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IC-Hersteller Sky Works

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Sky Works SKY87608

SKY87608: 28 V, 3 A Non-Synchronous Step-Down Converter

Details

TopologieAbwärtswandler
Eingangsspannung4.5-28 V
Ausgang 13.3 V

Beschreibung

The SKY87608 is a step-down DC-DC converter that operates with a wide 4.5 V to 28 V input voltage range and regulates the output voltage as low as 0.9 V while supplying up to 3 A to the output. The 450 kHz switching frequency allows for an efficient step-down regulator design. The SKY87608 uses an adjustable output voltage that can be set from 12% to 80% of the input voltage by an external resistive voltage divider. Internal soft-start prevents excessive inrush current without requiring an external capacitor. The SKY87608 includes input under-voltage and overcurrent protection to prevent damage in the event of a fault condition. Thermal overload protection prevents damage to the SKY87608 or circuit board when operating beyond its thermal capability. The SKY87608 is available in a small Pb-free, 8-pin, SOP-8L-EP package. A typical application circuit is shown in Figure 1. The pin configuration is shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1

Eigenschaften

  • 4.5 V to 28 V input voltage
  • Up to 97% efficiency
  • Internal 180 mΩ high-side N-channel MOSFET
  • Internal 12 Ω refresh MOSFET
  • Up to 3 A load current
  • Adjustable output voltage (0.9 V to 0.8 × VIN)
  • Fixed 450 kHz switching frequency
  • 4 ms soft-start period
  • External compensation
  • Less than 1 μA shutdown current
  • Current limit protection
  • Standard 8-pin SOP-8L package (MSL1, 260 °C per JEDEC-J-STD-020) with exposed pad

Typische Anwendungen

  • Industrial applications
  • Distributed power systems
  • Set-top boxes

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
BauformVersion Muster
7447715004SPEC
9 Dateien WE-PD SMT-Speicherdrossel 4.7 5.2 6.3 13.5 16 37 1245 Standard
Artikel Nr. Daten­blatt Simu­lation
7447715004SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
BauformVersion Muster