lv49821vh Sanyo Semiconductor Corporation, lv49821vh Datasheet
lv49821vh
Related parts for lv49821vh
lv49821vh Summary of contents
Page 1
... LV49821VH Overview The LV49821VH incorporates a 2-channel power circuit amplifier capable of low-voltage operation (2.7V and up). It has a function for switching the headphone driver and also has a standby function to reduce the current drain power amplifier IC optimal for driving the speakers used in portable equipment and low power output equipment. ...
Page 2
... Low level control voltage (pin 6) V 2CNT H Package Dimensions unit : mm (typ) 3377 5.2 1.5 1 0.65 0.22 0.15 (0.33) SANYO : HSSOP13(225mil) LV49821VH Conditions 8Ω or more 4Ω or 6Ω Conditions ∞ No signal ∞ No signal ,V6 = High (2nd amplifier stop) ∞ No signal ,V2 = Low (Standby mode) THD = 10% Vin = -25dBV Vin = -25dBV Vin = -25dBV Rg = 620Ω ...
Page 3
... V CC BIAS control 1 2 IN1 STBY Test Circuit 8Ω 100kΩ 22kΩ 0.1µF STBY 0.35V 620Ω Vin1 LV49821VH PWR-GND Rariator Fin TSD 2nd-amp control BEEP VREF PRE-GND A2CNT V CC GND 2.2µF 0.1µF 12 Rariator Fin 11 PWR-GND V CC ...
Page 4
... Evaluation Board Circuit OUT1-1 OUT1-2 SE1 100µ 100kΩ 22kΩ PWR 0.1µF from V CC IN1 Evaluation Board Layout Top layer LV49821VH V CC GND 2.2µF 0.1µF 12 Rariator Fin 11 PWR-GND V CC PRE-GND use no use SE 22nF 1µF from V CC ...
Page 5
... C1 0.1µF Vin1 from CPU Application Circuit Example 2 (Only BTL function use) Speaker 100kΩ 22kΩ C1 0.1µF Vin1 from CPU LV49821VH 2.2µF R11 C8 100kΩ 0.1µF 12 Rariator Fin 11 PWR-GND V CC PRE-GND ...
Page 6
... BTL 1st output pin (1ch). 10 OUT2-2 2.5V BTL 2nd output pin (2ch). 12 OUT1-2 2.5V BTL 2nd output pin (1ch External apply Power supply pin. FIN PWR-GND 0V Power system ground pin, Radiation fin. LV49821VH Function VREF2 GND V CC GND Equivalent circuit ...
Page 7
... When using a stabilized power supply, these capacitors can also be combined into a single 2.2µF ceramic capacitor. Note that when the power supply line is relatively unstable, the power supply capacitor C7 capacitance value must be increased. LV49821VH LV49821VH other OUT ...
Page 8
... IC. When the chip becomes abnormally hot, immediately turn off the power and determine the cause. LV49821VH - − 0.7) / (R5 + 30000) CPU A2CNT V SS LV49821VH Figure STBY R5 Fig.2 CPU V CC RC1 RC2 6 A2CNT RC3 V SS LV49821VH Figure 5 No.A1468-8/15 ...
Page 9
... In addition, the package of this IC has low thermal radiation characteristics, so secure sufficient thermal radiation by providing a copper foil land on the printed circuit board near the heat sink. When and load = 8Ω, a ground line copper foil area of approximately 50mm × 50mm is recommended. LV49821VH No.A1468-9/15 ...
Page 10
... Supply voltage 19.1dB 5 fin = 1kHz 0 Load resistance Ω LV49821VH 100 3. 19.1dB fin = 1kHz 0 0. ...
Page 11
... Supply voltage MUTE -- Vin - 8Ω fin = 1kHz - 19.1dB -100 -110 STBY (V2 = 0.3V) -120 -130 -40 -30 -20 Input voltage, Vin -- dBV LV49821VH 2 19.1dB fin = 1kHz 1.5 1.0 0 0. 4Ω 19.1dB fin = 1kHz 1.5 1.0 0 ...
Page 12
... I CCO -- load Supply voltage CCO -- load 0.5 1.0 1.5 2.0 2pin voltage LV49821VH 8Ω 620Ω 19.1dB Vr = −20dBV 10k 100k 0 0.05 No load V2 = 0.3V 0.04 0.03 0.02 ...
Page 13
... MUTE -- Ta - 8Ω fin = 1kHz - 19.1dB V2 = 0.3V Stabdby mode -100 -110 -120 -130 -40 - Ambient temperature °C LV49821VH 10 No load 8Ω 19.1dB fin = 1kHz Vin = -25dB 20 ...
Page 14
... Ambient temperature °C Standby ⇒ Power ON BTL OUT: 50mV/div, AC 4pin voltage: 2V/div 2pin voltage: 2V/div 6pin: High ⇒ Low BTL OUT: 50mV/div, AC 4pin voltage: 2V/div 6pin voltage: 5V/div LV49821VH 0 0. 0.001 ...
Page 15
... 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 May, 2009. Specifications and information herein are subject to change without notice. LV49821VH PS No.A1468-15/15 ...