LT1249CS8#PBF Offline Power Factor Correction (PFC) Controllers by Analog Devices

Status: Production
Series: LT1249
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

The 8-pin LT1249 provides active power factor correction for universal offline power systems with very few external parts. By using fixed high frequency PWM current averaging without the need for slope compensation, the LT1249 achieves far lower line current distortion, with a smaller magnetic element than systems that use either peak current detection or zero current switching approach, in both continuous and discontinuous modes of operation.The LT1249 uses a multiplier containing a square gain function from the voltage amplifier to reduce the AC gain at light output load and thus maintains low line current distortion and high system stability. The LT1249 also provides filtering capability to reject line switching noise which can cause instability when fed into the multiplier. Line current dead zone is minimized with low bias voltage at the current input to the multiplier.The LT1249 provides many protection features including peak current limiting and overvoltage protection. The switching frequency is internally set at 100kHz.While the LT1249 simplifies PFC design with minimal parts count, the LT1248 provides flexibilities in switching frequency, overvoltage and current limit.

Where to Buy

Prices starting from US$8.02

Distributor Stock
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Newark Electronics
from US$8.51
98
in stock
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Logo for element14 Singapore
element14
from US$9.38
98
in stock
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Logo for Farnell UK
Farnell
from US$8.54
98
in stock
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Richardson RFPD
from US$8.02
0
in stock
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Features

Standard 8-Pin Packages
High Power Factor Over Wide Load Range with Line Current Averaging
International Operation Without Switches
Instantaneous Overvoltage Protection
Minimal Line Current Dead Zone
Typical 250µA Start-Up Supply Current
Rejects Line Switching Noise
Synchronization Capability
Low Quiescent Current: 9mA
Fast 1.5A Peak Current Gate Driver

Last 6 months Inventory & Pricing History


Alternative Descriptions

Pfc Controller, Current, 25V, Nsoic-8 | Newark Electronics
PFC CONTROLLER, CURRENT, 25V, NSOIC-8 | element14
Power Factor Correction Controller 0.25mA 100kHz 8-Pin SOIC N Tube | Richardson RFPD


LT1249CS8#PBF Semiconductors - ICs by Linear Technology

POWRR FACTOR CONTROLLER SMD SOIC8

Status: Unknown
Series: -
RoHS: Unknown
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Specifications

UVLO -
Supply Voltage Min 11.5V
Supply Voltage Max 25V
Startup Current 250µA
Operating Supply Current 9mA
Controller IC Case Style SOIC
No. of Pins 8Pins
Duty Cycle (%) 96%
Frequency 125kHz
Operating Temperature Min 0°C
Operating Temperature Max 100°C
Product Range -
RoHS Phthalates Compliant Yes
MSL -
SVHC No SVHC (15-Jan-2018)
Base Number 1249
No. of Outputs 3Outputs
Operating Temperature Range 0°C to +100°C
Output Current Max 0.5A
Output Voltage 5V
Output Voltage Max 17.5V
Primary Input Voltage 25V
Termination Type Surface Mount Device
Voltage Vcc 27V

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LT1249CS8#PBF?

Additional datasheets, footprints and schematics for LT1249CS8#PBF are listed on our Part Details page. You can also find images and similar parts to LT1249CS8#PBF on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for LT1249CS8#PBF on our Product Comparison page. Access via the 'View Pricing & Stock' button to view LT1249CS8#PBF price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does LT1249CS8#PBF fall under?

The LT1249CS8#PBF is listed under Offline Power Factor Correction (PFC) Controllers.

Can I view similar or alternative parts?

You can view similar parts to LT1249CS8#PBF when available in the Offline Power Factor Correction (PFC) 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 LT1249CS8#PBF you can contact the distributor directly for product support, shipping queries etc.

Is the LT1249CS8#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for LT1249CS8#PBF have stock available?

Authorised distributors including Newark Electronics, element14, Farnell and Richardson RFPD have stock available or on a lead time for LT1249CS8#PBF.

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