FAN5026MTCX DC-DC Power Conversion by ON Semiconductor

PWM Controller, Dual-Output/DDR

Semiconductors - ICs
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Status: Active
Series: FAN5026
RoHS: Compliant
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The FAN5026 PWM controller provides high efficiency and regulation for two output voltages adjustable in the range from 0.9v to 5.5V that are required to power I/O, chip-sets, and memory banks in high-performance computers, set-top boxes, and VGA cards. Synchronous rectification contributes to high efficiency over a wide range of loads. Efficiency is even further enhanced by using MOSFET RDS(ON) as a current-sense component. Feedforward ramp modulation, average-current mode control scheme, and internal feedback compensation provide fast response to load transients. Out-of-phase operation with 180° phase shift reduces input current ripple. The controller can be transformed into a complete DDR memory power supply solution by activating a designated pin. In DDR Mode, one of the channels tracks the output voltage of another channel and provides output current sink and source capability — essential for proper powering of DDR chips. The buffered reference voltage required by this type of memory is also provided. The FAN5026 monitors these outputs and generates separate PGx (power good) signals when the soft-start is completed and the output is within ±10% of its set point. Over-voltage protection prevents the output voltage from exceeding 120% of the set point. Normal operation is automatically restored when the over-voltage conditions cease. Under-voltage protection latches the chip off when either output drops below 75% of its set value after the soft-start sequence for this output is completed. An adjustable over-current function monitors the output current by sensing the voltage drop across the lower MOSFET. If precision current-sensing is required, an external current-sense resistor may be used.

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Features

Highly Flexible, Dual Synchronous Switching PWM Controller that Includes Modes for:
DDR Mode with In-phase Operation for Reduced Channel Interference
90° Phase-shifted, Two-stage DDR Mode for Reduced Input Ripple
Dual Independent Regulators, 180° Phase Shifted
Complete DDR Memory Power Solution
VTT Tracks VDDQ/2
VDDQ/2 Buffered Reference Output
Lossless Current Sensing on Low-Side MOSFET or Precision Over-Current Using Sense Resistor
VCC Under-Voltage Lockout
Wide Input Range: 3V to 16V
Excellent Dynamic Response with Voltage Feedforward and Average Current-Mode Control
Power-Good Signal
Supports DDR-II and HSTL
28-Lead Thin-Shrink Small-Outline Package
Applications
TBA

Specifications

Description FAN5026
Compliance Pb-free
Topology Step-Down
Package Type TSSOP-28

Last 6 months Inventory & Pricing History

Alternative Descriptions

PWM CONTROLLER, SMD, 5026, TSSOP28 | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a FAN5026MTCX?

Additional datasheets, footprints and schematics for FAN5026MTCX are listed on our Part Details page. You can also find images and similar parts to FAN5026MTCX on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for FAN5026MTCX on our Product Comparison page. Access via the 'View Pricing & Stock' button to view FAN5026MTCX price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does FAN5026MTCX fall under?

The FAN5026MTCX is listed under Power Management > DC-DC Power Conversion > Controllers.

Can I view similar or alternative parts?

You can view similar parts to FAN5026MTCX when available in the Controllers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the FAN5026MTCX you can contact the distributor directly for product support, shipping queries etc.

Is the FAN5026MTCX RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

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Authorised distributors including element14 and Farnell have stock available or on a lead time for FAN5026MTCX.

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