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TI LM5117PSQ/NOPB

Hersteller
TI
Herst.-Teilenr.
LM5117PSQ/NOPB
LCSC-Nr.
C1848489
Verp.
WQFN-24-EP(4x4)
Kundennummer
Hauptmerkm.
Wide input range synchronous buck controller with analog current monitor
Datenblattpdf iconTI LM5117PSQ/NOPB
RoHS-Konformität2 Dokumente verfügbar
Vorrätig: 5
5 Ab Lager, sofort versandfertig
Minimum: 1Vielfaches: 1Verkaufseinheit: Piece
Zur BOM-Liste hinzufügen
Stk.E-PreisGesamtbetrag
1+$ 6.9661$ 6.97
10+$ 6.2106$ 62.11
30+$ 5.726$ 171.78
100+$ 5.2593$ 525.93
Standardgehäuse1000/Full Reel
Besserer Preis bei größerer Menge?
$

Produktspezifikationen

Alle
TypBeschreibung
KategorieIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
HerstellerTI
Verp.WQFN-24-EP(4x4)
Synchronous RectifierYes
FeaturesAdjustable current limiting;Cycle-by-cycle current limiting;Hiccup current limiting;Adjustable soft-start;Frequency synchronization;External compensation;Light load efficient mode
Number of Channels1
TopologyBuck
Operating Voltage5.5V~65V
Switch tube (built-in/external)External
Output Voltage-
Operating Temperature-40℃~+125℃@(TJ)
Output Current-
Frequency - Switching200kHz
Output TypeAdjustable
FunctionStep-down type
Quiescent Current4.8mA
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Beschreibung

KI-Übersetzung

LM5117 is a synchronous buck controller for step-down regulator applications powered by high-voltage or wide-range input supplies. The control method is based on current mode control using an emulated current ramp. Current mode control provides internal line feed-forward, cycle-by-cycle current limiting, and simplified loop compensation. The use of an emulated current ramp reduces the noise sensitivity of the PWM circuit, enabling reliable control of the extremely small duty cycles required in high input voltage applications.

The operating frequency is programmable from 50kHz to 750kHz. The LM5117 uses adaptive dead-time control to drive external high-side and low-side NMOS power switches. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency under light load conditions. With a high-voltage bias regulator, the device can utilize an external bias supply to further improve efficiency. The LM5117 features a unique analog telemetry function that provides average output current information. Additional features include: thermal shutdown, frequency synchronization, discontinuous mode current limiting, and adjustable line undervoltage lockout.

Merkmale

KI-Übersetzung
  • Qualified for automotive applications: LM5117-Q1
  • AEC-Q100 qualified with the following results: Device Temperature Grade 1: –40°C to 125°C ambient operating temperature range
  • Emulated peak current mode control
  • Wide operating voltage range: 5.5V to 65V
  • Robust 3.3A peak gate drive
  • Adaptive dead-time output driver control
  • Free-running or synchronizable clock frequency up to 750kHz
  • Optional diode emulation mode
  • Programmable output (0.8V reference voltage)
  • 1.5% accurate reference voltage
  • Analog current monitor
  • Programmable current limit
  • Hiccup mode overcurrent protection
  • Programmable soft-start and tracking
  • Programmable line undervoltage lockout
  • Programmable switchover to external bias supply
  • Thermal shutdown

Anwendungen

KI-Übersetzung
  • Automotive infotainment
  • Industrial DC-DC motor drivers
  • Automotive USB power
  • Telecom servers