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ISL6549CA Datasheet(PDF) 1 Page - Intersil Corporation |
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ISL6549CA Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 18 page 1 ® ISL6549 Single 12V Input Supply Dual Regulator — Synchronous Rectified Buck PWM and Linear Power Controller 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 synchronous rectified buck converter incorporates simple, single feedback loop, voltage-mode control with fast transient response. Both the switching regulator and linear regulator provide a maximum static regulation tolerance of ± 1% over line, load, and temperature ranges. Each output is user-adjustable by means of external resistors. An integrated soft-start 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. Related Literature • Technical Brief TB363 Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) 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) Applications • Processor and memory supplies • ASIC power supplies • Embedded processor and I/O supplies • DSP supplies Ordering Information PART NUMBER PART MARKING TEMP. RANGE (°C) PACKAGE PKG. DWG. # ISL6549CB ISL6549CB 0 to 70 14 Ld SOIC M14.15 ISL6549CBZ (Note) 6549CBZ 0 to 70 14 Ld SOIC (Pb-free) M14.15 ISL6549CR ISL6549CR 0 to 70 16 Ld 4x4 QFN L16.4x4 ISL6549CRZ (Note) 6549CRZ 0 to 70 16 Ld 4x4 QFN (Pb-free) L16.4x4 ISL6549CA ISL6549CA 0 to 70 16 Ld QSOP M16.15A ISL6549CAZ (Note) 6549CAZ 0 to 70 16 Ld QSOP (Pb-free) M16.15A ISL6549CAZA (Note) 6549CAZ 0 to 70 16 Ld QSOP (Pb-free) M16.15A ISL6549IBZ (Note) 6549IBZ -40 to 85 14 Ld SOIC (Pb-free) M14.15 ISL6549IRZ (Note) 6549IRZ -40 to 85 16 Ld 4x4 QFN (Pb-free) L16.4x4 ISL6549IAZ (Note) 6549IAZ -40 to 85 16 Ld QSOP (Pb-free) M16.15A ISL6549LOW-EVAL1 Evaluation Board 1-5A ISL6549HI-EVAL1 Evaluation Board up to 20A Add “-T” suffix for tape and reel. NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets, molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb 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. Data Sheet September 22, 2006 FN9168.2 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2004, 2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners. |
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