MaxLinear

XRP7675

3A 18V Synchronous PFM/PWM Step-Down Regulator

Topologie: Buck
Eingangsspannung (min.): 12.00 V
Schaltfrequenz (min.): 280.00 kHz
Schaltfrequenz (max.): 400.00 kHz
Ausgang 1: 3.30 V / 3.000 A
Ausgang 2: 2.50 V / 3.000 A
Ausgang 3: 5.00 V / 3.000 A

Erstveröffentlichung am 28.02.2013, Version 1.0.0 vom

Beschreibung

The XRP7675 is a 3A capable synchronous current-mode PWM step down (buck) voltage regulator with improved light current load efficiency. A wide 4.5V to 18V input voltage range allows for single supply operations from industry standard 5V and 12V power rails. With a 340kHz constant operating frequency and integrated high and low-side 100mΩ/100mΩ MOSFETs, the XRP7675 reduces the overall component count and solution footprint. Current-mode control provides fast transient response and cycle-by-cycle OCP. An adjustable soft-start prevents inrush current at turn-on, and in shutdown mode the supply current drops to 0.1µA. At light current loads, the XRP7675 operates in Discontinuous Conduction Mode (DCM) and is complemented by a pulse frequency modulation mode (PFM) to provide excellent conversion efficiency. Built-in output over-voltage (open load), over temperature, cycle-by-cycle over-current, under-voltage lockout (UVLO) and hiccup mode short-circuit protection insures safe operation under abnormal operating conditions. The XRP7675 is offered in a RoHS compliant, "green"/halogen free 8-pin Exposed Pad SOIC package.

Merkmale

  • 3A Continuous Output Current
  • 4.5V to 18V Wide Input Voltage ◦0.925V to 16V Adjustable Output Voltage
  • ◦2% Accuracy
  • PWM Current Mode Control ◦340kHz Constant Operations
  • ◦Up to 95% Efficiency
  • Light Load Efficiency
  • Programmable Soft-Start and Enable Function
  • Built-in Thermal, Over Current, UVLO and Output Over Voltage Protections
  • Pin/Function Upgrade to Exar XRP7665 and MPS MP1484/2307
  • RoHS Compliant, "Green"/Halogen Free 8-Pin SOIC Package

Artikel

  Artikel Nr. SPEC Produktserie RDC
(mΩ)
L
(µH)
Material IR
(A)
LR
(µH)
ISAT
(A)
fres
(MHz)
Version Muster
744314101 PDF WE-HCI SMT-Hochstrominduktivität 33 10 Superflux 3.5 7.5 4 40 SMT

Weitere Anwendungen und Artikel von Würth Elektronik zu diesem IC

  • XRP7675
    Topologie: Buck, Eingangsspannung (min.): 12.00 V, Schaltfrequenz (min.): 280.00 kHz, Schaltfrequenz (max.): 400.00 kHz, Ausgang 1: 1.80 V / 3.000 A, Ausgang 2: 1.50 V / 3.000 A
  • XRP7675
    Topologie: Buck, Eingangsspannung (min.): 12.00 V, Schaltfrequenz (min.): 280.00 kHz, Schaltfrequenz (max.): 400.00 kHz, Ausgang 1: 1.20 V / 3.000 A
  • XRP7675
    Topologie: Buck, Eingangsspannung (min.): 5.00 V, Schaltfrequenz (min.): 280.00 kHz, Schaltfrequenz (max.): 400.00 kHz, Ausgang 1: 1.20 V / 3.000 A, Ausgang 2: 2.50 V / 3.000 A, Ausgang 3: 3.30 V / 3.000 A, : 1.80 V / 3.000 A, Ausgang5: 1.50 V / 3.000 A