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PDF BD5468GUL Data sheet ( Hoja de datos )
| Número de pieza | BD5468GUL | |
| Descripción | Analog Input Monaural Class-D Speaker Amplifier | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Small-sized Class-D Speaker Amplifiers
Analog Input
Monaural Class-D Speaker Amplifier
BD5468GUL
No.10101EAT08
●Description
BD5468GUL 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 Automatic Level Control, is a function that automatically adjusts up to the level of suppression of distortion
(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 (Automatic Level Control) Function
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
BD5465/66/67GUL (ALC Function, Gain Fixed Goods) Pin Compatible Specs
5) Maximum Gain: 13dB (Typ.) [during ALC operation, 13～-2dB@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℃)
Parameter
Symbol
Ratings
Power Supply Voltage
Power Dissipation
VDDmax
PVDDmax
Pd
7.0
690※
Storage Temperature Range
Tstg -55 ～ +150
SDNB Pin Input Range
VSDNB
-0.3～VDD+0.3
IN+, IN- Pin Input Range
VIN -0.3～VDD+0.3
※ In case Ta=+25℃ or more, 5.52 mW decrease per 1℃
When mounting Rohm Typical Board 50.0mm×58.0mm (Material :Glass Epoxy)
Unit
V
mW
℃
V
V
●Operation Range
Parameter
Symbol
Temperature
Topr
Power Supply Voltage
VDD
PVDD
Common Mode Input Voltage Range
VIC
◎ This product is not designed for protection against radioactive rays.
Range
-40 ～ +85
+2.5 ～ +5.5
+0.5 ～ VDD-0.8
Unit
℃
V
V
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/19
2010.09 - Rev.A
1 page  
BD5468GUL
Technical Note
●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 VDD B 1
C3
10 uF
B2 PVDD Power VDD
150k
(Typ.)
Shutdown
Control
BIAS
OSC
Audio
Input +
Differential
Input
Audio
Input -
0 .1 uF
IN+
A1
Ri
0 .1 uF
IN-
C1
Ri
ALC
Rf
Rf
PWM
H-
Bridge
Class-D BTL Output
OUT +
C3
OUT -
A3
Audio Differential Input
Signal GND GND A2
B 3 PGND
Power GND
Fig1. Differential Input (With Input Coupling Capacitor)
+Battery
Singleness power supply(+2.5～+5.5V)
Shutdown Control
Signal VDD VDD B 1
C3
10 uF
B 2 PVDD Power VDD
Shutdown Signal
H: IC Active
L: IC Shutdown
SDNB
C2
150k
(Typ.)
Shutdown
Control
Audio
Input +
Differential
Input
Audio
Input -
IN+
A1
Ri
IN-
C1
Ri
ALC
Rf
Rf
BIAS
OSC
PWM
H-
Bridge
Class-D BTL Output
OUT +
C3
OUT -
A3
Audio Differential Input
Signal GND GND A2
B3 PGND Power GND
Fig2. Differential Input (Without Input Coupling Capacitor)
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
5/19
2010.09 - Rev.A
5 Page 
BD5468GUL
●Evaluation Board Circuit Diagram
VDD
VDD
VDD B1
C3
10uF
B2 PVDD
Shutdown Signal
H： IC Active
SDNB
C2
L： IC Shutdown
150k
(Typ.)
Shutdown
Control
Audio Input
Audio
Input+
0.1uF
Differential
Input
Audio
Input-
C2
0.1uF
C1
IN+
Ri
A1
ALC
Rf
IN-
C1
Ri
Rf
GND GND A2
BIAS
OSC
PWM
H-
Bridge
B3 PGND
OUT+
C3
OUT-
A3
Technical Note
Connect to GND
Connect to Power Supply
(VDD=+2.5～5.5V)
BD5468GUL
Connect to input signal
Connect to Speaker
※Power Supply terminals VDD(B1), PVDD(B2) are SHORT in the board pattern and use a single power.
●Evaluation Board Parts List
Qty. Item
2 C1, C2
Description
Capacitor, 0.1μF
1 C3
Capacitor, 10μF
1 S1
Slide Switch
1
U1
IC, BD5468GUL,
Mono Class-D Audio Amplifier
1 PCB1
Printed-Circuit Board,
BD5468GUL EVM
SMD Size
0603
A (3216)
4mm X 10.2mm
1.7mm X 1.7mm
WLCSP Package
―
Manufacturer/
Part Number
Murata
GRM188R71C104KA01D
ROHM
TCFGA1A106M8R
NKK
SS-12SDP2
ROHM
BD5468GUL
―
●About the external part
① Input coupling capacitor (C1, C2)
Input coupling capacitor is 0.1μF.
Input impedance during maximum gain 13dB is 55kΩ (Typ.). A high-pass filter is composed by the input coupling
capacitor and the input impedance.
Cut-off frequency”fc” by the formula below, through input coupling capacitor C1(=C2) and input impedance Ri.
fc 1 ٛٛٛٛ
2 Ri C1
In case of Ri=55kΩ, C1(=C2)=0.1μF, cut-off frequency is about 29Hz
② Power Supply Decoupling Capacitor (C3)
Power Supply Decoupling Capacitor is 10uF. When the capacity value of Power Supply Decoupling Capacitor is made
small, it will have an influence to the audio characteristics. When making it small, be careful with the audio characteristics
at actual application. ESR (equivalent series resistor) is low enough; please use capacitor with capacity value of 1μF or
more.
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
11/19
2010.09 - Rev.A
11 Page | ||
| Páginas | Total 22 Páginas | |
| PDF Descargar | [ Datasheet BD5468GUL.PDF ] | |
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