IC-Hersteller Analog Devices

IC-Hersteller (96)

Analog Devices LT3748 | Demoboard DC1557A

100V Isolated Flyback Controller

Details

TopologieSperrwandler
Eingangsspannung10-100 V
Schaltfrequenz80-250 kHz
Ausgang 112 V / 3.8 A
IC-RevisionLT3748EMS

Beschreibung

The LT®3748 is a switching regulator controller specificallydesigned for the isolated flyback topology and capable ofhigh power. It drives a low side external N-channel powerMOSFET from an internally regulated 7V supply. No thirdwinding or opto-isolator is required for regulation as thepart senses the isolated output voltage directly from theprimary-side flyback waveform.

Eigenschaften

  • 5V to 100V Input Voltage Range
  • 1.9A Average Gate Drive Source and Sink Current
  • Boundary Mode Operation
  • No Transformer Third Winding or Opto-Isolator Required for Regulation
  • Primary-Side Winding Feedback Load Regulation
  • VOUT Set with Two External Resistors
  • INTVCC Pin for Control of Gate Driver Voltage
  • Programmable Soft Start
  • Programmable Undervoltage Lockout
  • Available in MSOP Package

Typische Anwendungen

  • High Power Automotive Supplies
  • Isolated Industrial Power Supplies
  • Telecom and Industrial
  • Military and High Temperature Applications

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieVinVOut1
(V)
IOut1
(A)
Vaux
(V)
L
(µH)
nISAT
(A)
LS
(µH)
VT
(V (AC))
BauformIC-Referenz Muster
750311590SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 20 - 48 V (DC) 12 3.8 10 8 2:1:1 18 0.4 1500 EFD25 LT3748
750311607SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 30 - 75 V (DC) 12 2.5 10 14 2.5:1:0.83 9.5 0.5 1500 EFD20 LT3748
750311594SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 30 - 75 V (DC) 12 3.8 10 15 2.33:1:0.83 18 0.55 1500 EFD25 LT3748
750311424SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 36 V (DC) 12 1 8 100 3:1:0.667 2.4 1.5 1500 EP13 LT3748
750311456SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 36 V (DC) 12 1 8 100 3:1:0.667 2.4 1.5 2500 EP13 LT3748
750311439SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 37 - 57 V (DC) 12 2.1 12 37 2:1:1.1 2.8 0.75 1500 EP13 LT3575 & LT3748
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieVinVOut1
(V)
IOut1
(A)
Vaux
(V)
L
(µH)
nISAT
(A)
LS
(µH)
VT
(V (AC))
BauformIC-Referenz Muster