LA4450. Specifications. Monolithic Linear IC 2-Channel, 26V, Power Amplifier for Bus and Track in Car Stereo. SIP x13.

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1 Ordering number : EN49E LA44 Monolithic Linear IC -Channel, 6V, Power Amplifier for Bus and Track in Car Stereo Overview The LA44 is a single package -channel power Amplifier that supports an operating voltage of 6V. It is particularly well suited for use as the bus and track power IC in car stereo applications. Additionally, since the LA44 can drive 4 loads, it can be used effectively in high-power high-end products. Furthermore, since it supports a high operating voltage and has low distortion, it is also optimal for use in TV and home audio products. Features Two channels in a single package PO = 1W (VCC = 6.4V, RL = 8, THD = %) PO = W (VCC = 6.4V, RL = 4, THD = %) Can drive 4 speakers Built-in standby switch Minimizes impulse noises Functions Standby switch (active on high (V) input) On-chip impulse noise protection circuit On-chip thermal protection circuit On-chip overvoltage and surge protection circuits SIP14 6.8x1.8 / SIP14H Specifications Maximum Ratings at Ta = C Parameter Symbol Conditions Ratings Unit Maximum supply voltage V CC max Rg = (no signal) V Maximum output current I O peak 4 A Allowable power dissipation Pd max Infinite heat sink* W Operating temperature Topr to 8 C Storage temperature Tstg 4 to C Note : * Set V CC and R L within ranges that do not cause Pd max to exceed W. (When V CC is V, R L should be 6 or larger and when V CC is V, R L should be 4 or larger.) Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. Operating Conditions at Ta = C Parameter Symbol Conditions Ratings Unit Recommended supply voltage V CC 6.4 V Recommended load resistance R L 8 Operating supply voltage range V CC op to V Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended Operating Ranges limits may affect device reliability. ORDERING INFORMATION See detailed ordering and shipping information on page 8 of this data sheet. Semiconductor Components Industries, LLC, 1 July, 1 D191NK Pd B8-618/98 MS JK/498HA(OT)/94TS/1 No.49-1/8

2 LA44 Electrical Characteristics at Ta = C, VCC = 6.4V, RL = 8,, Rg = 6 Ratings Parameter Symbol Conditions min typ max Unit Standby current Ist Standby switch off 1 A Quiescent current I CCO Rg = 8 14 ma Output power P O1 THD = % 1 W P O THD = %, R L = 4 W Voltage gain VG V O = dbm 49 1 db Total harmonic distortion THD P O = 1W..4 % Output noise voltage V NO Rg =, BPF-BW = Hz to khz.4 1. mv Ripple exclusion ratio SVRR Rg =, f R = Hz, V R = dbm 4 db Channel separation CHsep V O = dbm, Rg = k 4 db Standby control voltage Vst With a k resistor connected at pin 1. V CC V Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. Allowable power dissipation, Pd max -- W Infinite heat sink x x 1.mm Al x x 1.mm Al x x 1.mm Al Independent IC Pd max -- Ta Ambient temperature, Ta -- C Using silicon grease Heat sink attached with a torque of 9N cm No.49-/8

3 LA44 Package Dimensions unit : mm SIP14 6.8x1.8 / SIP14H CASE 1AQ ISSUE A GENERIC MARKING DIAGRAM* XXXXXXXXXX YMDDD XXXXX = Specific Device Code Y = Year M = Month DDD = Additional Traceability Data *This information is generic. Please refer to device data sheet for actual part marking. No.49-/8

4 LA44 Test Circuit VCC=6.4V μf μf DC VCC μf NF1 PRE CH1 LA44 BS1 OUT1 CH1 PWR CH PWR 6 4 4μF μf *.1μF.Ω RL=8Ω IN μf 1 14 IN NF ST 1 CH BS OUT 1 4μF μf *.1μF.Ω RL=8Ω OFF ON kω V *Polyester Film Capacitor 1. Features and Usage Notes Pin 1 is the standby pin. The IC operates when a voltage of V or higher is applied through the external resistor R1. Note that the maximum influx current to pin 1 is A. Changing the voltage gain The voltage gain VG can be lowered by connecting an IN external resistor in series between the NF pin (pins 8 and 14) and CNF. NF Ω RNf C NF KΩ OUT k VG = log RNf However, since the IC may oscillate if VG is db or lower, use a VG of 6dB or higher. The LA44 includes a thermal protection circuit to prevent damage to or destruction of the IC due to abnormal overheating. As a result, the output may be attenuated or cut off if the application heat sinking is inadequate. The LA44 includes an overvoltage protection circuit to protect the IC against power supply surges and abnormal voltages. This circuit has hysteresis characteristics : it operates at between 9 and 4V, and recovers at around 4V. Although the LA44 includes a current limiter circuit to prevent damage due to abnormal currents, care must still be exercised to prevent load shorts and other excessive current conditions. No.49-4/8

