de

Warenkorb

Ihr Warenkorb ist leer.

IC-Referenzdesignsuche
IC-Hersteller Sky Works

IC-Hersteller (84)

Sky Works EVAL5981

1 A step-down switching regulator demonstration board based on the L5981

Details

TopologieAbwärtswandler
Eingangsspannung3.3-18 V
Schaltfrequenz250-1000 kHz
Ausgang 13.3 V / 1 A
IC-Revision1

Beschreibung

The EVAL5981 demonstration board provides the design engineer with a fully functional step-down switching regulator with an output current of up to 1 A. The L5981 integrates STMicroelectronics step-down switching regulator, together with all the external components required for a typicalapplication.The rated voltage of the input capacitor and the Schottky diode rectifier repetitive peak reverse voltage are both 25 V, making the board capableof covering the entire 2.9 V - 18 V input voltage range of the L5981 device.The board features an external resistor divider (R1 and R2) designed for an output voltage of 3.3 V.The output voltage can be set to a level from 0.6 V up to the rated voltage of the output capacitor (16 V). The compensation network on the demonstration board allows the use of MLCC as output filter to keep the loop stable. The inductor saturation current and forward current of the Schottky diode are within the current limit values.The switching frequency on the demonstration board is set to 500 kHz by means of the R5 resistor connected to pin Fsw.

Eigenschaften

  • 1 A DC output current2.9 V to 18 V input voltage Output voltage adjustable from 0.6 V250 kHz switching frequency, programmable
  • up to 1 MHzInternal soft-start and inhibitLow dropout operation: 100% duty cycle Voltage feedforward Zero load current operation Overcurrent and thermal protection VFQFPN8 3 mm x 3 mm package
  • REMARKS:-
  • refer
  • Table 7.Inductors
  • Page no 16

Typische Anwendungen

  • chargers, PLD, PLA, FPGA
  • XDSL, modems, DC-DC modules
  • optical storage, hard disk drive,printers, audio/graphic cards
  • STB, DVD, DVD recorder, car audio, LCD TV and monitors
  • LED driving

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
BauformVersion Muster
7447779115SPEC
9 Dateien WE-PD SMT-Speicherdrossel 15 1.6 2.2 70 81 19.5 7345 Robust
Artikel Nr. Daten­blatt Simu­lation
7447779115SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
BauformVersion Muster