operation time is early
and at the same time pop sound is few that is why its also suitable in repeating active and shutdown.

●Feature

1) Contains Digital ALC (A

2) External Parts: 3points

3) Ultra slim type package: 9pin WL-CSP(1.7×1.7×0.55mmMax.)

4) BD5460/61GUL (No ALC Function, Gain Fixed Goods) Pin Compatible Specs
BD5465/67/68GUL (ALC Function, Gain Fixed Goods) Pin Compatible Specs

5) Maximum Gain: 18dB(Typ.) [during ALC operation, 18～3dB@1dB Step]

6) ALC high speed release(recovery) time: 4ms/1dB(Typ.)

7) Limit output power : 0.7W (Typ.) [VDD=4.2V, RL=8Ω, THD+N≦1%]
: 0.5W (Typ.) [VDD=3.6V, RL=8Ω, THD+N≦1%]

8) Audio Analog Input (corresponds to single-end input / differential input)

9) Output LC filter free

10) Pop noise suppression circuit

11) Shutdown Function (use as mute at the same time) [low shutdown current = 0.01μA (Typ.) ]

12) Contains protection circuit: output short, thermal shutdown, under voltage lockout (UVLO)

●Applications

Mobile phone, Portable audio device, PND, DSC, Note-PC etc.

●Absolute Maximum Rating(Ta=+25℃)

utomatic Level Control, is a function that automatically adjusts up to the level of suppression of distortion

utomatic Level Control) Function

No.10101EAT06

Parameter Symbol Ratings Unit

Power Supply Voltage

Power Dissipation Pd 690※ mW
Storage Temperature Range Tstg -55 ～ +150 ℃

SDNB Pin Input Range V

IN+, IN- Pin Input Range VIN -0.3～VDD+0.3 V

※ In case Ta=+25℃ or more, 5.52 mW decrease per 1℃
When mounting Rohm Typical Board 50.0mm×58.0mm (Material: Glass Epoxy)

●Operation Range

Parameter Symbol Range Unit

Temperature Topr -40 ～ +85 ℃

Power Supply Voltage

Common Mode Input Voltage Range VIC +0.5 ～ VDD-0.8 V

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

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VDDmax

PVDDmax

-0.3～VDD+0.3 V

SDNB

VDD

PVDD

7.0 V

+2.5 ～ +5.5 V

2010.09 - Rev.

BD5466GUL

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●Electrical Characteristic (Ta=+25℃, VDD=+3.6V, Unless specified otherwise)

Technical Note

Parameter Symbol

Min. Typ. Max.

Limits

Unit Conditions

＜All Device＞

Circuit current (no signal) ICC ― 3 6 mA

Circuit current (shutdown) I

― 0.01 2 μA

SDN

IC Active, No Load

=VDD

V

SDNB

IC Shutdown
V

=GND

SDNB

＜Audio Feature＞

Limit output power PO

Total harmonic distortion T

Maximum Gain G

ALC Limit level V

ALC Release level V

Switching frequency f

HD+N

MAX

LIM

REL

OSC

0.035

×VDD

0.044

2

×VDD

― 0.2 1 %

17 18 19 dB BTL, *1

1.5

×VDD

1.19

×VDD

1.68

×VDD

1.34

×VDD

150 250 350 kHz

0.055

2

2

×VDD

2

BTL, f=1kHz, R

W

THD+N≦1% , *1
BTL, fin=1kHz, R

P

=0.3W , *1

O

1.89

×VDD

1.5

×VDD

Vpp BTL, *1

Vpp BTL, *1

Start-up time TON 0.73 1.02 1.71 msec

Audio input resistance Ri 22 33.5 45 kΩ Gain=18dB

＜Control Terminal＞

=8Ω

L

L

=8Ω

SDNB terminal
Threshold voltage

SDNB terminal
Inflow Current

*1 Filter bandwidth for measurement: 400～30kHz, LC filter for AC measurement: L=22μH / C=1μF, BTL: Voltage between A3,C3

H V

L V

H I

L I

1.4 ― VDD V IC Active

SDNBH

0 ― 0.4 V IC Shutdown

SDNBL

12 24 36 μA V

SDBNH

-5 ― 5 μA V

SDNBL

● Shutdown control
Control terminal

SDNB

Conditions

H IC operation (active)

L IC stop (shutdown)

●ALC Parameter

ALC Parameter

Attack Time (Typ.) Release Time(Typ.) Gain Switch Step (Typ.)

～1ms/1dB @ fin=100Hz

～0.5ms/1dB @ fin=1kHz

～0.05ms/1dB @ fin=10kHz

4ms/1dB

@ fin=100～10kHz

±1dB

The gain switch timing during ALC operation occurs at zero cross point of audio output voltage.
For that, attack time, release time will change at input frequency “fin”.
ALC Parameter is fixed. ALC operation doesn’t correspond to noise of impulse.

SDNB

SDNB

=3.6V

=0V

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2010.09 - Rev.

BD5466GUL

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fRf

A

f

f

A

Technical Note

●Measurement Circuit Diagram

<Audio Characteristics Method of Evaluation >

■In case LC filter is not used

+Batte ry

Shutdown Signal

H : IC Active
L: IC Shutdown

SDNB

C 2

150 k
( Typ.)

