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LM25184NGUR

Name: LM25184NGUR
Rating: 4.7 (12 reviews)

42-VIN PSR FLYBACK CONVERTER WIT

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包 WSON (NGU)-8
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Function	Step-Up/Step-Down
OutputConfiguration	Positive
Topology	Flyback
OutputType	Fixed
NumberofOutputs	1
Voltage-Input(Min)	4.5V
Voltage-Input(Max)	42V
Voltage-Output(Min/Fixed)	12V
Current-Output	1A
Frequency-Switching	12kHz ~ 350kHz
SynchronousRectifier	No
OperatingTemperature	-40°C ~ 150°C (TJ)
MountingType	Surface Mount, Wettable Flank
Package/Case	8-WDFN Exposed Pad

概述

Description

LM25184NGUR is a Texas Instruments dual-channel DC-DC buck PWM controller. It is used to generate low-voltage rails from a higher input by driving external MOSFETs (not necessarily with integrated FETs). Key points:
- Two independent PWM/current-mode control loops for two buck converters (good for multi-rail VRM designs).
- Programmable switching frequency, with options for phase synchronization and multi-phase operation.
- Protection and reliability: undervoltage lockout (UVLO), overcurrent/short-circuit protection, overvoltage protection, thermal shutdown, and soft-start/voltage tracking.
- Features suitable for CPU/GPU VRMs, memory power rails, telecom/server power supplies, and other multi-rail DC-DC applications.
- Package variant NGUR indicates the specific package and reel type used by TI.
For exact electrical specs (input range, output current, efficiency, pinout), refer to the TI datasheet for LM25184NGUR.

Features

Key features of LM25184NGUR (high-level):
- Multi-phase interleaved buck controller for DC-DC VRM applications
- Synchronous control with external N-channel MOSFETs
- Wide input voltage range suitable for VRMs
- Adjustable output voltage via feedback network
- Programmable switching frequency
- Enable input with soft-start and tracking options
- Overcurrent/current limit protection
- Overvoltage protection and undervoltage lockout
- Thermal shutdown protection
- Power-good/status signaling
- Internal current-mode control for stable regulation
- Compact NGUR package for surface-mount designs
For exact electrical specs (voltage ranges, current limits, frequency ranges, timing details), please consult the TI datasheet.

Package

HTSSOP-20 (TSSOP-20) plastic package; RoHS-compliant lead-free, with tape-and-reel production (UR suffix).

Pinout

- Pin count: 8 pins (MSOP-8 / VSSOP-8 package, suffix NGUR indicates this package).
- Function: LM25184NGUR is a step-down (buck) switching regulator controller (not an integrated regulator). It provides PWM/current-mode control to drive external MOSFETs, with features like enable, soft-start, and undervoltage lockout for DC-DC conversion.

Manufacturer

- Manufacturer: Texas Instruments (TI).
- About the company: TI is an American multinational semiconductor company that designs and manufactures analog, mixed-signal and digital integrated circuits and related products.

Application

LM25184NGUR is a multiphase synchronous buck regulator controller for high-current VRMs. Typical applications: CPU/GPU core power rails; FPGA/ASIC power supplies; memory and chipset rails; data-center/server/workstation, telecom, and industrial DC-DC power modules requiring high efficiency and tight regulation.