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Ordering number : ENA1567
LV49157V
Bi-CMOS LSI
Class-D Audio Power Amplifier with built-in
Headphone Ampifier
BTL 15W × 2ch
Overview
The LV49157V is a 15W per channel stereo digital power amplifier that takes analog inputs. The LV49157V uses unique
SANYO-developed feedback technology to achieve excellent audio quality despite being a class D amplifier and can be
used to implement high quality flat display panel (FDP) based systems.
Features
BTL output, class D amplifier system
Unique SANYO-developed feedback technology achieves superb audio quality
High-efficiency class D amplifier
Soft muting function reduces impulse noise at power on/off
Full complement of built-in protection circuits : over current protection, thermal protection, and low power supply
voltage protection circuits
Built in Power limiter
Built in Headphone Amplifier
Functions
Power : 15W × 2ch output (VD = 15V, RL = 8Ω, fin = 1kHz, AES17, THD + N = 10%)
Efficiency : 93% (VD = 15V, RL = 8Ω, fin = 1kHz, PO = 15W)
THD + N : 0.08% (VD = 15V, RL = 8Ω, fin = 1kHz, PO = 1W, Filter : AES17)
Noise : 90μVrms (Filter : A-weight)
60mW Stereo headphone Amplifier (VD = 15V, RL = 16Ω, THD + N = 10%)
Package SSOP44J (275mil)
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.
N0409 SY 20090918-S00001 No.A1567-1/30
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LV49157V
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum supply voltage
VD Supply voltage
Allowable power dissipation
Pd max
Our PCB, Soldered *
Package thermal resistance
θjc
Our PCB, Soldered *
Our PCB, Not soldered *
Maximum junction temperature
Tj max
Operating temperature
Topr
Storage temperature
Tstg
* : Mounted on a specified board 110.0mm × 100.0mm × 1.5mm, glass epoxy (two-layer)
Recommended Operating Range at Ta = 25°C
Parameter
Supply voltage range
Load impedance range
Symbol
VD
RL
RL(HP)
Conditions
Supply voltage
Speaker load
Headphone
Ratings
20
5
2.1
3.6
150
-25 to +75
-50 to +150
Unit
V
W
°C/W
°C/W
°C
°C
°C
min
9
4
Ratings
typ
15
8
16
max
18
Unit
V
Ω
Ω
Electrical Characteristics at Ta = 25°C, VD = 15V
Parameter
Symbol
Conditions
Main Amplifier (RL = 8Ω,L = 33μH (TOKO : A7502BY-330M), C = 0.1μF,CL=0.47μF)
Standby current
Ist STBY = L, MUTE = L
Mute current
Imute
STBY = H, MUTE = L
Quiescent current
Voltage gain
Offset voltage
ICCO
VG
Voffset
STBY = H, MUTE = H
fin = 1kHz, VO = 0dBm
Rg = 0
Ratings
Unit
min typ max
14
35
28
-150
1 10 μA
20 26 mA
45 55 mA
30 32 dB
150 mV
Total harmonic distortion
Output power
Channel separation
Ripple rejection ratio
Noise
High-level input voltage
Low-level input voltage
Under voltage protection UPPER
THD+N
PO
CH sep.
SVRR
VNO
VIH
VIL
UV_UPPER
PO = 1W, fin = 1kHz, AES17
THD+N = 10%, AES17
Rg = 0, VO = 0dBm, DIN AUDIO
fr = 100Hz, Vr = 0dBm, Rg = 0, DIN AUDIO
Rg = 0, A-weight
STBY and MUTE pin
STBY and MUTE pin
VD voltage measure
0.08
13 15
55 70
50 60
90
3
0
8.0
0.4 %
W
dB
dB
300 μVrms
VD V
1V
V
Under voltage protection LOWER UV_LOWER VD voltage measure
7.0 V
Headphone Amplifier(RL = 16Ω,fin=1kHz)
Quiescent current
ICCO
Voltage gain
VG
Total harmonic distortion
THD+N
Output power
Channel separation
PO
CH sep.
Ripple rejection ratio
SVRR
HP_STBY = H
VO = -10dBm
PO = 10mW, DIN AUDIO
THD+N = 10%, DIN AUDIO
fin=1kHz, Rg = 0, VO = -10dBm, DIN AUDIO
fr = 100Hz, Vr = 0dBm, Rg = 0, DIN AUDIO
8 12 mA
9.5 11.5 13.5 dB
0.05
0.3 %
48 60 72 W
55 70
dB
55 70
dB
Noise
VNO
Rg = 0, A-weight
12 60 μVrms
High-level input voltage
VIH HP_STBY pin
3 VD V
Low-level input voltage
VIL HP_STBY pin
0 1V
Note : The values of these characteristics were measured in the SANYO test environment. The actual values in an end system will vary depending on the
printed circuit board pattern, the external components actually used, and other factors.
No.A1567-2/30
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Package Dimensions
unit : mm (typ)
3285
TOP VIEW
15.0
44
23
LV49157V
BOTTOM VIEW
Exposed Die-Pad
1
(0.68)
0.65
22
0.22
SIDE VIEW
0.2
SANYO : SSOP44J(275mil)
Pd max - Ta
8
Mounted on a specified board : 110 × 100 × 1.5mm3
glass epoxy (two-layer)
6
Soldered = 5.05W
4
Not Soldered = 3.35W
2
0
25 0
25 50 75 100
Ambient temperature, Ta - C
Pin Assignment
125
150
44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23
LV49157
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
Top view
No.A1567-3/30
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LV49157V
Block Diagram and Application Circuit
0-5V
0-5V
VIN1+
VIN2+
+
HP_IN1
HP_IN2
RL(HP)
RL(HP)
0-5V
1 MUTE
STBY
2
3
4 VIN1-
PLC
5
6 VIN2-
7
8 MUTECAP
VCC
9
10 BIASCAP
VBIAS
11
VREG5
12
13 GND
14
+ 15 HP_RF
16
HP_GND1
17
+
HP_OUT1
18
HP_REF
19
+
HP_OUT2
20
HP_GND2
21
HP_STBY
22
FB
REC. & CONT.
OUTPUT
OUTPUT
FB
START
SEQUENCE
POWER LIMITER
FB
OUTPUT
REC. & CONT.
OUTPUT
FB
+
PVD1 44
PVD1
43
OUT1+
42
OUT1+
41
BOOT1+
40
VDD1 39
38 BOOT1-
37 OUT1-
OUT1-
36
PGND1 35
PGND1 34
PGND2 33
PGND2 32
31 OUT2-
OUT2-
30
29 BOOT2-
VDD2 28
27 BOOT2+
26 OUT2+
OUT2+
25
PVD2 24
PVD2 23
+
SP
VD
SP
No.A1567-4/30
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Pin Equivalent Circuit
Pin No.
1
Pin name
MUTE
I/O
I
LV49157V
Description
Mute control pin
2 STBY
I Standby control pin
3 VIN1+
I Input pin, CH1 plus
4 VIN1-
I Input pin, CH1 minus
5 PLC
I Power level control pin
Equivalent Circuit
VD
250kΩ
10kΩ
1
100kΩ
GND
VD
250kΩ
10kΩ
2
100kΩ
GND
VD
300Ω
3
30kΩ
VBIAS
GND
VD
300Ω
4
30kΩ
VBIAS
GND
VD
200Ω
5
GND
Continued on next page.
No.A1567-5/30
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