Ordering number : ENA0739D
Bi-CMOS IC
LV4991TT
Overview
For Portable Audio Equipment
Monaural BTL Power Amplifier
LV4991TT incorporates the power amplifier circuit operable at low voltage (2.7V or more) and has additionally the
standby function to reduce the current drain. This is the best LSI for speaker drive for the battery-driven portable
equipment, such as IC recorders, portable radios, etc. The LV4991TT is a MSOP8 (150mil) package, and The LV4991TH
of HMSOP8 (150mil) package is available.
Function and Feature
•
Monaural BTL power amplifier incorporated
Standard output power = 450mW (VCC = 3.6V, RL = 8Ω, THD = 10%)
Output coupling capacitor not necessary because of differential output type
•
Operation at low voltage possible
VCC = 2.7V or more
•
Standby function incorporated
Standard current drain at standby = 0.1µA (VCC = 3.6V)
•
Second amplifier stop control function incorporated : Reducing the pop sound at startup, simple MUTE
•
Overheat protection circuit incorporated
•
Gain setting possible
BTL voltage gain = 0 to 26dB
•
Output phase compensation capacitor not necessary
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.
51408 MS 20080423-S00003 / 80807 MS / 62707 MS PC / 52307 MS IM / 41807 MS PC 20070322-S00004 No.A0739-1/11
LV4991TT
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Topr
Tstg
Substrate mounted*
Conditions
Ratings
6
750
-40 to +85
-40 to +150
Unit
V
mV
°C
°C
* Substrate mounted : with 58mm
×
89mm
×
1.6mm, glass epoxy substrate
Operating Conditions
at Ta = 25°C
Parameter
Recommended supply voltage
Recommended load resistance
Allowable operating supply
voltage range
Symbol
VCC
RL
VCC op1
VCC op2
(at RL = 8Ω)
(at RL = 16 to 32Ω)
Conditions
Ratings
3.6
8 to 32
2.7 to 4.3
2.7 to 5.5
Unit
V
Ω
V
V
* Determine the supply voltage to be used with due consideration of allowable power dissipation.
Electrical Characteristics
Ta
=
25°C, VCC = 3.6V, fin = 1kHz, RL = 8Ω
Parameter
Quiescent current drain
Stand-by current drain
Maximum output power
Voltage gain
Voltage gain use range
Total harmonic distortion ratio
Output noise voltage
Ripple removal ratio
Output offset voltage
Reference (pin 3) voltage
Pin 2 control HIGH voltage
Pin 2 control LOW voltage
Pin 4 control HIGH voltage
Pin 4 control LOW voltage
Symbol
ICCOP
ISTBY
POMX
VG
VGR
THD
VNOUT
SVRR
VOS
VREF
VSTBH
VSTBL
VCNTH
VCNTL
Power amplifier operation mode
Power amplifier standby mode
Second power amplifier operation mode
Second power amplifier standby mode
1.9
0
1.6
0
VIN = -30dBV
Rg = 620Ω, 20 to 20kHz
Rg = 620Ω, fr = 100Hz, Vr = -20dBV
Rg = 620Ω
-50
1.81
VCC
0.3
VCC
0.3
Conditions
min
No signal, RL =
∞
No signal, RL =
∞,
V2 = LOW
THD = 10%
VIN = -30dBV
300
4.5
0
0.3
120
48
50
Ratings
typ
3.6
0.1
450
6
7.5
26
1
280
max
6
10
mA
µA
mW
dB
dB
%
µVrms
dB
mV
V
V
V
V
V
Unit
No.A0739-2/11
FPGA/CPLD
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