The MAX8570EUT+T is a high efficiency LCD boost with True Shutdown mode in 6 pin SOT-23 package. This LCD step-up converter uses an internal N-channel switch and an internal P-channel output isolation switch. A unique control scheme provides highest efficiency over a wide range of load conditions. The internal MOSFET switch reduces external component count and high switching frequency allows for tiny surface mount components. The MAX8570EUT+T uses 110mA current limit to reduce ripple and component size in low current applications. The built-in safety features protect the internal switch and downstream components from fault conditions. It also includes low quiescent current and True Shutdown mode to save power. The MAX8570EUT+T allows user to set the output voltage between 3V and 28V. This step-up converter is ideal for small LCD panels with low current requirements but can also be used in other applications such as LCD bias generators and polymer LEDs (OLED).
Feature
- Supply voltage range from 2.7V to 5.5V
- Operating temperature range from -40°C to 85°C
- 20mA at 20V from single Li+ battery
- Efficiency of 87%
- Up to 800KHz switching frequency
- VCC shutdown current of 0.05µA at TA = 25°C and VCC supply current of 25µA
- Line regulation of 0.1 %/V and load regulation of 0.1 %/mA
Applications
- Cell Phones/Cordless Phones
- Handy Terminals
- LCD Bias Generators
- Organizers
- Palmtop Computers
- PDAs and Other Handheld Devices
- Polymer LEDs (OLED)