| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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2,500 pcs
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2500 pcs | On Request | 1 | On Request | On Request | 1114+ | On Request | On Request |
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| Clock Sync | |
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| Duty Cycle (Max) | |
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| Synchronous Rectifier | |
| Tape & Reel | |
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The UCC38C44DGKR from Texas Instruments is a high-performance, current-mode PWM controller. This BiCMOS version offers pin-for-pin compatibility with existing UCx84x and UCx84xA families, serving as an enhanced replacement.
Key electrical specifications include an operating voltage range of 9V to 18V, a maximum duty cycle of 48%, and an operating frequency up to 1MHz. It boasts a low startup current of 50µA maximum and a low operating current of 2.3mA at 52kHz. The controller provides fast, cycle-by-cycle overcurrent limiting with a response time of 35ns and features rail-to-rail output with 25ns rise and 20ns fall times. The integrated 2.5V error amplifier reference is accurate to ±1%.
This device is available in an 8-VSSOP package, minimizing board space. It includes undervoltage lockout protections and is suitable for various topologies including Boost, Flyback, and Forward converters. The UCC38C44DGKR is noted as 'Not Recommended for New Designs'.
Environmental compliance includes RoHS3 compliance and REACH unaffected status, with an MSL rating of 1 Unlimited.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.92 | $0.92 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage range is 9V to 18V.
The UCC38C44DGKR is available in an 8-VSSOP package.
The operating temperature range is 0°C to 70°C.
The maximum switching frequency is 1MHz.
The maximum duty cycle is 48%.
The peak gate drive current is ±1A.
Yes, the undervoltage lockout (UVLO) has thresholds of 14.5V (start) and 9V (stop).