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Technical Specifications
Parameters and characteristics for this part
| Specification | UCC25710DW |
|---|---|
| Applications | Lighting, Backlight |
| Dimming | PWM |
| Internal Switch(s) | False |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 20-SOIC |
| Package / Case [y] | 0.295 in |
| Package / Case [y] | 7.5 mm |
| Supplier Device Package | 20-SOIC |
| Type | AC DC Offline Switcher |
| Voltage - Supply (Max) [Max] | 18 V |
| Voltage - Supply (Min) [Min] | 11 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 325 | $ 3.11 | |
| Texas Instruments | TUBE | 1 | $ 3.36 | |
| 100 | $ 2.94 | |||
| 250 | $ 2.06 | |||
| 1000 | $ 1.66 | |||
Description
General part information
UCC25710 Series
The UCC25710 device is an LLC half-bridge controller for accurate control of multi-string LED backlight applications. It is optimized for multi-transformer, multi-string LED architectures. Superior LED current matching in multiple strings can be achieved with this controller and architecture. Compared to existing LED backlight solutions, the multi-transformer architecture provides the highest overall efficiency from AC input to LED load.
The LLC controller function includes a Voltage Controlled Oscillator (VCO) with programmable FMINand FMAX, half-bridge gate drivers with a fixed dead time of 500 ns and a GM current amplifier. The LLC power delivery is modulated by the controller’s VCO frequency. The VCO has an accurate and programmable frequency range. At very low power levels the VCO frequency goes from FMAXto zero to maximize efficiency at low LED currents.
The LED current loop reference is set by a divider off the VREF 5-V output. The reference can be varied over a 0.5-V to 2.6-V range, allowing analog dimming to be combined with PWM dimming.
Documents
Technical documentation and resources