5 LA44 Application Circuit Example C1 μf/v C DC VCC 6.4V μf/v C 9 NF1 8 μf 6.V Ripple filter, impulse noise prevention circuit BS1 4μF/V Current limiter circuit 6 C9 CH1 μf/v OUT1 C8 C.1μF Ω R.Ω kω 4 RL=8Ω IN Pre-ground 11 C IN 1 NF 14 μf 6.V Bias circuit Ω Standby switch CH Overvoltage protection circuit kω Thermal shutdown protection circuit Current limiter circuit Power ground Power ground OUT C4 1 BS 4μF V μf/v C C6 R.1μF.Ω R L =8Ω 1 ST OFF kω R1 ON V C6, C:.1μF...mylar capacitors No.49-/8

6 Printed Circuit Board Pattern Example LA44 1 V CC C C4 C6 C C9 C C1 C R1 C C8 IN ST R R OUT OUT 1 Copper foiled side 9 mm VG = 1dB Rg = 6Ω THD = % RL = 8Ω PO -- VCC VG = 1dB Rg = 6Ω THD = % RL = 4Ω PO -- VCC Total harmonic distortion, THD -- % VCC = 6.4V RL = 8Ω VG = 1dB Rg = 6Ω Supply voltage, VCC -- V THD -- PO f = khz Hz 1kHz.1 1. Total harmonic distortion, THD -- % V CC = 6.4V R L = 4Ω VG = 1dB Rg = 6Ω Supply voltage, VCC -- V THD -- PO f = khz Hz 1kHz.1 1. No.49-6/8

7 LA44 Response -- db f Response VG = 1dB converted to db. V CC = 6.4V Rg = 6Ω Ripple exclusion ratio, SVRR -- db CH1 CH SVRR -- fr V CC = 6.4V Rg = VG = 1dB V CCR = dbm Ripple exclusion ratio, SVRR -- db k k k Frequency, f -- Hz SVRR -- VCCR V CC = 6.4V Rg = VG = 1dB f R = Hz Quiescent current, I CCO -- ma k k Ripple frequency, f R -- Hz ICCO -- VCC Rg = Output noise voltage, V NO -- mv Ripple voltage, VCCR -- Vrms VNO -- VCC Rg = kω Rg = VG = 1dB RL = 8Ω BPF = Hz to khz Separation, sep -- db Supply voltage, VCC -- V SEP -- f CH CH1 CH1 CH VCC = 6.4V RL = 8Ω Rg = kω VO = dbm Output noise voltage, V NO -- mv Supply voltage, V CC -- V VNO -- Rg V CC = 6.4V BPF = Hz to khz/--db VG = 1dB Power dissipation, Pd -- W -8 1k k k RL = 8Ω (dual) Frequency, f -- Hz Pd -- PO V V 6.4V 1k k k Signal Source Resistance, Rg -- Ω.1 1. No.49-/8

8 LA44 Power dissipation, Pd -- W 18 Pd -- PO.1 1. VN -- Ta V R L = 4Ω (dual) V 6.4V Rg = V CC = 6.4V THD = % Rg = 6Ω PO -- Ta R L = 4Ω 8Ω Ambient temperature, Ta -- C Output pin voltage, V N -- V V 11V Ambient temperature, Ta -- C ORDERING INFORMATION LA44-E LA44F-E LA44L-E Device Package Shipping (Qty / Packing) SIP14 6.8x1.8 / SIP14H (Pb-Free) 1 / Fan-Fold SIP14 6.8x1.8 / SIP14H (Pb-Free) SIP14 6.8x1.8 / SIP14H (Pb-Free) 14 / Fan-Fold 1 / Fan-Fold ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC s product/patent coverage may be accessed at SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. Typical parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PS No.49-8/8