lv4991m Sanyo Semiconductor Corporation, lv4991m Datasheet
lv4991m
Available stocks
Related parts for lv4991m
lv4991m Summary of contents
Page 1
... LV4991M Overview LV4991M 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 IC for speaker drive for the audio of low-power range system and home appliance. There are The LV4991TT: MSOP8 (150mil) and The LV4991TH: HMSOP8 (150mil) in the package change goods ...
Page 2
... VREF Pin 2 control HIGH voltage V STB H Pin 2 control LOW voltage V STB L Pin 4 control HIGH voltage V CNT H Pin 4 control LOW voltage V CNT L LV4991M Conditions Mounted on a specified board.* Conditions Conditions No signal ∞ No signal ∞ LOW THD = 10% THD = 10 -30dBV -30dBV Rg = 620Ω ...
Page 3
... Package Dimensions unit : mm (typ) 3032D 5 (0.65) 1.27 0.15 0.35 SANYO : MFP8(225mil) Recommended Board Both sided board Size : 40mm×50mm×1.6mm Top Layer LV4991M 1200 Specified board 1000 (Both side) 900 800 600 400 Independent IC 300 0 -40 -20 0 Ambient temperature °C Bottom Layer ...
Page 4
... Test Circuit 0.33µF 22kΩ 620Ω V STBY 1µF LV4991M R2 22kΩ - AMP1 + V CC BIAS TSD - CONTROL + AMP2 22kΩ 1 10kΩ 2 LV4991M 3 4 10kΩ 0.1µF 2.2µF OUT1 GND GND 6 OUT2 0.1µF 2.2µF ...
Page 5
... CNT 5 OUT2 1.81 8 OUT1 6 GND LV4991M 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 Ground pin ...
Page 6
... 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 LV4991M Pin 2:STBY Pin 4:CNT 0.33 Between pins 8 and 5: ≥ 280 ...
Page 7
... 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. LV4991M No.A1492-7/11 ...
Page 8
... Supply voltage 700 8Ω 6dB 5.0V fin = 1kHz 600 500 400 300 200 100 100 Output power LV4991M 100 16Ω 6dB 5 fin = 1kHz 3 200<BW<80kHz 0 ...
Page 9
... Supply voltage 140 120 100 3. 620Ω 8Ω 6dB 20Hz<BW<20kHz 0 2.5 3 3.5 4 4.5 Supply voltage LV4991M THD = 10 3.8 3.6 3.4 3.2 3 2.8 2 6dB 2 8Ω ...
Page 10
... Temperature ° 800 700 600 500 400 300 200 100 0 ñ Temperature °C LV4991M 160 140 120 100 3. 6dB ∞ 0 ñ 100 1200 8Ω 6dB 1100 THD = 10% ...
Page 11
... 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 June, 2009. Specifications and information herein are subject to change without notice. LV4991M 2. Fall 2pin : 5V/div, DC PWR→STBY 3pin : 200mV/div, DC ...