GENERAL DESCRIPTION
The EV1531DQ-002A Evaluation Board is designed to demonstrate the capabilities of MPS’ MP1531 triple output step-up converter with charge-pumps.
The MP1531 includes a 250KHz fixed-frequency step-up converter and a positive and negative linear regulator. The linear regulators are powered via charge-pumps driven by the step-up converter switch node.

FEATURES
• 2.7V to 5.5V Operating Input Range
• 500mA Switch Current Limit
• 3 Outputs in Single Package
    • Step-Up Converter up to 22V
    • Positive 10mA Linear Regulator
    • Negative 10mA Linear Regulator
• 250mΩ Internal Power MOSFET Switch
• Up to 95% Efficiency
• 1µA Shutdown Mode
• Fixed 250KHz Frequency
• Positive Regulator up to 38V
• Negative Regulator down to -20V
• Internal Power-On Sequencing
• Adjustable Soft-Start/Fault Timer
• Thermal Shutdown
• Cycle-by-Cycle Over Current Protection
• Under Voltage Lockout
• Ready Flag

APPLICATIONS
• TFT LCD Displays
• Portable DVD Players
• Tablet PCs
• Car Navigation Displays