UCC39411 - 低功耗同步升压转换器

UCC39411是TI德州仪器公司的一款转换器（集成开关）产品，UCC39411是低功耗同步升压转换器，本站介绍了UCC39411的封装应用图解、特点和优点、功能等，并给出了与UCC39411相关的TI元器件型号供参考。

UCC39411 - 低功耗同步升压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The UCCx9411 family of low-input voltage, single-inductor-boost converters is optimized to operate from a single or dual alkaline cell, and steps up to a 3.3 V, 5 V, or adjustable output at 200 mW. The UCCx9411 family also provides an auxiliary 7 V output, primarily for the gate-drive supply, which can be used for applications requiring an auxiliary output, such as 5 V, by linear regulating. The primary output starts up under full load at input voltages typically as low as 0.8 V with a ensured max of 1 V, and operates down to 0.5 V once the converter is operating, thereby maximizing battery usage.

The UCCx9411 family is designed to accommodate 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 milli-watts. High efficiency at low output current is achieved by optimizing switching and conduction losses with a low total quiescent current. At higher output current, the 0.5 synchronous rectifier along with continuous mode conduction provide high power efficiency. The wide input voltage range of the UCCx9411 family can accommodate other power sources such as NiCd and NiMH.

The UCCx9411 family also provides shutdown control. Packages available are the 8-pin SOIC (D) and 8-pin TSSOP (PW) to optimize board space.

产品特性

1 V Input Voltage Operation Start-Up Ensured Under Full Load on Main Output, and Operation Down to 0.5 V
200 mW Output Power at Battery Voltages as Low as 0.8 V
Secondary 7 V Supply from a Single Inductor
Output Fully Disconnected in Shutdown
Adaptive Current Mode Control for Optimum Efficiency
High Efficiency Over Wide Operating Range
6 µA Shutdown Supply Current
Output Reset Function with Programmable Reset Period

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