ISL6549 ISL6549CBZ Switching Voltage Regulator IC

Details

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FEATURES

• Single 12V bias supply (no 5V supply is required)

• Provides two regulated voltages

- One synchronous rectified buck PWM controller

- One linear controller

• Both controllers drive low cost N-Channel MOSFETs

• Small converter size

- Adjustable frequency 150kHz to 1MHz

- Small external component count

• Excellent output voltage regulation

- Both outputs: ±1% over temperature

• 12V down conversion

• PWM and linear output voltage range: down to 0.8V

• Simple single-loop voltage-mode PWM control design

• Fast PWM converter transient response

- High-bandwidth error amplifier

• Undervoltage fault monitoring on both outputs

• Pb-free plus anneal available (RoHS compliant)

The ISL6549 provides the power control and protection for two output voltages in high-performance applications. The dual-output controller drives two N-Channel MOSFETs in a synchronous rectified buck converter topology and one N-Channel MOSFET in a linear configuration. The controller is ideal for applications where regulation of both the processing unit and memory supplies is required.

The ISL6549 is available in a 14 Ld SOIC package,16 Ld QSOP, or 16 Ld 4x4 QFN packages.