Rev.1.0, Sep.19.2003, page 1 of 13

M61556FP

100 W 1-Channel Amplifier Predriver

REJ03F0089-0100Z

Rev.1.0

Sep.19.2003

Description

The M61556FP is a predriver IC developed for use as the output driver of a digital audio power amplifier. It can be

combined with an N-channel MOSFET to create a 100 W, 1-channel (8

Ω load) digital amplifier. (The 200 W version,

the M61557FP, is pin compatible with the M61556FP.)

Features

• On-chip dead time adjustment circuit: Supports easy adjustment by connecting a single resistor. (H-L dead time can

be fine adjusted independently for sides A and B.)

• Suitable for driving full-bridge N-channel MOSFET devices.

• Maximum bootstrap supply voltage: 88 V (peak value)

• Supports high-speed switching.

• On-chip diode for bootstrap circuit.

• On-chip VDD low voltage detector circuit.

• On-chip clock loss detector circuit.

• Output impedance: 2.5 Ω

• Input is TTL level, allowing connecting to 3.3 V or 5 V processors.