lv4991th Sanyo Semiconductor Corporation, lv4991th Datasheet
lv4991th
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lv4991th Summary of contents
Page 1
... LV4991TH incorporates the power amplifier circuit operable at low voltage (2.7V or more) and has additionally the standby function to reduce the current drain. This is the best LSI for speaker drive for the battery-driven portable equipment, such as portable DVD player, Notebook PC, etc. The LV4991TH is a HMSOP8 (150mil) package, and The LV4991TT of MSOP8 (150mil) package is available. ...
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... Reference (pin 1) voltage VREF Pin 3 control HIGH voltage VSTBH Pin 3 control LOW voltage VSTBL Pin 2 control HIGH voltage VCNTH Pin 2 control LOW voltage VCNTL LV4991TH Conditions Substrate mounted* Conditions Conditions No signal ∞ No signal ∞ LOW THD = 10% THD = 10 -30dBV -30dBV Rg = 620Ω ...
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... SANYO : HMSOP8(150mil) Recommended substrate Size : 60mm×60mm×1.6mm Top Layer LV4991TH 1400 Specified circuit board : 60×60×1.6mm 1300 1200 Specified substrate (Both sides) 1100 1000 900 800 700 600 500 400 300 Independent IC ...
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... Block Diagram and Sample Application Circuit C4 1µF 1 from CPU 2 CNT R4 10kΩ from CPU 3 STBY R3 10kΩ Test Circuit 10kΩ V CNT 10kΩ V STBH V STBL LV4991TH VREF V CC AMP1 CONTROL BIAS AMP2 OUT2 + - GND SPEAKER 1µF 1 VREF CNT 3 STBY OUT1 4 ...
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... OUT2 1.81 6 OUT1 5 GND Voltage impression (3.6) LV4991TH Description Input pin Standby pin •Standby mode 0.3V •Operation mode at 1.9 to VCC Ripple filter pin (For connection of capacitor for filter) Second amplifier stop control pin •Second amplifier stopped 0.3V Power amplifier output pin ...
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... When using the standby pin as interlocked with power supply as shown in Fig. 2, care should be taken because the current I STBY as expressed by the following equation flows through the standby pin −1.4V I STBY = R3+21kΩ LV4991TH Pin 3:STBY Pin 2:CNT 0.33 Between pins 6 and 4: ≥ 280 ...
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... When IC is used near the maximum rating, there is a possibility that the maximum rating may be exceeded even under the smallest change of conditions, resulting in failure. Take the sufficient margin for variation of supply voltage and use IC within a range where the maximum rating will never be exceeded. LV4991TH No.A0743-7/11 ...
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... Supply voltage 700 8Ω 6dB 5.0V fin = 1kHz 600 500 400 3.6V 300 3.0V 200 100 100 Output power LV4991TH 100 16Ω 6dB 5 fin = 1kHz 3 200<BW<80kHz 0 ...
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... Supply voltage 140 120 100 3. 620Ω 8Ω 6dB 20Hz<BW<20kHz 0 2.5 3 3.5 4 4.5 Supply voltage LV4991TH THD = 10 3.8 3.6 3.4 3.2 3 2.8 2 6dB 2 8Ω ...
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... Temperature ° 800 32Ω 6dB 700 THD = 10% fin = 1kHz 200Hz<BW<80kHz 600 500 400 300 200 100 0 - Temperature °C LV4991TH 160 140 120 100 3. 6dB ∞ 0 100 -50 1200 1100 1000 900 800 700 ...
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... SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of August, 2007. Specifications and information herein are subject to change without notice. LV4991TH 2. Fall 3pin : 5V/div, DC PWR→STBY 1pin : 200mV/div, DC ...