IC-Hersteller Analog Devices

IC-Hersteller (96)

Analog Devices LT8335

Low IQ Boost/SEPIC/ Inverting Converter with 2A, 28V Switch

Details

TopologieAufwärtswandler
Eingangsspannung3-25 V
Schaltfrequenz1800-2200 kHz
Ausgang 128 V / 2 A
IC-RevisionA

Beschreibung

The LT®8335 is a current mode DC/DC converter capableof generating either positive or negative output voltagesusing a single feedback pin. It can be configured as aboost, SEPIC or inverting converter consuming as low as6µA of quiescent current. Low ripple Burst Mode operationmaintains high efficiency down to very low outputcurrents while keeping the output ripple below 15mV ina typical application. The internally compensated currentmode architecture results in stable operation over a widerange of input and output voltages. Integrated soft-startand frequency foldback functions are included to controlinductor current during start-up. The 2MHz operationcombined with the small 8-lead DFN package, enableslow cost, area efficient solutions

Eigenschaften

1) 3V-25V Input Voltage Range2)Ultrlow Quiescent Current and Low Ripple Burst Mode Operation:Iq=6uA3) 2A,28V Power Switch4) Positive or Negative Output Voltage Programming with a single feedback Pin5) Fixed 2MHz Switching Frequency6) Programmable Undervoltage Lockout (UVLO)Internal Compensation and Soft-Start7) Low Profile(0.75mm) 8-Lead(3mmx2mm) DFN Package

Typische Anwendungen

  • Industrial and Automotive
  • Medical Diagnostic Equipment
  • Telecom
  • Portable Electronics

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
IRP,40K
(A)
ISAT1
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
MontageartL1
(µH)
L2
(µH)
IR 1
(A)
IR 2
(A)
ISAT 1
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres
(MHz)
Typ Muster
744373240047SPEC
8 Dateien WE-LHMI SMT Speicherdrossel 0.47 8.7 10.4 19.6 14 SMT 122
744877001SPEC
8 Dateien WE-DD SMT-Doppeldrossel 1.8 4.7 6.5 34 1.8 1.8 4.7 4.7 6.5 0.025 0.025 0.034 0.034 58 Gerade
74404054033SPEC
8 Dateien WE-LQS SMT-Speicherdrossel 3.3 3.4 4.3 24 SMT 48
74404063033SPEC
8 Dateien WE-LQS SMT-Speicherdrossel 3.3 3.48 4.5 25 SMT 59
750316134SPEC
Power Transformer
Artikel Nr. Daten­blatt Simu­lation
744373240047SPEC
744877001SPEC
74404054033SPEC
74404063033SPEC
750316134SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
IRP,40K
(A)
ISAT1
(A)
ISAT,30%
(A)
RDC max.
(mΩ)
MontageartL1
(µH)
L2
(µH)
IR 1
(A)
IR 2
(A)
ISAT 1
(A)
RDC1 typ
(Ω)
RDC2 typ
(Ω)
RDC1 max
(Ω)
RDC2 max
(Ω)
fres
(MHz)
Typ Muster