The MP5403GQBU-Z is a monolithic power management unit containing two high-efficiency, step-down, switching converters and a load switch. The two regulators supply current up to 3.5A and 2.5A separately, and the load switch supplies up to 3A of load current with an extremely low RDS(ON). With an input range of up to 6V, the MP5403GQBU-Z is ideal for powering ASIC and SOC for solid-state drives and other compact power systems.The peak-current-mode control scheme with pulse-skip-mode operation provides the two switchers with fast transient response, high light-load efficiency, and minimum capacitance by using an interleaving PWM clock between the two switchers. The 3A load switch with a low 20m? on resistance provides flexible system configuration.A full set of enable control pins and power good open-drain indicators allow for easy implementation of the start-up and shutdown sequences.Full protection features include over-current protection (OCP) and thermal shutdown.The MP5403GQBU-Z requires a minimal number of readily available, standard, external components and is available in a small UTQFN-20(2.5mmx3mm) package.Applications:• Solid-State Drives• Hybrid Drives• Low Voltage System Power 9icnet Electronics is an authorized Monolithic Power Systems distributor.
Feature
- Low Iq: 85µA for Two Switchers Total
- Two Buck Converters
- o 3.5A with 55mΩ/20mΩ RDS(ON)
- o 2.5A with 60mΩ/22mΩ RDS(ON)
- o 1.5MHz Switching Frequency
- o 180° Interleaving Operation
- o 100% Duty Cycle
- o Load Switch Mode by Pulling FB Low
- o Latch-Off Short-Circuit Protection (SCP)
- o Parallel Capability by Connecting SW Nodes Together
- o Internal Soft Start and Output Discharge
- o Optimized Light-Load Efficiency
- Available Fixed Output Options via Package Trim:
- Ch1: 0.9V, 1.1V, 2.5V, 2.85V
- Ch2: 0.9V, 1.2V, 1.8V, 2.5V
- One Load Switch
- o 3A with 20mΩ RDS(ON)
- o Soft Start and Output Discharge
- o Over-Current Protection (OCP)
- EN and Power Good for Power Sequencing
- Input Power Failure Indicator (PFL) with Adjustable Threshold and Delay
- Thermal Shutdown
- Available in Ultra-Thin UTQFN-20 (2.5mmx3mm) Package
