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Ordering number : ENA0932
LV4992TT
Bi-CMOS IC
For Portable Audio Equipment
Stereo SE Power Amplifier
Overview
The LV4992TT is the best LSI for the speaker drive for portable equipment that is battery drive, including the power
amplifier circuit capable of low voltage (from 2.7V) operation and stand-by function to reduce the consumption
current.
Functions and Features
Built-in stereo SE power amplifier
Output power 1= 160mW (VCC = 3.6V, RL = 8Ω and THD = 10%)
Output power 2= 340mW (VCC = 5.0V, RL = 8Ω and THD = 10%)
Output power 3= 55mW (VCC = 3.6V, RL = 32Ω and THD = 10%)
Output power 4= 110mW (VCC = 5.0V, RL = 32Ω and THD = 10%)
Enabling low voltage operation : VCC = from 2.7V
Standby function : (supply current in standby mode : 0.1μA (standard) : (VCC = 3.6V)
Thermal shut down circuit
Enabling gain setting : Voltage gain (0 to 14dB)
No capacitor for output phase compensation is necessary.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Symbol
VCC max
Pd max
Conditions
Substrate mounted*
Operating temperature
Topr
Storage temperature
Tstg
* When mounted on the specified printed circuit board ( 58 × 89 × 1.6mm, glass epoxy, both side)
Ratings
6
750
-40 to +85
-40 to +150
Unit
V
mV
°C
°C
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
92607 MS PC 20070903-S00001 No.A0932-1/10
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LV4992TT
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Recommended load resistance
Operating supply voltage range
Symbol
VCC
RL
VCC op
Conditions
Note : Please determine supply voltage used with due consideration of allowable power dissipation
Ratings
3.6
8 to 32
2.7 to 5.5
Unit
V
Ω
V
Electrical Characteristics Ta = 25°C, VCC = 3.6V, fin = 1kHz, RL = 8Ω
Parameter
Symbol
Conditions
Supply current during no signal
Standby supply current
Output power
Voltage gain
Voltage gain difference
Total harmonic distortion
Output noise voltage
Channel separation
Ripple rejection ratio
Reference voltage (pin 3)
High level control voltage (pin 2)
Low level control voltage (pin 2)
ICCOP
ISTBY
POMX
VG
VGR
THD
VNOUT
CHSEP
SVRR
VREF
VSTBH
VSTBL
No signal
No signal, V2 = LOW
THD = 10%
VIN = -30dBV
VIN = -10dBV
Rg = 620Ω, 20 to 20kHz
PO = 50mW, Rg = 620Ω and 20 to 20kHz
Rg = 620Ω, fr = 100Hz and Vr = -20dBV
Power amplifier operation mode
Power amplifier standby mode
min
100
5
0
50
1.9
0
Ratings
typ
2.7
0.1
160
6.5
0.1
65
60
47
1.81
max
4.5
10
8
14
1
195
VCC
0.3
Unit
mA
μA
mW
dB
dB
%
μVrms
dB
dB
V
V
V
Package Dimensions
unit : mm (typ)
3245B
3.0
8
12
(0.53)
0.65
0.25
0.125
Pd max – Ta
1000 When mounted on the
900 specified printed circuit board :58×89×1.6mm3
800
Specified printed circuit board
(Both sides)
750
700
Specified printed circuit board
(Single sides)
650
glass epoxy board
600
500
400 390
338
300
200
100
0
40
20 0
20 40 60 80
Ambient temperature, Ta – °C
100
SANYO : MSOP8(150mil)
No.A0932-2/10
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Recommended Board Layout
1. Both side
Size : 58mm×89mm×1.6mm
LV4992TT
Top Layer
2. Single side
Size : 58mm×89mm×1.6mm
Bottom Layer
Top Layer
Bottom Layer
No.A0932-3/10
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LV4992TT
Block Diagram and Sample Application Circuit
R2
22kΩ
C2
0.1μF
+ C1 VCC
2.2μF
C3 R1
0.22μF 10kΩ IN1
from CPU
R3
10kΩ STBY
1
2
BIAS
VREF
C4
C5 1μF
0.22μF
IN2
R4
10kΩ
3
4
VCC
- AMP1
+
TSD
8 OUT1
VCC
7
VCC
GND
6
GND
+ AMP2
-
5 OUT2
C6
220μF
+
C7
220μF
+
R5
22kΩ
SPEAKER
8Ω
SPEAKER
8Ω
Test Circuit
S1 0.22μF 10kΩ
1
620Ω
VSTBY
10kΩ
2
VIN 3
1μF
S2 0.22μF
4
10kΩ
620Ω
22kΩ
LA4992TT
22kΩ
0.1μF
+ VCC
2.2μF
220μF
8+
7
SPEAKER
8Ω
6
220μF
5+
SPEAKER
8Ω
No.A0932-4/10
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LV4992TT
Pin Function
Pin No.
Pin name
1 IN1
4 IN2
Pin voltage
VCC = 3.6V
1.81
Description
Input pin
2 STBY
Standby pin
Standby mode (0 to 0.3V)
Operation mode (1.9 to VCC)
Equivalent circuit
VCC
1
4
3kΩ
-
+
VCC
3 VREF
1.81
Ripple filter pin
(Capacity connection for filter)
5 OUT2
8 OUT1
1.81 Power amplifier output pin
6 GND
7 VCC
0 Ground pin
3.6 Power supply pin
2 21kΩ
GND
VCC
3
450kΩ
VCC
VCC
-
+
10kΩ
GND
5
8
No.A0932-5/10
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