MP2158A

Active

High Efficiency, 1A, 6V, 1.5MHz, 17uA Iq, COT Synchronous Step Down Converter with better Vfb accuracy and better load regulation in QFN package



Talk to an Engineer or get a Quote

Product Description

The MP2158A is a monolithic step-down, switch-mode converter with built-in internal power MOSFETs. It achieves 1A of continuous output current from a 2.5V to 6V 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 provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. 
The MP2158A is available in a small QFN-8 (1.5mmx2mm) package and requires only a minimal number of readily available, standard, external components.
The MP2158A is ideal for a wide range of applications, including high-performance DSPs, FPGAs, PDAs, and portable instruments.

Configurable

Product Features

  • Very Low IQ of 17μA
  • Default 1.5MHz Switching Frequency
  • 1.5% VFB Accuracy
  • EN and Power Good for Power Sequencing
  • Wide 2.5V to 6V Operating Input Range
  • Output Adjustable from 0.6V
  • Up to 1A of Output Current
  • 100% Duty Cycle in Dropout
  • 120mΩ and 90mΩ Internal Power MOSFET Switches
  • Cycle-by-Cycle Over-Current Protection
  • Short-Circuit Protection with Hiccup Mode
  • Stable with Low ESR Output Ceramic Capacitors
  • Available in a QFN-8 (1.5mmx2mm) Package

Parametrics

  • fsw (max) (kHz)1500
  • Vin (min) (V)2.5
  • Vin (max) (V)6
  • Iout (max) (A)1
  • Max Duty Cycle (%)1
  • Vfb (V)0.6
  • Iq (typ) (mA)0.017
  • Regulated Outputs1
  • Vout (max) (V)6
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-8 (2.0x1.5)
  • Control ModeCOT
  • Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
  • Special Features100% Duty Cycle
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.