49CAZ Datasheet | Intersil

feature brings both supplies into regulation in a controlled manner. Each output is monitored via the FB pins for undervoltage events. If either output drops below 75% of the nominal output level, both converters are shut off and go into retry mode. The ISL6549 is available in a 14 Ld SOIC package, 16 Ld QSOP, or 16 Ld 4x4 QFN packages. 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 150k Hz to 1MHz - Small external ponent 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 (Ro HS pliant) Applications - Processor and memory supplies - ASIC power supplies - Embedded processor and I/O supplies - DSP supplies Related Literature - Technical Brief TB363 Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) Ordering Information PART NUMBER ISL6549CB ISL6549CBZ (Note) ISL6549CR ISL6549CRZ (Note) ISL6549CA ISL6549CAZ (Note) ISL6549CAZA (Note) ISL6549IBZ (Note) ISL6549IRZ (Note) ISL6549IAZ (Note) ISL6549LOW-EVAL1 ISL6549HI-EVAL1 Add “-T” suffix for tape and reel. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets, molding pounds/die attach materials and 100% matte tin plate termination finish, which are Ro HS pliant and patible with both Sn Pb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. PART MARKING ISL6549CB 6549CBZ ISL6549CR 6549CRZ ISL6549CA 6549CAZ...