Monolithic Linear LA42351 1-Channel Power Amplifier With Vol
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Ordering number ENA1036
Monolithic Linear
LA42351
1-Channel Power Amplifier With Volume Control
LA42351 1-channel power amplifier with volume control intended televisions.
Features
(VCC 18V, 10%) (VCC 14V, 10%) Built-in Volume Control. Built-in Standby function. Built-in overheat protection. LA42000 series power which made compatible possible altogether 15W. They consist four kinds power ICs. (mono, stereo, mono with volume function, stereo with volume function.). They realized layout communalization audio power block Since some external parts different, however, pattern design must enable sharing substrate.
LA42051 LA42052 LA42351 LA42352 LA42071 LA42072 LA42152 Channel Mono Stereo Volume
SANYO Semiconductor Co.,Ltd. products described contained herein are, with regard "standard application", intended general electronics equipment (home appliances, equipment, communication device, office equipment, industrial equipment etc.). products mentioned herein shall intended "special application" (medical equipment whose purpose sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level reliability directly threaten human lives case failure malfunction product cause harm human bodies, shall they grant guarantee thereof. should intend products applications outside standard applications customer considering such and/or outside scope intended standard applications, please consult with prior intended use. there consultation inquiry before intended use, customer shall solely responsible use. Specifications SANYO Semiconductor Co.,Ltd. products described contained herein stipulate performance, characteristics, functions described products independent state, guarantees performance, characteristics, functions described products mounted customer' products equipment. verify symptoms states that cannot evaluated independent device, customer should always evaluate test devices mounted customer' products equipment.
30508 20051226-S00003 No.A1036-1/8
LA42351
Specifications
Absolute Maximum Ratings 25°C
Parameter Maximum supply voltage Allowable power dissipation Maximum junction temperature Thermal resistance Operating temperature Storage temperature Symbol Topr Tstg signal Infinite heat sink Conditions Ratings +150 Unit °C/W
Operating Conditions 25°C
Parameter Recommended supply voltage Recommended load resistance Allowable operating voltage range Symbol Conditions Ratings Unit
Operating Characteristics 25°C, 18V, VCONT 1kHz,
Parameter Standby current Quiescent current Output power Total harmonic distortion Voltage gain Output noise voltage Volume attenuation Standby control voltage (The voltage) Input resistance Symbol ISTB ICCO VSTB-H VSTB-L Amplifier Volume 0dBm VCONT 20Hz 20kHz 100mV, VCONT with 1k-BPF Amplifier Amplifier 32.5 Conditions Ratings 34.5 0.13 36.5 mVrms Unit
*0dBm (600) 774.6mVrms
Package Dimensions
unit (typ) 3107B
Allowable power dissipation,
25.6 C0.7 (10.0) 2.0)
Infinite heat sink
11.7
3°C/W
11.2 (11.8)
15.4max
(13.9)
(0.8)
1.15
Ambient temperature,
SANYO SIP13H
No.A1036-2/8
LA42351
Block Diagram
Standby Power
Thermal protection circuit Input amplifier Output amplifier
Volume
Ripple Filter Block Ripple Filter
Sample Application Circuit
LA42351
Ripple Filter /25V /16V
N.C.
N.C.
N.C.
N.C.
/10V
1000 /25V
/16V
No.A1036-3/8
LA42351
Description
Symbol Voltage 17.6 Ripple filter reference Description Equivalent Circuit
5.1k
Input
4.4V
PRE_GND (Input voltage) Standby standby function when this ground level
(Input voltage) Control Volume
5.1k
5.1k
Power supply
Continued next page.
No.A1036-4/8
LA42351
Continued from preceding page.
