MP2188

New
Dual 3A, 5.5V, 1.2MHz, COT Synchronous Step-Down Switcher with PG and auto discharge


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Product Description

The MP2188 is a monolithic, step-down, switch-mode dual converter with internal power MOSFETs. It can achieve up to 3A continuous output current from a 2.5V?o-5.5V input voltage with excellent load and line regulation. The output voltages of two channels are 1.1V and 1.8V respectively. The constant-on-time control scheme provides fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown. The MP2188 is available in small 2.2mmx2.6mm QFN-16 package and requires only a minimal number of readily available standard external components. The MP2188 is ideal for a wide range of applications including high-performance DSPs, FPGAs, smartphones, portable instruments, and DVD drivers.

Product Features

  • Wide 2.5V-to-5.5V Operating Input Range
  • Fixed Output Voltages: 1.1V & 1.8V
  • Adjustable Output Voltage from 0.8V by external FB Resistor
  • 100% Duty Cycle in Dropout
  • Up to 3A Output Current
  • Low IQ: 80?
  • 60m? and 30m? Internal Power MOSFET Switches
  • Default 1.2MHz Switching Frequency
  • EN and Power-Good for Power Sequencing
  • Cycle-by-Cycle Over-Current Protection
  • Auto Discharge at Power-Off
  • Short-Circuit Protect with Hiccup Mode
  • Stable with Low-ESR Output Ceramic Capacitors
  • Available in a 2.2mm x 2.6mm QFN-16 Package

Parametrics

  • fsw (max) (kHz)1200
  • Vin (min) (V)2.5
  • Vin (max) (V)5.5
  • Iout (max) (A)3
  • Isw Limit (typ) (A)5.3
  • Max Duty Cycle (%)1
  • Vfb (typ) (V)0.6
  • Iq (typ) (mA)0.08
  • Regulated Outputs2
  • Vout (max) (V)5
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageQFN-16 (2.2x2.6)
  • Control ModeCOT
  • Common FeaturesDual Output, Light-Load Efficiency, Power Good, Synchronous Rectification
  • Special Features100% Duty Cycle, Fixed Output, Soft Stop

Evaluation Kit

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Kit details

The EV2188-QA-00A evaluation Board is designed to demonstrate the capabilities of MP2188, an internally compensated 1.2MHz dual COT synchronous step-down regulator. The output voltages of the two channels are 1.1V and 1.8V respectively.

The constant-on-time control scheme provides fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown.

The MP2188 is available in small 2.2mmx2.6mm QFN16 package and requires only a minimal number of readily available standard external components.

US$ 25.00 + tax