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Ordering number: EN 2148C
Thick Film Hybrid IC
STK4065 Car Stereo Use Power Amplifier (25W min, THD = 10%)
Applications
· Power amplifier for car stereos · Home karaoke systems
Package Dimensions
unit: mm
4081
[STK4065]
Features
· High output power Maximum output power 40W or greater (RL = 2) 35W typ. (RL = 2, THD = 10%) 23W typ. (RL = 4, THD = 10%) · Low distortion · Built-in protectors · DC short protector · Thermal shutdown protector (Thermal protector) · Overvoltage protector (Overvoltage / power supply surge protector) · Audio muting circuit (Fast attack time) · Free from failure caused by load short · Wide operating supply voltage range
Specifications
Maximum Ratings at Ta = 25°C
Parameter Supply voltage VCC max(2) Allowable power dissipation Peak output power Output current Junction temperature Thermal resistance Operating temperature Storage temperature Available time for load shorted Pd max Po max IO Tj j-c Topr Tstg ts VCC = ±13.2V, RL = 2, f = 50Hz, PO = 25W Symbol VCC max(1) Conditions Quiescent (circuit cutoff mode) 30s Operating (f = 100Hz, VIN = 1Vrms, t = 100ms) Infinite heat sink VCC = 16V, RL = 2, f = 1kHz Ratings 30 18 100 65 12 150 1.25 30 to +85 -40 to +125 2* Unit V V W W A °C °C/W °C °C s
Recommended Operating Conditions at Ta = 25°C
Parameter Recommended supply voltage Load resistance Symbol VCC RL Conditions Ratings 13.2 2 Unit V
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
61197HA (ID) / 80394TH (KOTO) / 1287KI / 4155KI, TS 5-2124 No. 2148--1/9
STK4065
Operating Characteristics at Ta = 25°C, RL = 2, Rg = 600, VG = 46dB, VCC = 13.2V
Parameter Quiescent current Symbol ICCO PO(1) Output power PO(2) PO(3) THD(1) Total harmonic distortion THD(2) Voltage gain Frequency response Input impedance Output noise voltage Output offset voltage Muting suppression level Ripple rejection VG fL, fH ri VNO VN ATT SVRR Conditions Rg = 10k THD = 10%, f = 1kHz THD = 1%, f = 1kHz THD = 10%, RL = 4, f = 1kHz PO = 10W, f = 1kHz PO = 1W, f = 20Hz to 20kHz PO = 1W, f = 1kHz PO = 1W,
+0 -3 dB
min 25 20 43.8 20 -200
typ 70 35 25 23 0.06 46.0 10 to 30k 30 0.6 0 47
max 140 0.1 0.3 48.2 1.2 +200
Unit mA W W W % % dB Hz k mVrms mV dB dB
PO = 1W, f = 1kHz Rg = 10k, without BPF Rg = 10k VM = +5V fR = 100Hz, Rg = 0, VR = 0dBm
* It is guaranteed that load short causes no damage for 2 seconds. In actual applications, the thermal shutdown protector provides sufficient guarantee against load short. However, refer to "Notes for Applying the STK4065", because the saturation current varies with the thermal resistance of the heat sink.
Equivalent Circuit Block Diagram
No. 2148--2/9
STK4065
Test Circuit
Notes for Applying the STK4065
(1) VCC max The STK4065 is designed as an amplifier for car use and its VCC max at the operating mode is set to 18V. When this voltage is exceeded, the overvoltage protector will work to bring the circuit to OFF-state, delivering no output. The overvoltage protector is so designed as to work at a voltage of 18V to 28V. The protector works 100% at 28V. When designing an audio set, such as home stereo, using a transformer power supply, consider AC line regulation and be careful that 18V must not be exceeded at the quiescent mode. If 18V is exceeded, the overvoltage protector will work, generating an abnormal sound. (2) Protectors a) Output pin-to-VCC short, output pin-to-GND short protectors The STK4065 contains protectors against output pinto-VCC short and output pin-to-GND short. The output pin-to-VCC short protector works effectively to protect the IC when the power switch is turned ON at the output pin-to-VCC short state, but does not work to protect the IC when output pin-to-VCC short is forced to be provided at the normal operation mode after the power switch is turned ON. The output pin-to-VCC short protector is intended to protect the IC against damage when pin-to-pin short occurs in the assembly process. If there is possibility that output pin-to-VCC short is caused by the user, the auxiliary output pin-to-VCC short protector shown on page 5 must be connected externally. The output pin-to-GND short protector works effectively to protect the IC against damage when the power switch is turned ON at the output Pinto-GND short state and also when output pin-to-GND short is forced to be provided at the normal operation mode after the power switch in turned ON. b) Thermal shutdown The STK4065 contains thermal protectors. The thermal protector detects abnormal temperature rise caused when the IC operates abnormally (load short, etc.), limits the input signal, and prevents temperature from rising, preventing the IC from breaking down in a short time. The thermal protector starts working at approximately 135°C of substrate temperature Tc and turns OFF the input signal at approximately 175°C.
