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LM5017MR/NOPB

Name: LM5017MR/NOPB
Rating: 4.7 (12 reviews)

IC REG BUCK ADJ 600MA 8SOPWR

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包 HSOIC-8
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規格

Package	Tube
ProductStatus	Active
Function	Step-Down
OutputConfiguration	Positive
Topology	Buck
OutputType	Adjustable
NumberofOutputs	1
Voltage-Input(Min)	7.5V
Voltage-Input(Max)	100V
Voltage-Output(Min/Fixed)	1.225V
Voltage-Output(Max)	90V
Current-Output	600mA
Frequency-Switching	Adj to 1MHz
SynchronousRectifier	Yes
OperatingTemperature	-40°C ~ 125°C (TJ)
MountingType	Surface Mount
Package/Case	8-PowerSOIC (0.154, 3.90mm Width)

概述

Description

LM5017MR/NOPB is TI’s high‑voltage buck regulator (part of the LM50xx Simple Switcher family) with an integrated high‑side switch and a PWM controller. It lets you convert a wide input voltage to a stable lower output with relatively few external parts. Key features include wide input range, current‑mode control, soft start, enable pin, and built‑in protections (overcurrent, thermal shutdown, UVLO). The MR suffix indicates the device package type, and NOPB means Pb‑free (no lead) packaging. Typical applications are compact DC‑DC power supplies for automotive, industrial, and telecom equipment, where high input voltage or BOM simplification is beneficial. External components you’ll need include an inductor, input/output capacitors, a feedback divider, and a catch diode for non‑synchronous designs (or a synchronous rectifier, if used). For details on pinout, electrical specs, and reference designs, see the LM5017MR/NOPB datasheet.

Features

Key features of LM5017MR/NOPB (highlights):
- 600-V N-channel MOSFET integrated for buck regulation (no external FET required)
- Current-mode PWM control for fast transient response
- Wide input voltage range suitable for automotive/industrial applications
- External feedback for adjustable output voltage
- Programmable switching frequency via RT resistor (design flexibility)
- Soft-start to limit inrush and improve output ramp
- Enable input with undervoltage lockout
- Protective features: overcurrent/short-circuit protection, overvoltage protection, thermal shutdown
- High efficiency with minimal external components
- 8-pin package (MSOP-8) with lead-free NOPB option
Note: For exact electrical specs (voltage range, switching frequency range, current capability), please consult the TI datasheet.

Package

LM5017MR/NOPB is in an 8-pin MSOP package (MSOP-8), RoHS-compliant Pb-free.

Pinout

- Pin count: 8 pins (MSOP-8 package; LM5017MR/NOPB).
- Main function: 60-V buck regulator controller with integrated high-side MOSFET (switching regulator).
- Pin functions (MSOP-8):
- VIN: Input supply (6–60 V).
- GND: Ground reference.
- SW: Switch node to inductor/loads (drives the internal MOSFET).
- BOOT: Bootstrap capacitor drive for high-side gate.
- EN: Enable input (turns device on/off).
- FB: Feedback input for output regulation.
- IS: Current-sense / current-limit input.
- VCC (or VCC/VC): Internal regulator supply for control circuitry.

Manufacturer

Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog and embedded processing integrated circuits. It is a global leader in power management and analog/embedded processing solutions.

Application

- Wide-input, high-voltage buck regulator (up to 100 V) for efficient DC-DC conversion in power supplies.
- Point-of-load regulation for microprocessors, FPGAs, and DSPs in telecom, data centers, and industrial equipment.
- Automotive, off-line, and battery-powered systems; distributed power architectures needing compact, rugged buck converters.

Equivalent

There isn’t a direct, one-to-one equivalent to the LM5017MR/NOPB. It’s a 60 V, current‑mode buck controller requiring an external MOSFET. For replacements, use a similar 60 V buck controller with external FET and comparable specs. Within TI, LM5018/LM5019 are related; for other vendors, search for 60 V high‑voltage buck controllers and verify pinout, switching frequency, and current rating against your design.