| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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2,500 pcs
|
2500 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Clock Sync | |
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| Duty Cycle (Max) | |
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| Synchronous Rectifier | |
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| Voltage |
The Texas Instruments UC3844D8TR is a single-ended, current mode PWM controller suitable for various DC-to-DC power supply topologies including Boost, Buck, Buck-Boost, Flyback, and Forward. It features an operating voltage range of 12V to 28V and can operate at frequencies up to 500kHz with a maximum duty cycle of 48%.
Key internal circuits include an undervoltage lockout (UVLO) with hysteresis, a precision reference trimmed for accuracy, latched operation logic, a pulse-width modulation (PWM) comparator for current-limit control, and a high-current totem-pole output stage. The device is optimized for off-line and DC-to-DC converters, offering features like low start-up current (<1mA), automatic feedforward compensation, pulse-by-pulse current limiting, and enhanced load-response characteristics.
This controller is available in an 8-SOIC package, designed for surface mount applications. Its robust design makes it suitable for applications requiring precise control over power conversion processes.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.27 | $0.27 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The UC3844D8TR operates from 12V to 28V.
The UC3844D8TR operates from 0°C to 70°C.
The UC3844D8TR is housed in an 8-SOIC surface-mount package.
The UC3844D8TR supports switching frequencies up to 500kHz.
The UC3844D8TR supports boost, buck, buck-boost, flyback, and forward topologies.
The maximum duty cycle of the UC3844D8TR is 48%.
Yes, the UC3844D8TR includes undervoltage lockout with hysteresis.