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Description

The L5955 is an integration of three high side drivers, six regulators and two stand-by regulators with RESET function developed to provide the power to a complete audio system.

The outputs of the IC are controlled by I2C bus and Enable pin.

The device is equipped with sequencing and slew rate controls for the st-by regulators.

Features

■ 2 stand-by regulators:

3.3V (125mA)

1.5V (300mA)

■ 6 regulators:

10V (40mA)

8.5V (200mA)

3.3V (850mA)

8/10V (1A)

5/3.3/1.8V (200mA)

1.8/2.5V(200mA)

■ All regulators are low dropout outputs

■ The different outputs voltage are controlled by I2C Bus.

■ Reg3 on/off controlled by enable

■ Reg1, Reg2, Reg4, Reg5, Reg6 on/off controlled by I2CBus.

■ 3 high side drivers:

2A (HSD1)

0.45A (HSD2 & HSD3)

■ No external charge pump capacitors are required

■ Stand-by mode controlled by EN pin for I2C

Bus and Reg1, Reg2, Reg3, Reg4, Reg5,

Reg6, HSD1, HSD2, HSD3

■ LVW function externally selectable

■ Individual thermal shutdown

■ Independent current limiting

■ Short circuit protection

■ Load dump protection and overvoltage shutdown