Ordering number : ENA1568
Bi-CMOS IC
LV4985VH
Overview
For Portable Electronic Device Use
1.2W
×
2ch BTL Power Amplifier
The LV4985VH has a 2-channel power circuit amplifier including an electronic volume control built in. It has a function
for switching the headphone driver and also has a standby function to reduce the current drain. It is a power amplifier IC
optimal for driving the speakers used in portable equipment and low power output equipment.
Applications
Portable DVD players, active speakers, compact LCD-TVs/LCD monitors, notebook PCs and more.
Features
•
2-cannels BTL power amplifier built-in : Standard output power = 1.2W (VCC = 5V, RL = 8Ω, THD = 10%)
Output coupling capacitor is unnecessary because of differential output type.
•
Volume function built-in (variable range: 69dB standard), DC voltage control system
•
Mute function built-in (shared with VOL-min)
•
Standby function built-in (three-value control
⇒
Shared with the second amplifier stop control pin) :
Standard standby current = 0.01μA (VCC = 5V)
•
Second amplifier stop control function built-in (three-value control
⇒
Shared with the standby pin) :
Headphone driver switch (for BTL/SE switch)
Simple MUTE (Only BTL power amplifier path)
•
Thermal protection circuit built-in
•
Operation supply voltage range : VCC = 4.5V to 5.5V
•
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.
O1409 SY PC 20090914-S00001 No.A1568-1/15
LV4985VH
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Maximum junction temperature
Operating temperature
Storage temperature
Symbol
VCC max
Pd max
Tj max
Topr
Tstg
* Mounted on a specified board.*
Conditions
Ratings
6
1.45
150
-20 to +75
-40 to +150
Unit
V
W
°C
°C
°C
* Specified board (SANYO Semiconductor Evaluation board) : 50mm
×
50mm
×
1.6mm, glass epoxy both side.
Operating Conditions
at Ta = 25°C
Parameter
Recommended supply voltage
Recommended load resistance
Allowable operating supply voltage
range
Symbol
VCC
RL
VCC op
Conditions
Ratings
5
8 to 32
4.5 to 5.5
Unit
V
Ω
V
Electrical Characteristics
at Ta
=
25°C, VCC = 5V, fin = 1kHz, RL = 8Ω, V9 = 2.5V, V10 = 3V,
pwr-amp-VG = 20.7dB
Parameter
Quiescent current drain
Standby current drain
Maximum output power
BTL voltage gain
Volume voltage gain
Channel balance
Total harmonic distortion
Maximum output noise voltage
Minimum output noise voltage
Channel separation
Volume variable range
Mute attenuation level
Ripple rejection ratio
Output DC offset voltage
Reference voltage
Volume maximum control voltage
Muting control voltage
High level control voltage (pin 9)
Middle level control voltage (pin 9)
Low level control voltage (pin 9)
Symbol
ICCOP
ISTBY
PO max
VG
VGVOL
CHBAL
THD
VN max
VN min
CHsep
WVOL
ATTMT
SVRR
VOS
VREF
MXVOL
VMT
V9CH
V9CM
V9CL
Pin 6 voltage,
Amplifier operation reference DC voltage source
Pin 10 control voltage
Pin 10 control voltage
Full operating mode (BTL mode)
Second amplifier non-operating mode (SE mode)
Standby (shutdown) mode
2.8
0
2.3
1.3
0
0.25
VCC
1.7
0.3
V
V
V
V
V
No signal, no load
No signal, V9 = 0.3V
THD = 10%
Vin = -30dBV
Vin = -30dBV, volume output pin
Vin = -30dBV
Vin = -30dBV
Rg = 620Ω, 20 to 20kHz
Rg = 620Ω, 20 to 20kHz
Vin = -20dBV, Rg = 620Ω
Vin = -30dBV
Vin = -10dBV, V10 = 0.25V, 1kHz-BPF
Rg = 620Ω, fr = 100Hz, Vr = -20dBV
-30
2.5
-72
58
-2
0.8
25.8
Conditions
min
Ratings
typ
11.5
0.01
1.2
27.8
7.1
0
0.4
0.7
0.06
66
69
-82
30
+30
+2
1
1.4
29.8
max
20
5
mA
μA
W
dB
dB
dB
%
mVrms
mVrms
dB
dB
dBV
dB
mV
V
Unit
No.A1568-2/15
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