The UCC39411 family is a low input voltage, single inductor boost converter optimized to operate from a single or dual alkaline cell and provide a 3.3V, 5V, or adjustable output at 200mW. The family also includes an auxiliary 7V output primarily for the gate drive supply, which can be used for applications requiring an auxiliary output such as 5V, through linear regulation. The primary output can start up under full load at input voltages typically as low as 0.8V with a guaranteed maximum of 1V and can operate down to 0.5V once the converter is operating, maximizing battery utilization. The UCC39411 family is designed for demanding applications such as pagers and cell phones that require high efficiency over a wide operating range of several milliwatts to a couple of hundred milliwatts. High efficiency at low output current is achieved by optimizing switching and conduction losses with a low total quiescent current (50µA). At higher output currents, the 0.5Ω switch and 1.2Ω synchronous rectifier, along with continuous mode conduction, provide high power efficiency. The wide input voltage range of the UCC39411 family can accommodate other power sources such as NiCd and NiMH. The 39411 family also offers shutdown control. Available packages include the 8-pin SOIC (D), 8-pin DIP (N or J), and 8-pin TSSOP (PW) to optimize board space.
The UCC19411 family of low input voltage, single inductor boost converters is optimized to operate from a single or dual alkaline cell. The device steps up to a 3.3V, 5V, or adjustable output at 200mW and provides an auxiliary 7V output primarily for gate drive supply.
| Output Power | 200mW |
|---|---|
| Minimum Start-up Voltage (Full Load) | 0.8V |
| Quiescent Supply Current | 50 µA |
| Shutdown Supply Current | 6µA |
| Package Types | 8 pin SOIC, 8 pin DIP, 8 pin TSSOP |
The primary output will start up under full load at input voltages typically as low as 0.8V.
The device operates down to 0.5V once running, but the absolute maximum rating for VIN is 10V.
The UCC19411 family provides an auxiliary 7V output, primarily for the gate drive supply.