UCC24650DBVT
Active200-V WAKE-UP MONITOR FOR FAST TRANSIENT PRIMARY-SIDE REGULATION
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UCC24650DBVT
Active200-V WAKE-UP MONITOR FOR FAST TRANSIENT PRIMARY-SIDE REGULATION
Technical Specifications
Parameters and characteristics for this part
| Specification | UCC24650DBVT |
|---|---|
| Applications | Wake Up Monitor |
| Current - Supply | 63 µA |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| Voltage - Supply [Max] | 28 V |
| Voltage - Supply [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 1.20 | |
| 10 | $ 1.07 | |||
| 25 | $ 1.02 | |||
| 100 | $ 0.84 | |||
| Digi-Reel® | 1 | $ 1.20 | ||
| 10 | $ 1.07 | |||
| 25 | $ 1.02 | |||
| 100 | $ 0.84 | |||
| Tape & Reel (TR) | 250 | $ 0.78 | ||
| 500 | $ 0.69 | |||
| 1250 | $ 0.55 | |||
| 2500 | $ 0.51 | |||
| 6250 | $ 0.48 | |||
| 12500 | $ 0.47 | |||
| Texas Instruments | SMALL T&R | 1 | $ 1.03 | |
| 100 | $ 0.70 | |||
| 250 | $ 0.54 | |||
| 1000 | $ 0.36 | |||
Description
General part information
UCC24650 Series
The UCC24650 is an easy-to-use secondary-side voltage monitor that periodically measures its own VDD voltage. A relative droop of 3% from the previous reading triggers a alert signal to a receiving primary-side regulation (PSR) controller. Its low-power consumption helps achieve <5-mW standby loss in many applications.
An internal 200-V MOSFET switch is applied across a ground-referenced rectifier to provide a current-limited pulse to the flyback transformer secondary winding, which couples the signal to the primary-side controller. This signal is repeated at 33 kHz until controller-driven switching activity is detected.
Relative-droop detection allows scaling to any voltage between 5 and 28 V. The alert function allows very-low standby frequency to minimize switching loss and reduction of output capacitance needed to respond to a heavy load step. This monitor is used with a controller capable of detecting the signal, such as the UCC28730 PSR flyback controller.
Documents
Technical documentation and resources