LV4991TT Datasheet (Sanyo Semicon Device) - Monaural BTL Power Amplifier

LV4991TT, Monaural BTL Power Amplifier

Pin voltage Pin No.

1 IN Symbol VCC = 3.6V 1.81 Input pin Description Equivalent circuit VCC 1 + 3kΩ 2 STBY Standby pin *Standby mode at 0 to 0.3V *Operation mode at 1.9 to VCC VCC 2 21kΩ 121.4kΩ 40.7kΩ GND 3 VREF 1.81 Ripple filter pin (For connection of capacitor for

www.DataSheet.co.kr Ordering number : ENA0739D Bi-CMOS IC LV4991TT Overview For Portable Audio Equipment Monaural BTL Power Amplifier LV4991TT 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 IC recorders, portable radios, etc.

The LV4991TT is a MSOP8 (150mil) package, and The LV4991TH of HMSOP8 (150m

LV4991TT Features

* as above described. 3. Pin 4 control (second amplifier stop control function) Pin 4 is a pin to turn ON/OFF the operation of second amplifier. By using this function, the pop sound at startup can be reduced. Note that pin 4 can be controlled by applying the voltage described below : Second amplifier