UCC28711DR
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-SOIC (0.154", 3.90mm Width), 7 Leads |
| Mfr | Texas Instruments |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Voltage - Breakdown | - |
| Supplier Device Package | 7-SOIC |
| Fault Protection | Current Limiting, Over Voltage |
| Topology | Flyback |
| Voltage - Supply (Vcc/Vdd) | 9V ~ 35V |
| Control Features | - |
| Frequency - Switching | 680Hz ~ 100kHz |
| Internal Switch(s) | No |
| Voltage - Start Up | 21 V |
| Duty Cycle | - |
| Output Isolation | Isolated |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | UCC28711 |
| REACH Status | REACH Unaffected |
| Standard Package | 2,500 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
UCC28711DR PSR PWM Controller 680Hz ~ 100kHz 7-SOIC
The UCC28711DR is a high-efficiency, primary-side regulated (PSR) PWM controller from Texas Instruments, designed for isolated AC/DC flyback converters without optocouplers. Housed in a compact 7-pin SOIC surface-mount package (tape-and-reel), it operates from a wide 9V to 35V supply voltage and supports an industrial temperature range of -40°C to +125°C. Part of the UCC2871x family, it integrates a 700V high-voltage startup switch to minimize standby power and simplify offline power supply designs.
Key Features & Applications
This controller delivers constant-voltage (CV) and constant-current (CC) regulation with ±5% accuracy across line and load conditions, operating in discontinuous conduction mode (DCM) with valley switching for high efficiency. It features a fixed 100kHz maximum switching frequency, 0mV fixed cable compensation, and NTC temperature sensing capability, alongside green mode for optimized light-load performance.
Integrated protections include overcurrent protection (OCP), input line monitoring, leading-edge blanking, and soft-start. Ideal for 5W–30W low-power AC/DC adapters, battery chargers, LED drivers, home appliances, and industrial power supplies, it eliminates optocouplers and secondary-side feedback, reducing BOM complexity and PCB space.
Alternative Equivalent Models
1. UCC28712D: TI pin-compatible PSR controller with 150mV cable compensation, 106kHz frequency, and identical DCM operation for cost-sensitive adapter designs.
2. UCC28713DR: TI SOIC-7 PSR controller with 300mV cable compensation, NTC support, and 106kHz switching for higher-power flyback applications.
3. UCC28710DR: TI PSR controller with programmable cable compensation, 100kHz frequency, and DCM valley switching for flexible design tuning.
4. ON Semiconductor NCP1014: 7-pin SOIC PSR controller with optocoupler-free operation, 100kHz frequency, and 700V startup for low-power adapters.
5. STMicroelectronics VIPER22: 7-pin SOIC flyback controller with integrated 700V startup, PSR, and 100kHz frequency for cost-effective offline power supplies.
