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IC-Hersteller MaxLinear

IC-Hersteller (79)

MaxLinear XR76205

5A 40V Synchronous Step Down COT Regulator PowerBlox™

Details

Topologie Abwärtswandler
Eingangsspannung 24 V
Schaltfrequenz 100-800 kHz
Ausgang 1 3.3 V / 5 A
IC-Revision 1A

Beschreibung

The XR76205 is a synchronous step-down regulator combining the controller, drivers, bootstrap diode and MOSFETs in a single package for point-of-load supplies. The XR76205 has a load current rating of 5A. A wide 3.0V to 40V input voltage range allows for single supply operation 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 XR76205 provides extremely fast line and load transient response using ceramic output capacitors. It requires no loop compensation, simplifying circuit implementation and reducing overall component count. The control loop also provides 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 XR76205 is available in a RoHS-compliant, green/halogen-free space-saving QFN 5x5mm package.

Eigenschaften

  • Controller, drivers, bootstrap diode and MOSFETs integrated in one package
  • 5A step down regulator
  • Wide 5.0V to 40V input voltage range
  • ◦3V to 40V PVIN with 5V bias
  • ◦4.5 to 5.5V single supply operation
  • ◦≥0.6V adjustable output voltage
  • Proprietary Constant On-Time Control ◦No loop compensation required
  • ◦Stable ceramic output capacitor operation
  • ◦Programmable 200ns to 2µs on-time
  • ◦Constant 100kHz to 800kHz frequency
  • Selectable CCM or CCM/DCM
  • ◦CCM/DCM for high efficiency at light-load
  • ◦CCM for constant frequency at light-load
  • Programmable hiccup current limit with thermal compensation
  • Precision enable and power good flag
  • Programmable soft-start
  • 30-pin 5x5mm QFN package
  • Pin compatible 3A regulator, XR76203
  • Pin compatible 8A regulator, XR76208

Typische Anwendungen

  • Base stations, switches/routers, and servers
  • FPGA, DSP, and processor supplies
  • Power supply modules
  • Distributed power architecture
  • Point-of-load converters

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Downloads Produktserie L
(µH)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Reihen Gender Typ IR
(A)
Verpackung Muster
74437368033
STE ALT EAG CAD LTS PSP SPE IGS CAD WE-LHMI SMT Speicherdrossel 3.3 23 10.8 11.8 22 SMT 8
74437368047
STE ALT EAG CAD LTS PSP SPE IGS CAD WE-LHMI SMT Speicherdrossel 4.7 19 15 15.5 16 SMT 7
61300111121
IGE STE 3D ALT EAG CAD WR-PHD 2.54 mm THT Pin Header THT Single Pin Header Gerade 3 Beutel
Artikel Nr. Daten­blatt
74437368033
74437368047
61300111121
Muster
Artikel Nr. Daten­blatt Downloads Produktserie L
(µH)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
Montageart Reihen Gender Typ IR
(A)
Verpackung Muster