B1 B2

VDD PVDD

Shutdown

Control

0 .1 uF

C 2

0 .1 uF

C

IN +

Ri

A1

IN

-

C 1

1

Ri

R

LC

A2 B3

BIAS

OSC

PWM

PGNDGND

C3

10uF

H­Bridge

OUT +

C3

OUT -

A3

BTL

LPF

AP AUX- 0025

Measument Instrument

Audio

Precision

)

(AP

■In case LC filter is used

+Battery

C3

10uF

B1 B2

Shutdown Signal

H: IC Active
L: IC Shutdown

SDNB

C 2

150k
( Typ.)

VDD PVDD

Shutdown

Control

BIAS

OSC

0. 1uF

C

0. 1uF

C

IN +

A1

Ri

R

2

IN-

C 1

1

Ri

R

LC

A2 B3

PWM

PGNDGND

H-

Bridge

22uH

C3

1uF

A3

22uH

1uF

BTL

Audio Precision

(AP )

Audio characteristics can be measured to insert LC filter between output pin and speaker load, if you don’t have
measurement equipment for switching amplifier, like AUX-0025, Audio Precision.
Arrange the LC filter directly close to output pin.

In case of L=22μH, C=1μF, cut off frequency becomes:

fc 

1





LC2



1

34kHz

F1H 222



For Inductor L, please use huge current type. (Reference)TDK : SLF12575T-220M4R0

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2010.09 - Rev.

BD5466GUL

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●External Dimension Diagram

Top View

Bottom View

5466

LOT No.

9pin WL-CSP(VCSP50L1)
[ 1.7×1.7×0.55mm Max, 0.5mm Pitch ]

Side View

●Block Diagram ●Pin Arrangement (Bottom View)

B1 B2

VDD PVDD

SDNB

C2

150k

(Typ.)

IN+

A1

Ri

IN-

C1

Ri

Shutdown

Control

BIAS

OSC

C1 C2 C3

IN-

B1 B2 B3

ALC

Rf

PWM

Rf

H­Bridge

OUT+

C3

OUT-

A3

Index Post

VDD PVDD PGND

A1 A2 A3

IN+ GND OUT-

A2 B3

PGNDGND

●Pin Explanation

Technical Note

(Unit : mm)

SDNB

OUT+

Pin No. Pin Name Explanation

A1 IN+ Audio differential input + terminal

A2 GND GND terminal (signal)

A3 OUT- Class-D BTL output - terminal

B1 VDD VDD terminal (signal)

B2 PVDD VDD terminal (power)

B3 PGND GND terminal (power)

C1 IN- Audio differential input - terminal

C2 SDNB Shutdown control terminal

C3 OUT+ Class-D BTL output + terminal

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

2010.09 - Rev.

BD5466GUL

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A

A3A

fRf

A

A

A

A

A3A

fRf

A

A

A

●Application circuit example

SHORT the power supply pin VDD (B1), PVDD (B2) at board pattern, then use singleness power supply.

+Battery

Singleness power supply (+2.5～+5.5V)

Shutdown Control

Shutdown Signal

H :IC Active
L: IC Shutdown

SDNB

C2

Signal VDD

150k
( Typ.)

B1 B2

VDD PVDD

Shutdown

Control

BIAS

OSC

C 3

10 uF

Power VDD

Differential
Input

udio

Input +

0.1uF

udio

Input-

Audio Differential Input

0.1uF

IN+

IN-

C1

Ri

1

Ri

Signal GND

R

LC

2 B 3

PWM

PGNDGND

H­Bridge

Power GND

Fig1. Differential Input(With Input Coupling Capacitor)

+Battery

Singleness power supply(+2.5～+5.5V)

Shutdown Control

Shutdown Signal

H :IC Active
L : IC Shutdown

SDNB

C2

Signal VDD

150k

Typ.)

(

B1 B2

VDD PVDD

Shutdown

Control

BIAS

OSC

C 3

10 uF

Power VDD

Differential
Input

udio

Input +

udio

Input -

Audio Differential Input

IN+

IN-

C1

Ri

1

Ri

R

Signal GND

LC

2 B3

PWM

PGNDGND

H­Bridge

Power GND

Fig2. Differential Input(Without Input Coupling Capacitor)

Technical Note

Class-D BTL Output

OUT +

C3

OUT -

Class-D BTL Output

OUT +

C3

OUT -

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

2010.09 - Rev.

BD5466GUL

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A

A 3A

A

fRf

A

A

A

A

A

f

f

A

Audio Single End Input

Audio Single End Input

Shutdown Control

Shutdown Signal

H :IC Active

IC Shutdown

L :

udio

Input

Shutdown Control

Shutdown Signal

H :

IC Active
IC Shutdown

L:

udio

Input

0.1uF

0.1uF

0. 1uF

0. 1uF

Technical Note

+Battery

Signal VDD

B1 B2

VDD PVDD

SDNB

C 2

IN +

1

IN -

C 1

Ri

Ri

150k

Typ)

(

Signal GND

Shutdown

Control

LC

R

2 B3

Fig3. Single end input (during IN+ input)

+Battery

B1 B2

VDD PVDD

SDNB

C2

IN +

1

IN -

C1

Ri

Ri

150k

Typ.)

(

Signal GND

Shutdown

Control

LC

R

R

2 B3

Fig4. Single end input (during IN- Input)

Singleness power supply (+2.5～+5.5V)

C3

10uF

Power GND

Power GND

Power VDD

H-

Bridge

C3

10uF

Power VDD Signal VDD

H­Bridge

BIAS

OSC

PWM

PGNDGND

Singleness power supply (+2.5～+5.5V)

BIAS

OSC

PWM

PGNDGND

Class-D BTL Output

OUT +

C3

OUT -

Class-D BTL Output

OUT +

C 3

OUT -

3

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

2010.09 - Rev.