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Texas Instruments UC2846DW — Analog & Data Acquisition
Texas Instruments

UC2846DW PWM Controller, 500kHz, 16-SOIC

MPNUC2846DW
End of Life

Texas Instruments UC2846DW current-mode PWM controller, 500kHz switching frequency, 50% max duty cycle, synchronous rectification, 6.95V to 40V supply, -40°C to 85°C, 16-SOIC.

$4.58Ref. price · indicative, final on quote
UC2846DW datasheet
Packaging16-SOIC (0.295", 7.50mm Width)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

UC2846DW Technical Specifications
ParameterValue
Output typeTransistor Driver
Mounting typeSurface Mount
Voltage - supply (Vcc (Vdd))6.95V ~ 40V
Frequency500kHz
Number of outputs2
Output phases1
Duty cycle50%
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FunctionStep-Up, Step-Up/Step-Down
TopologyBoost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Clock syncYes
Case16-SOIC (0.295\", 7.50mm Width)
Control featuresCurrent Limit, Enable, Frequency Control, Soft Start
Output configurationPositive
Synchronous rectifierYes

Product details

Multi-topology PWM controller for isolated and non-isolated supplies

The Texas Instruments UC2846DW is a current-mode PWM controller that handles boost, flyback, forward, half-bridge, full-bridge, and push-pull topologies. It drives two transistor outputs with a 50% maximum duty cycle, switching up to 500 kHz. The controller includes synchronous rectification drive, clock sync, and control features like current limit, enable, frequency control, and soft start. Supply range is 6.95 V to 40 V, and it operates over -40°C to 85°C ambient. The 16-SOIC package suits surface-mount assembly for industrial power supplies, telecom DC-DC converters, and battery-powered step-up stages.

500 kHz switching and 50% duty — what they mean for the magnetics

Switching frequency is 500 kHz. Maximum duty cycle is 50%.

Synchronous rectification and supply range

Synchronous rectifier output drives external MOSFETs. Supply range is 6.95 V to 40 V.

Active lifecycle — no redesign pressure

The UC2846DW carries an Active product status with ROHS3 compliance. This part is a current-production choice for new designs and ongoing production; no forced redesign horizon from the manufacturer.

Frequently asked questions

Is UC2846DW obsolete or active?

UC2846DW is Active per the manufacturer's product status. No discontinuation or last-time-buy notices are in effect.

Does UC2846DW have synchronous rectification?

Yes, the UC2846DW includes a synchronous rectifier drive output, enabling secondary-side MOSFET control for improved efficiency.

What are the alternatives to UC2846DW?

The UCC2806DWTR is a close functional peer — same 50% duty cycle, two outputs, and similar topology support (boost, flyback, forward converter), but it lacks clock sync. The LM5150QURUMRQ1 is an automotive-grade (AEC-Q100) boost controller with clock sync and a higher 87% duty cycle, but it is single-output and does not support synchronous rectification.

What is UC2846DW's listed function?

The UC2846DW is a step-up and step-up/step-down PWM controller, supporting boost, flyback, forward converter, full-bridge, half-bridge, and push-pull topologies.