MP21148

Active
1A Synchronous Step-down Converter with CCM


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Product Description

The MP21148 is a monolithic, step-down, switch-mode converter with built-in, internal power MOSFETs. It can achieve 1A of continuous output current from a 2.3V-to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated as low as 0.6V. The constant-on-time control scheme in forced CCM provides a fast transient response, low output voltage ripple, and eases loop stabilization. Fault protections include cycle-by-cycle current limiting and thermal shutdown. The MP21148 is available in an ultra-small QFN-6 (1.0mmx1.5mm) package and requires a minimal number of readily available, standard, external components. The MP21148 is ideal for a wide range of applications including high-performance DSPs, wireless power, portable and mobile devices, and other low-power systems.

Programmable

Product Features

  • 2.4MHz Switching Frequency
  • EN for Power Sequencing
  • Power Good Only for Fixed Output Version
  • Wide 2.3V-to-5.5V Operating Input Range
  • Output Adjustable from 0.6V
  • Up to 1A of Output Current
  • 120mΩ and 80mΩ Internal Power MOSFET Switches
  • Output Discharging
  • 100% Duty Cycle
  • Short-Circuit Protection (SCP) with Hiccup Mode
  • Stable with Low ESR Output Ceramic Capacitors
  • Available in a QFN-6 (1.0mmx1.5mm) Package
  • Continuous Conduction Mode (CCM)

Parametrics

  • fsw (max) (kHz)2400
  • Vin (min) (V)2.3
  • Vin (max) (V)5.5
  • Iout (max) (A)1
  • Isw Limit (typ) (A)2
  • Max Duty Cycle (%)1
  • Vfb (typ) (V)0.6
  • Iq (typ) (mA)0.5
  • Regulated Outputs1
  • Vout (max) (V)5.5
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-6 (1.0x1.5)
  • Control ModeCOT with fixed CCM
  • Common FeaturesPower Good Only for Fixed Output Version, Synchronous Rectification
  • Special Features100% Duty Cycle, Output Discharge

Evaluation Kit

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Kit details

The MP21148 is a monolithic, step-down, switch-mode converter with built-in internal power MOSFETs. It achieves 1A continuous output current from a 2.3V-to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V.

The Constant-On-Time control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-by-cycle current limiting and thermal shutdown.

The MP21148 is available in an ultra-small QFN-6 (1.0mmx1.5mm) package and requires a minimal number of readily available standard external components.

The MP21148 is ideal for a wide range of applications including high performance DSPs, wireless power, portable and mobile devices, and other low-power systems.

$25.00 + tax