The MAX15022 evaluation kit (EV kit) circuit demonstrates the MAX15022 IC, which integrates two high-performance PWM switching step-down regulators and two low-dropout (LDO) controllers. Each controller and regulator features independent enable controls for power-up sequence operation. The EV kit is designed to operate from a single 4.5V to 5.5V DC power supply.
The synchronous step-down outputs provide 3.3V/4A and 1.5V/2A, and can be configured for power-up sequencing or tracking operation. The converter switching frequency is set to 2MHz and operates 180° out-of-phase, reducing input voltage ripple and total RMS input ripple current. The LDO outputs provide 2.5V and 1.2V, at up to 500mA each. Each LDO controller is powered from either the input power source or one of the regulator outputs.
Key Features
Applications/Uses
4.5V to 5.5V Input Range
Regulator Outputs
3.3V at 4A
1.5V at 2A
2MHz Switching Frequency
LDO Outputs
2.5V (Up to 500mA)
1.2V (Up to 500mA)
Independent Enable Inputs for All Outputs
Configurable Power-Up Sequencing for Outputs
Configurable Power-Up Tracking for Regulators (VOUT1, VOUT2)
Thermal Shutdown and Hiccup-Mode Short-Circuit Protection
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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