QX3400是一款高效率的PWM同步升压DC/DC转换器，可提供高效的电源系统解决方案。

QX3400的工作电压在0.9V到5.0V之间，采用1.4MHz固定的工作频率。这些特性大大减小了它外部连接的电感电容的体积和容量，降低了整个电源系统的成本并减小了电路板的空间。

QX3400提供2.5V到5.0V的输出电压，采用内部同步开关，无需肖特基二极管就能提供高效的转换效率。

QX3400在输出电压为3.3V时，用单个AA电池供电能够提供260mA以上的电流，用两个AA电池供电能够提供600mA以上的电流。

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QX3400 Synchronous Boost DC / DC Converter

QX3400 is a high-efficiency PWM synchronous boost DC / DC converter, which can provide efficient power system solutions.

The operating voltage of the QX3400 is between 0.9V and 5.0V, with a fixed operating frequency of 1.4MHz. These characteristics greatly reduce the volume and capacity of the externally connected inductor and capacitor, reduce the cost of the entire power supply system and reduce the space of the circuit board.

The QX3400 provides an output voltage of 2.5V to 5.0V and uses an internal synchronous switch to provide efficient conversion efficiency without Schottky diodes.

When the output voltage of the QX3400 is 3.3V, a single AA battery can provide more than 260mA, and two AA batteries can provide more than 600mA.

QX3400 is available in SOT23-6 package.

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Ø Maximum conversion efficiency: 96%

Ø Low starting voltage: 0.9V

Ø Shutdown current: less than 1uA

Ø Input voltage: 0.9V ~ 5.0V

Ø Output voltage: 2.5V ~ 5.0V (using Schottky diode can be as high as 5.2V)

Ø Low switch on-resistance RDS_ON

Ø Fixed switching frequency: 1.4MHz

Ø High switch conduction current: 1A

Ø Short circuit protection

Typical application circuit diagram

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Ø Digital camera, MP3, PDA, cellular phone

Ø Cordless phone, modem, PC card

Ø Portable media player

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