MaxLinear

XRP7708

Quad Channel Digital PWM Step Down Controllers

Topologie: Buck
Eingangsspannung (min.): 6.50 V
Eingangsspannung (max.): 20.00 V
Schaltfrequenz (min.): 300.00 kHz
Schaltfrequenz (max.): 1500.00 kHz
Ausgang 1: 5.10 V / 8.000 A

Erstveröffentlichung am 01.02.2010, Version 1.2.2 vom

Beschreibung

TheXRP7708 and XRP7740 arequad-output pulse-widthmodulated(PWM) step-downDCDC controllerswithabuilt-inLDOforstandby power and GPIOs. The devices provide a completepowermanagementsolutioninone IC and are fully programmable via an I2C serial interface. Independent Digital PulseWidth Modulator(DPWM) channels regulate output voltages and provide all required protection functionssuch ascurrentlimiting and over voltageprotection. Each output voltagecanbeprogrammedfrom 0.9Vto5.1V withouttheneedofanexternal voltage divider. The wide range of theprogrammable DPWM switching frequency (from 300 KHzto1.5 MHz) enablestheuserto optimize between efficiency and component size. Input voltagerangeisfrom 6.5Vto20V. An I2C businterfaceisprovidedtoprogramtheIC aswellastocommunicatewiththehost for fault reporting and handling,powerrail parametersmonitoring,etc.Thedeviceoffersacompletesolutionforsoftstartand soft-stop. The start-up delay and ramp of each PWM regulator can be independently controlled. Thedevicecanstart upapre-biasedPWM channelwithoutcausinglarge negative inductorcurrent

Merkmale

  • 4 Channel Step Down Controller
  • 3ohm/1.8ohm driver–XRP7740
  • 5ohm/1.8ohm driver–XRP7708
  • Programmable utput Voltage 0.9V-5.1V
  • Programmable 1.5MHz PWM Frequency6.5V-20V Single Input Voltage RangeUp to 6 Reconfigurable GPIO PinsFully Programmable via I2C InterfaceIndependent Digital Pulse Width
  • Modulator (DPWM) channelsComplete Monitoring and ReportingComplete Power Up/Down SequencingFull On Board Protection
  • OTP, UVLO, OCP and OVPBuilt-in 3.3V/5V LDOPowerArchitect™ Design SoftwareGreen/Halogen Free 40-pin TQFN

Artikel

  Artikel Nr. SPEC Produktserie RDC
(mΩ)
L
(µH)
Material IR
(A)
LR
(µH)
ISAT
(A)
fres
(MHz)
Version Muster
744310200 PDF WE-HCI SMT-Hochstrominduktivität 14.2 2 Superflux 6.5 1.55 9 58 SMT
744314490 PDF WE-HCI SMT-Hochstrominduktivität 14.5 4.9 Superflux 6.5 3.4 6.5 56 SMT
7443551130 PDF WE-HCI SMT-Hochstrominduktivität 1.8 1.3 WE-PERM 25 0.9 25 59 SMT