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TI LM5117PSQE/NOPB product image
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TI LM5117PSQE/NOPBRoHS

Manufacturer
TI
MPN
LM5117PSQE/NOPB
LCSC Part #
C2658242
Packaging
WQFN-24-EP(4x4)
Customer #
Key Attributes
Wide input range synchronous buck controller with analog current monitor
Datasheetpdf iconTI LM5117PSQE/NOPB

Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerTI
PackagingWQFN-24-EP(4x4)
Operating Temperature-40℃~+125℃@(TJ)
Synchronous RectifierYes
FeaturesAdjustable current limiting;Cycle-by-cycle current limiting;Hiccup current limiting;Adjustable soft-start;Frequency synchronization;External compensation;Light load efficient mode;Overcurrent Protection
Output Current-
Number of Channels1
TopologyBuck
Frequency - Switching200kHz;480kHz
Operating Voltage5.5V~65V
Output Voltage-
FunctionStep-down type
Quiescent Current4.8mA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging250
Sales UnitPiece

Introduction

AI Translation

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.

Features

AI Translation
  • 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

Applications

AI Translation
  • Automotive infotainment
  • Industrial DC-DC motor drivers
  • Automotive USB power
  • Telecom servers
In-Stock: 240
240 In stock, ships now
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QtyUnit PriceTotal Amount
1+$ 6.1118$ 6.11
10+$ 5.4361$ 54.36
30+$ 5.0346$ 151.04
250+$ 4.6298$ 1157.45
500+$ 4.4428$ 2221.40
1,000+$ 4.3573$ 4357.30
Standard Packaging250/Full Reel
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