GENERAL DESCRIPTION

The ZCC66099 is a synchronous step-up converter with 0.65μA ultra low quiescent current. It is designed for products powered by alkaline battery, NiMH rechargeable battery,Li-Mn battery or rechargeable Li-lon battery, for which high efficiency under light load condition is critical to achieve long battery life operation.

The ZCC66099 step-up converter only consumes 0.65μA quiescent current under light load condition and can achieve up to 75% efficiency at 10μA load with fixed output voltage version. It can also support up to300mA output current from 3.3V to 5V conversion, and achieve up to 93% efficiency at200mAload.

The zCC66099 also offers both down mode andpass-through operation for different applications. In down mode, the output voltage can still be regulated at target value even when input voltage is higher than output voltage. In pass-through mode, the output voltage follows input voltage. The zCC66099 exits down mode and enters into pass-through mode when VIN > VouT+0.3V.

The ZCC66099 supports true shutdown function when it is disabled, which disconnects the load from the input supply to reduce the current consumption.

The ZCC66099 offers both adjustable output voltage version and fixed output voltage versions. It is available in Green WLCSP-1.22x0.83-6B and TDFN-2x2-6AL packages.

FEATURES

*Operating Input Voltage Range:0.9V to 5.2V

*Ultra Low Quiescent Current

  ◆0.6μA Ultra Low lqinto VOUT Pin

 ◆ 0.05μA Ultra Low lqinto VIN Pin

*1.2MHz Fixed Frequency Operation

*Adjustable Output Voltage from 2.5V to 5.2V

*Fixed Output Voltage Versions Available

*Power-Save Mode for Improved Efficiency at Low Output Power

*Regulated Output Voltage in Down Mode

*True Disconnection During Shutdown

*Up to 75% Efficiency at 10μA Load with Fixed Output Voltage Version

Up to 93% Efficiency from 10mA to 300mA Load

*-40℃

Rangeto +85 Operating Ambient Temperature

*Available in Green WLCSP-1.22x0.83-6B and TDFN-2x2-6AL Packages

APPLICATIONS

Memory LCD Bias

Optical Heart Rate Monitor LED Bias 

Wearable Applicat

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