No. 2148--3/9
STK4065
In normal applications, since a heat sink is mounted on the IC, the substrate temperature does not rise up to a temperature at which the input signal is turned OFF completely, but is saturated at a certain temperature. When load short occurs with a heat sink of 4.5°C/W mounted, the substrate temperature is saturated at approximately 160°C. Tj in this state is as high as 170°C, which obviously exceeds the maximum rating. As mentioned above, the thermal protector is designed to prevent the IC from breaking down in a short time when abnormal temperature rise occurs, but is not intended to protect the IC from damage for a long time when abnormal temperature rise occurs. (3) Others a) Excessive input When an excessive input of 1.5 Vrms (f = 1kHz) or greater is applied to the input pin, the input channel DC balance of the input monolithic amplifier is disturbed, the output is cut off, and DC voltage is developed on the output pins, damaging the speaker. Be careful not to permit an input of 1.5Vrms (f = 1kHz) or greater to be applied.
b) Parasitic oscillation The STK4065 has 2.2, 0.47µF across the VCC line and the bootstrap pins for phase compensation. This makes it necessary for the power line to be extended close to the bootstrap pins for both the inverting amplifier and the non-inverting amplifier. Too long a power line may cause parasitic oscillation to occur at low temperatures. If so, connect a capacitor of approximately 0.1µF across the tip of the power line and GND to decrease AC impedance of the power line. c) Inverse application of supply voltage The STK4065 contains no protector against inverse application of supply voltage. If there is a possibility that inverse application of supply voltage may occur, connect the protector externally. d) Power switch-OFF mode Do not connect pin 1 direct to GND, otherwise the IC may be broken down. When connecting pin 1 to GND, connect a resistor of 100 or greater in series with pin 1 or connect a diode across pin 10 and pin 1.
No. 2148--4/9
STK4065
Sample Application Circuit of STK4065 Output Pin-to-VCC Short Protector
Sample Application of STK4065 VG = 40dB
No. 2148--5/9
Output power, Po - W
Residual resistance, Rr - Load short current, ICCS - A
Time, t - min
Supply voltage, VCC - V
Input voltage, Vi - mV Substrate temperature, Tc - °C Residual resistance, Rr - Load short current, ICCS - A Time, t - min Supply voltage, VCC - V Substrate temperature, Tc - °C
STK4065
Total harmonic distortion, THD - %
Output power, Po - W
No. 2148--6/9
Output power, Po - W
Total harmonic distortion, THD - %
Total harmonic distortion, THD - %
Output power, Po - W
Frequency, f - Hz Frequency, f - Hz Output power, Po - W Frequency, f - Hz Frequency, f - Hz
STK4065
Response - dB
Total harmonic distortion, THD - %
Frequency, f - Hz
No. 2148--7/9
STK4065
Frequency, f - Hz
Current drain, ICC - mA
Response - dB
Output power, Po - W
Substrate temperature, Tc - °C
Output offset voltage, VN - mV
Quiescent current, ICCO - mA
Substrate temperature, Tc - °C
Supply voltage, VCC - V
Output offset voltage, VN - mV
Quiescent current, ICCO - mA
Supply voltage, VCC - V
No. 2148--8/9
STK4065
Allowable power dissipation, Pd max - W
Output power, Po - W
Output power, Po - W
Supply voltage, VCC - V
IC power dissipation, Pdmax - W
Output power, Po - W
Supply voltage, VCC - V
Ambient temperature, Ta - °C
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No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees, jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
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This catalog provides information as of June, 1997. Specifications and information herein are subject to change without notice.
No. 2148--9/9