The SY5951 is a synchronous step-up converter with 600nA ultra low quiescent current. It is designed for products are powered by alkaline battery, NiMH rechargeable battery,
Li-on battery or rechargeable Li-on battery, under light load, it has high efficiency which can achieve longer battery life.
The SY5951 also offers (supports) both down mode and pass-through operation (pass mode) for different applications.
In down mode, the output voltage can be regulated lower than input. In pass-through mode, the output voltage follows input voltage.
The SY5951 exits down mode and enters into pass-through mode when VIN > VOUT + 0.5V.
The SY5951 supports true shutdown function when it is disabled, which disconnects the load from the input supply to reduce the current consumption.
The SY5951 offers both adjustable output voltage version and fixed output voltage versions. It is available in Green WLCSP-1.22×0.83-6B and TDFN-2×2-6AL packages.
Operating Input Voltage Range: 0.7V to 5.5V
Ultra Low Quiescent Current: 400nA Ultra Low IQ into VIN Pin
Adjustable Output Voltage from 2.5V to 5.5V
Fixed Output Voltage Versions Available
Power-Save Mode for Improved Efficiency at Low Output Power
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
Available in Green WLCSP6 and TDFN-2×2-6AL Packages
Memory LCD Bias
Optical Heart Rate Monitor LED Bias
Wearable Applications
Low Power Wireless Applications
Portable Products
Battery Powered System
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Website:www.vanestudio.com.cn
Address:19th Floor, Caixun Science and Technology Building, No. 3176, Keyuan South Road, Nanshan District, Shenzhen
SY5951