FAN5069

PWM and ULDO Controller Combo

General DescriptionGeneral Description

The FAN5069 combines a high efficiency Pulse-Width-Modulated PWM controller and a LDO (Low DropOut) linear regulator controller. Synchronous rectification provides high efficiency over a wide range of load currents. Efficiency is further enhanced by using the low-side MOSFET's RDS(ON) to sense current.

Both the linear and PWM regulator soft-start are controlled by a single external capacitor, to limit in-rush current from the supply when the regulators are first enabled. Current limit for PWM is also programmable.

The PWM regulator employs a Summing-Current-Mode control with external compensation to achieve fast load transient response and provide system design optimization.

FAN5069 is offered in both industrial temperature grade (-40°C to +85°C) as well as commercial temperature grade (-10°C to +85°C).

Product Status/Pricing/PackagingProduct Status/Pricing/Packaging

ProductProduct statusEco StatusPricing*Package typeLeadsPacking methodPackage DrawingPackage Marking Convention**
FAN5069EMTCXFull ProductionRoHS Compliant$0.64TSSOP16TAPE REEL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: 5069E Line 3: C1
FAN5069MTCXFull ProductionRoHS Compliant$0.64TSSOP16TAPE REEL PDFLine 1: $Y (Fairchild logo)
&Z (Asm. Plant Code)
&2 (2-Digit Date Code)
&K Line 2: 5069 Line 3: C1

FeaturesFeatures


  • General Purpose PWM Regulator and LDO Controller
  • Input Voltage Range: 3V to 24V
  • Output Voltage Range: 0.8V to 15V

    - VCC

    - 5V

  • Shunt Regulator for 12V Operation
  • Support for Ceramic Cap on PWM Output
  • Programmable Current Limit for PWM Output
  • Programmable Switching Frequency (200KHz to 600KHz)
  • RDS(ON) Current Sensing
  • Internal Synchronous Boot Diode
  • Soft-Start for both PWM and LDO
  • Multi-Fault protection with Optional Auto-restart
  • 16-pin TSSOP Package

Related ProductsApplications/Block Diagram(s)

  • PC/Server Motherboard Peripherals

    - VCC_MCH (1.5V), VDDQ (1.5V) and VTT_GTL (1.25V)

  • Power Supply for

    - FPGA, DSP, Embedded Controllers, Graphic Card Processor, and Communication Processors

  • Industrial Power Supplies
  • High-Power DC-to-DC Converters
 

Application NotesApplication Notes

 
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