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TL2845D-8

TL2845D-8 PWM Controller, Boost/Flyback/Forward, 500kHz

MPNTL2845D-8
End of Life

Texas Instruments TL2845D-8 current-mode PWM controller, boost/flyback/forward topologies, up to 500kHz switching, 48% max duty cycle, 8-SOIC surface-mount package, tube.

$1.47Ref. price · indicative, final on quote
Texas Instruments TL2845D-8 datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

TL2845D-8 specifications
ParameterValue
Output typeTransistor Driver
MountingSurface Mount
Voltage - supply (Vcc (Vdd))7.6V ~ 30V
Frequency - switchingUp to 500kHz
I/O channels1
Output phases1
Duty cycle48%
Operating temperature-40°C ~ 85°C (TA)
PackageTube
FunctionStep-Up, Step-Up/Step-Down
TopologyBoost, Flyback, Forward
Clock syncNo
Case8-SOIC (0.154\", 3.90mm Width)
Control featuresFrequency Control
Output configurationPositive
Synchronous rectifierNo

Product details

Current-mode PWM controller for boost, flyback, forward designs

The Texas Instruments TL2845D-8 is a current-mode PWM controller that supports boost, flyback, and forward topologies — a single part covers isolated and non-isolated power stages up to 500 kHz switching frequency. The 48% maximum duty cycle limits the on-time per cycle, which matters for flyback designs where the transformer reset voltage sets the maximum duty before core saturation.

Supply rail and temperature envelope

Operating from 7.6 V to 30 V on Vcc, the TL2845D-8 starts cleanly from a 12 V bias rail and tolerates the ripple of a bootstrap winding in a flyback without an external LDO.

Frequently asked questions

What is TL2845D-8's listed function and topology support?

The TL2845D-8 is a current-mode PWM controller for step-up and step-up/step-down topologies, specifically boost, flyback, and forward converters — a single part handles multiple isolated and non-isolated architectures.

What compliance documentation does Texas Instruments provide for TL2845D-8?

Texas Instruments lists the TL2845D-8 as ROHS3 compliant, and the datasheet is available from the manufacturer.