Symbol Voltage Output Description Equivalent Circuit
5.1k
Negative feedback Power amplifier Connect capacitor
PWR_GND Power
Description External parts
Input capacitors. value 1.0F recommended capacitors. Note that low-frequency area characteristics adjusted changing Ripple filter capacitor. value recommended capacitors. Decreasing capacitance value excessively removing this capacitor causes ripple occur. However, increasing capacitance value does always cause ripple reduced. Decreasing capacitance value makes starting time earlier. Power capacitor. Output capacitors. value 470F recommended capacitors. Feedback capacitor. value recommended capacitors. Decreasing capacitance value lowers frequency response. Increasing capacitance value makes starting time later. Oscillation blocking capacitor. polyester film capacitor that good high frequency response temperature characteristic. Resistor connected series with oscillation blocking capacitor. Prevents phase shift attributable oscillation blocking capacitor that oscillation hard occur. Standby switch current limiting resistor. value recommended resistance (when applied voltage standby switch 10V). This resistor cannot removed.
No.A1036-5/8
LA42351
Features Inside Usage Note
Standby function standby switch pin. amplifier turned applying approximately more this through external resistor (R3). (5-2VBE) VBE=about 0.7V voltage excess applied standby switch, calculate value using following formula that current flowing into 500A less: (Applied voltage-2VBE) 500A
Standby applied voltage 5.1k
ISTB=500A less
1.4V (2VBE)
ISTB
-15k
Protector order prevent damage degradation which caused abnormally heated LA42351 thermal shutdown protector. Accordingly, junction temperature (Tj) climbs around 160°C inadequate heat dissipation, thermal shutdown protector will operate control output gradually into attenuation.
No.A1036-6/8
LA42351
f=1kHz RL=8 Rg=600 THD=10% Vol=5V
VCC=18V RL=8 Rg=600 Vol=5V
100Hz 1kHz 10kHz
0.01
[dBm]
[mVrms]
VCC=18V f=1kHz RL=8 Rg=600 VO=0dB(Vol=5V) AUDIO
VCC=18V RL=8 Rg=0 AUDIO
[mVrms]
0.01
VCC=18V RL=8 Rg=600 Po=1W Vol=5V
VCC=18V RL=8 AUDIO
1000
10000
100000
1000 [Hz]
10000
100000
Response
Response [dB] SVRR [dB]
SVRR
1000 [Hz] 10000 100000
VCC=18V RL=8 Rg=600 VO=0dB(f=1kHz) Vol=5V
VCC=18V RL=8,Rg=0 Vccr=0dBm Cvcc=0.1F Vol=5V
1000 [Hz] 10000 100000
No.A1036-7/8
LA42351
Icco
RL=OPEN Rg=0 Vol=0V
0.01
SANYO Semiconductor Co.,Ltd. assumes responsibility equipment failures that result from using products values that exceed, even momentarily, rated values (such maximum ratings, operating condition ranges, other parameters) listed products specifications SANYO Semiconductor Co.,Ltd. products described contained herein. SANYO Semiconductor Co.,Ltd. strives supply high-quality high-reliability products, however, semiconductor products fail malfunction with some probability. possible that these probabilistic failures malfunction could give rise accidents events that could endanger human lives, trouble that could give rise smoke fire, accidents that could cause damage other property. When designing equipment, adopt safety measures that these kinds accidents events cannot occur. Such measures include limited protective circuits error prevention circuits safe design, redundant design, structural design. event that SANYO Semiconductor Co.,Ltd. products described contained herein controlled under applicable local export control laws regulations, such products require export license from authorities concerned accordance with above law. part this publication reproduced transmitted form means, electronic mechanical, including photocopying recording, information storage retrieval system, otherwise, without prior written consent SANYO Semiconductor Co.,Ltd. information described contained herein subject change without notice product/technology improvement, etc. When designing equipment, refer "Delivery Specification" SANYO Semiconductor Co.,Ltd. product that intend use. Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. Upon using technical information products described herein, neither warranty license shall granted with regard intellectual property rights other rights SANYO Semiconductor Co.,Ltd. third party. SANYO Semiconductor Co.,Ltd. shall liable claim suits with regard third party's intellectual property rights which resulted from technical information products mentioned above.
This catalog provides information March, 2008. Specifications information herein subject change without notice.
No.A1036-8/8
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