IC-Hersteller Analog Devices

IC-Hersteller (95)

Analog Devices LT3575

Isolated Flyback Converter without an Opto-Coupler

Details

TopologieSperrwandler
Eingangsspannung3-40 V
Ausgang 112 V / 0.8 A
Ausgang 25 V / 1 A
Ausgang 312 V / 0.3 A
Ausgang 412 V / 0.5 A
Ausgang 55 V / 2 A
Ausgang 63.3 V / 1.5 A

Beschreibung

The LT3575 is a monolithic switching regulator specifically designed for the isolated flyback topology. No third winding or optoisolator is required for regulation. The part senses the isolated output voltage directly from the primary side flyback waveform. A 2.5A, 60V NPN power switch is integrated along with all control logic into a 16-lead TSSOP package.

The LT3575 operates with input supply voltages from 3V to 40V, and can deliver output power up to 14W with no external power switch.The LT3575 utilizes boundary mode operation to provide a small magnetic solution with improved load regulation.

The output voltage is easily set with two external resistors and the transformer turns ratio. Off the shelf transformers are available for many applications.

Eigenschaften

  • 3V to 40V Input Voltage Range
  • 2.5A, 60V Integrated NPN Power Switch
  • Boundary Mode Operation
  • No Transformer Third Winding orOptoisolator Required for Regulation
  • Improved Primary-Side Winding Feedback Load Regulation
  • VOUT Set with Two External Resistors
  • BIAS Pin for Internal Bias Supply and Power NPN Driver
  • Programmable Soft-Start
  • Programmable Power Switch Current Limit
  • Thermally Enhanced 16-Lead TSSOP

Remarks:

  • See page num 11 for more inductor values.

Typische Anwendungen

  • Medical Isolated Power Supplies
  • Automotive
  • Industrial

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktseriePinsAnwendungPCB/Kabel/PanelModularityTypWire SectionλDom typ.
(nm)
FarbeλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chiptechnologie50% typ.
(°)
Interface typGenderMontageartArbeitsspannung
(V (AC))
VerpackungVinVOut1
(V)
IOut1
(A)
Vaux
(V)
L
(µH)
nIR 1
(A)
ISAT
(A)
LS
(µH)
VT
(V (AC))
BauformIC-Referenz Muster
691102710002SPEC
6 Dateien WR-TBL Series 102 - 5.00 mm Horizontal Entry Modular 2 Wire Protector PCB Ja Horizontal 22 to 14 (AWG) 0.75 to 1.5 (mm²) THT 250 Karton
692622030100SPEC
6 Dateien WR-COM Micro USB 3.0 Type B Horizontal SMT 10 Micro USB 3.0 Horizontal Type B Receptacle SMT 30 Tape and Reel 1.8
750310562SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 18 - 30 V (DC) 12 0.8 12 25 2:1:1 2.8 0.5 1500 EP10 LT3573 & LT3575
750310563SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 18 - 30 V (DC) 12 0.8 6 25 1:1:0.5 2.8 0.5 1500 EP10 LT3573 & LT3575
750310471SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 9 - 30 V (DC) 5 2 5 25 3:1:1 2.6 0.43 1500 EP10 LT3573 & LT3575
750311675SPEC
7 Dateien WE-FB Sperrwandlerübertrager geeignet für LT3573/ LT3574/ LT3575/ LT3748 9 - 30 V (DC) 5 2 5 25 3:1:1 2.5 0.25 1500 EP10 LT3573 & LT3575 & LT3748
150060BS75000SPEC
25 Dateien WL-SMCW SMT Mono-color Chip LED Waterclear 470 Blau 465 145 3.2 InGaN 140 SMT Tape and Reel 0603
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktseriePinsAnwendungPCB/Kabel/PanelModularityTypWire SectionλDom typ.
(nm)
FarbeλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chiptechnologie50% typ.
(°)
Interface typGenderMontageartArbeitsspannung
(V (AC))
VerpackungVinVOut1
(V)
IOut1
(A)
Vaux
(V)
L
(µH)
nIR 1
(A)
ISAT
(A)
LS
(µH)
VT
(V (AC))
BauformIC-Referenz Muster