Overview

LV4993M built-in the power amplifier circuit operable at low voltage (1.8V or more) and has additionally the standby function to reduce the current drain. It is power amplifier IC optimal for speaker drive used in battery-driven portable equipment and the low output power system equipment.

Function and Feature

• Monaural BTL power amplifier built-in

Standard output power 1 = 1.5W (VCC = 5V, RL = 8Ω, THD = 10)

Standard output power 2 = 0.5W (VCC = 3V, RL = 8Ω, THD = 10)

Output coupling capacitor not necessary because of differential output type

• Operation at low voltage possible (Operate with two dry battery cells)

VCC = 1.8V or more

• Standby function built-in

Standard current drain at standby = 0.02μA (VCC = 5V)

• Second amplifier stop control function built-in: For BTL/SE mode switching, and signal muting at BTL mode.

• Overheat protection circuit built-in

• Gain setting possible

BTL voltage gain = 0 to 26dB

• Output phase compensation capacitor not necessary

Application

IC recorder, Portable-TV, Radio, Portable-NAVI, LCD-monitor, Digital-photo-frame, and etc.