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ADI LTC7817EUHF#TRPBF

Hersteller
ADI
Herst.-Teilenr.
LTC7817EUHF#TRPBF
LCSC-Nr.
C1517606
Verp.
QFN-38-EP(5x7)
Kundennummer
Hauptmerkm.
3 Adjustable QFN-38-EP(5x7) DC DC Switching Controllers RoHS
DatenblattADI LTC7817EUHF#TRPBF
RoHS-Konformität1 Dokumente verfügbar
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Minimum: 1Vielfaches: 1Verkaufseinheit: Piece
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Stk.E-Preis(Nur als Referenz)Gesamtbetrag
1+$ 6.2496$ 6.25
200+$ 2.4187$ 483.74
500+$ 2.3338$ 1166.90
1,000+$ 2.2921$ 2292.10
Standardgehäuse2500/Full Reel
Besserer Preis bei größerer Menge?
$

Produktspezifikationen

Alle
TypBeschreibung
KategorieIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
HerstellerADI
Verp.QFN-38-EP(5x7)
Operating Temperature-40℃~+125℃@(TJ)
Synchronous RectifierYes
Output Current-
FeaturesFrequency synchronization;Light load efficient mode;Adjustable soft-start;Built-in LDO regulator;Operating status indication
Number of Channels3
TopologyBuck;Boost
Frequency - Switching3MHz
Operating Voltage4.5V~40V
Output TypeAdjustable
Switch tube (built-in/external)External
Output Voltage800mV~40V;40V
FunctionBoost;Step-down type
Quiescent Current14uA
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Beschreibung

KI-Übersetzung

The LTC7817 is a high performance triple output (buck/buck/boost) synchronous DC/DC switching regulator controller that drives all N-channel power MOSFET stages. Its constant frequency current mode architecture allows a phase-lockable switching frequency of up to 3MHz. The LTC7817 operates from a wide 4.5V to 40V input supply range. When biased from the output of the boost converter or another auxiliary supply, the LTC7817 can operate from an input supply as low as 1V after start-up. The very low no-load quiescent current extends operating run time in battery powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC7817 features a precision 0.8V reference for the bucks, 1.2V reference for the boost and a power good output indicator. The LTC7817 synchronous boost Pass-Thru capability minimizes losses in automotive start-stop applications.

Merkmale

KI-Übersetzung
  • Dual Buck Plus Single Boost Synchronous Controller
  • Low Operating IQ: 14μA (14V to 3.3V, Channel 1 On)
  • Outputs Remain in Regulation Through Cold Crank Down to 1V Input Supply Voltage
  • Wide Bias Input Voltage Range: 4.5V to 40V
  • Buck and Boost Output Voltages up to 40V
  • RSENSE or DCR Current Sensing
  • Pass-Thru Operation: 100% Duty Cycle for Boost Synchronous MOSFET
  • Programmable Fixed Frequency (100kHz to 3MHz)
  • Phase-Lockable Frequency (100kHz to 3MHz)
  • Selectable Continuous, Pulse-Skipping, or Low Ripple Burst Mode Operation at Light Loads
  • Very Low Buck Dropout Operation: 99% Duty Cycle
  • Low Shutdown IQ: 1.5μA
  • Small 38-Lead 5mm × 7mm QFN Package
  • AEC-Q100 Automotive Qualification in Process

Anwendungen

KI-Übersetzung
  • Automotive and Transportation
  • Industrial