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IC-Hersteller MaxLinear

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MaxLinear XR76205 | Demoboard XR76205EVB

40V, 3/5/8A Synchronous Step Down COT Regulator

Details

Topologie Abwärtswandler
Eingangsspannung 24 V
Ausgang 1 3.3 V / 5 A
IC-Revision 1A

Beschreibung

The XR76203, XR76205 and XR76208 aresynchronous step-down regulators combining the controller, drivers, bootstrap diode and MOSFETs in a single package for point-of-load supplies. The XR76203, XR76205 and XR76208 have load current ratings of 3A, 5A and 8A respectively. A wide5V to 40V input voltage range allows for single supplyoperation from industry standard 24V ±10%, 18V- 36V, and rectified 18VAC and 24VAC rails. With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XR76203, XR76205 and XR76208 provide extremely fast line and load transient response using ceramic output capacitors. They require no loop compensation, simplifying circuit implementation and reducing overall component count. The control loop alsoprovides 0.07% load and 0.15% line regulation and maintains constant operating frequency. A selectable power saving mode allows the user to operate in discontinuous conduction mode (DCM) at light current loads thereby significantly increasing the converter efficiency.A host of protection features, including over-current, over-temperature, short-circuit and UVLO, helps achieve safe operation under abnormal operating conditions.The XR76203/5/8 are available in a RoHS-compliant, green/halogen-free space-saving QFN 5x5mm package.

Eigenschaften

  • Controller, drivers, bootstrap diode, MOSFETsintegrated in one package
  • 3/5/8A Step Down Regulator
  • Wide 5V to 40V Input Voltage Range
  • 0.6V Adjustable Output Voltage
  • Proprietary Constant On-Time Control
  • No Loop Compensation Required
  • Ceramic Output Cap. Stable operation
  • Programmable 200ns-2μs On-Time
  • Constant 400kHz-600kHz freq.
  • Selectable CCM or CCM/DCM Operation
  • 30-pin 5x5mm QFN package

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Downloads Produktserie P
(mm)
Blade Design L
(µH)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Pins Reihen Gender Typ IR
(A)
Verpackung Muster
61300111121
IGE STE 3D ALT EAG CAD WR-PHD 2.54 mm THT Pin Header 2.54 THT 1 Single Pin Header Gerade 3 Beutel
61300311121
IGE STE 3D ALT EAG CAD WR-PHD 2.54 mm THT Pin Header 2.54 THT 3 Single Pin Header Gerade 3 Beutel
7471287
STE ALT EAG IGS CAD WA-MTAB Mounting Tabs 5.08 6.35 mm Männlich Vertikal Beutel
74437368033
STE ALT EAG CAD LTS PSP SPE IGS CAD WE-LHMI SMT Speicherdrossel 3.3 23 10.8 11.8 22 SMT 8
Artikel Nr. Daten­blatt
61300111121
61300311121
7471287
74437368033
Muster
Artikel Nr. Daten­blatt Downloads Produktserie P
(mm)
Blade Design L
(µH)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Pins Reihen Gender Typ IR
(A)
Verpackung Muster