UCC35705D
Active15V VOLTAGE MODE 4MHZ PWM CONTROLLER WITH 8.8V/8.0V UVLO , 0C TO 70C
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UCC35705D
Active15V VOLTAGE MODE 4MHZ PWM CONTROLLER WITH 8.8V/8.0V UVLO , 0C TO 70C
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Technical Specifications
Parameters and characteristics for this part
| Specification | UCC35705D |
|---|---|
| Clock Sync | False |
| Duty Cycle (Max) [Max] | 93 % |
| Frequency - Switching | 1 MHz |
| Function | Step-Up, Step-Up/Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Output Configuration | Positive, Isolation Capable |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 8-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 8-SOIC |
| Synchronous Rectifier | False |
| Topology | Flyback, Boost, Forward Converter |
| Voltage - Supply (Vcc/Vdd) [Max] | 15 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 8.2 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Arrow | N/A | 75 | $ 2.05 | |
| Digikey | Tube | 1 | $ 2.82 | |
| 10 | $ 2.54 | |||
| 75 | $ 2.39 | |||
| 150 | $ 2.04 | |||
| 300 | $ 1.91 | |||
| 525 | $ 1.67 | |||
| 1050 | $ 1.39 | |||
| 2550 | $ 1.29 | |||
| 5025 | $ 1.24 | |||
| Texas Instruments | TUBE | 1 | $ 2.44 | |
| 100 | $ 2.01 | |||
| 250 | $ 1.45 | |||
| 1000 | $ 1.09 | |||
Description
General part information
UCC35705 Series
The UCC35705 and UCC35706 devices are 8-pin voltage mode primary side controllers with fast over-current protection. These devices are used as core high-speed building blocks in high performance isolated and non-isolated power converters.
UCC35705/UCC35706 devices feature a high speed oscillator with integrated feed-forward compensation for improved converter performance. A typical current sense to output delay time of 25 ns provides fast response to overload conditions. The IC also provides an accurate programmable maximum duty cycle clamp for increased protection which can also be disabled for the oscillator to run at maximum possible duty cycle.
Two UVLO options are offered. The UCC35705 with lower turn-on voltage is intended for dc-to-dc converters while the higher turn-on voltage and the wider UVLO range of the UCC35706 is better suited for offline applications.
Documents
Technical documentation and resources