FAN5236MTCX DC-DC Power Conversion by ON Semiconductor

PWM/PFM Controller, Wide Input Voltage, Dual-Output/DDR

Semiconductors - ICs
> More Semiconductors - ICs
Status: Active
Series: FAN5236
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The FAN5236 PWM controller provides high efficiency and regulation for two output voltages adjustable in the range of 0.9V to 5.5V required to power I/O, chip-sets, and memory banks in high-performance notebook computers, PDAs, and Internet appliances. Synchronous rectification and hysteretic operation at light loads contribute to high efficiency over a wide range of loads. The Hysteretic Mode can be disabled separately on each PWM converter if PWM Mode is desired for all load levels. Efficiency is 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-degree 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 FAN5236 monitors these outputs and generates separate PGx (power good) signals when the soft-start is completed and the output is within ±10% of the set point. Built-in over-voltage protection prevents the output voltage from going above 120% of the set point. Normal operation is automatically restored when the over-voltage conditions cease. Under-voltage protection latches the chip off when output drops below 75% of the 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.

Where to Buy

Prices starting from US$1.77

Distributor Stock
Logo for Rochester Electronics
Rochester Electronics
from US$1.77
64,045
in stock
 Buy Now
Buy Now

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 and HSTL
Light-load Hysteretic Mode Maximizes Efficiency
Lossless Current Sensing on Low-side MOSFET or Precision Over-Current Using Sense Resistor
VCC Under-Voltage Lockout
Converters can Operate from +5V or 3.3V or Battery Power Input (5V to 24V)
Excellent Dynamic Response with Voltage Feedforward and Average-Current-Mode Control
Power-Good Signal
Supports DDR-II and HSTL
Applications
TBA

Specifications

Description FAN5236
Compliance Pb-free
Topology Step-Down
Package Type TSSOP-28

Last 6 months Inventory & Pricing History

Frequently Asked Questions

Where can I find additional details, specifications and documents for a FAN5236MTCX?

Additional datasheets, footprints and schematics for FAN5236MTCX are listed on our Part Details page. You can also find images and similar parts to FAN5236MTCX on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for FAN5236MTCX on our Product Comparison page. Access via the 'View Pricing & Stock' button to view FAN5236MTCX price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does FAN5236MTCX fall under?

The FAN5236MTCX is listed under Power Management > DC-DC Power Conversion > Controllers.

Can I view similar or alternative parts?

You can view similar parts to FAN5236MTCX 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 FAN5236MTCX you can contact the distributor directly for product support, shipping queries etc.

Is the FAN5236MTCX RoHS compliant?

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

Which authorised distributors for FAN5236MTCX have stock available?

Authorised distributors including Rochester Electronics have stock available or on a lead time for FAN5236MTCX.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for FAN5236MTCX often in real-time on the comparison pages.

What if I can't find stock of FAN5236MTCX?

You can fill out our help required form which you can use to request a quote for FAN5236MTCX from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.