Altera

ER5312D

1A Voltage Mode Synchronous Buck PWM DC-DC Converter

Topologie: Buck
Eingangsspannung (min.): 2.40 V
Eingangsspannung (max.): 5.50 V
Ausgang 1: 4.90 V / 1.000 A

Beschreibung

The ER5312D provides the benefits of high switching frequency with the flexibility to optimize the design for footprint or efficiency.The 4 MHz operation allows for the use of a tiny inductor and MLCC capacitors. It also enables a very wide control loop bandwidth providingexcellent transient performance and reduced output impedance. The internal compensation is designed for unconditional stability.Three VID output voltage select pins provide seven pre-programmed output voltages along with an option for external resistor divider.Output voltage can be programmed on-the-fly to provide fast, dynamic voltage scaling with smooth transitions between programmed outputvoltages.

Merkmale

  • Three external Components Required
  • 4 MHz Fixed Switching Frequency
  • High Efficiency, up to 94 %
  • 2 % Output Voltage Accuracy with 3 Pin VIDOutput Voltage Select
  • 2 % 0.6 V Feedback Voltage with ExternalDivider Option
  • 2.4 V to 5.5 V Input Voltage Range
  • 1 A Output Current Capability
  • Fast Transient Response
  • Low Ripple Voltage; 5 mVP-P Typical
  • Low Dropout Operation: 100 % Duty Cycle
  • Dynamic Output Voltage Scaling
  • Less Than 1 μA Shutdown Current
  • Stable with up to 60 μF Output Capacitance
  • Under Voltage Lockout with Hysteresis
  • Over Current, Short Circuit, and ThermalProtection
  • 2 mm x 3 mm x .9 mm DFN-10 Package
  • RoHS Compliant; MSL 3 260 °C Reflow

Artikel

  Artikel Nr. SPEC Produktserie L1
(µH)
IR 1
(A)
ISAT 1
(A)
RDC1 typ
(mΩ)
fres 1
(MHz)
Muster
744030001 PDF WE-TPC SMT-Speicherdrossel 1.2 1 1.1 95 210