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RT8577ZQW

Name: RT8577ZQW
Rating: 4.7 (12 reviews)

IC LED DRIVER RGLTR PWM 20WQFN

製造商
製造商。部分 #RT8577ZQW
包 20-WQFN Exposed Pad
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Type	DC DC Regulator
Topology	Step-Up (Boost)
InternalSwitch(s)	Yes
NumberofOutputs	4
Voltage-Supply(Min)	9V
Voltage-Supply(Max)	28V
Voltage-Output	45V
Frequency	100kHz ~ 1MHz
Dimming	PWM
Applications	Backlight
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	20-WQFN Exposed Pad

概述

Description

RT8577ZQW is a RichTek power-management IC, specifically a synchronous buck (step-down) DC-DC regulator. It’s designed to convert a higher input voltage to a stable, programmable lower output for digital logic, packaged in the ZQW package. Core features typically include an integrated high-side and low-side MOSFET pair, adjustable output via external feedback resistors, a configurable switching frequency, and protections such as overcurrent, overtemperature, UVLO, and short-circuit protection. It supports fast transient response and often has low quiescent current for efficiency in light-load conditions. Applications include CPU/mGPU rails, FPGA logic supplies, memory regulators, and other system power rails in consumer electronics. To implement RT8577ZQW, check the datasheet for exact pinout, recommended external components (inductor, input/output capacitors, feedback network), soft-start behavior, enable logic, and layout guidelines. Want a precise spec summary or the official datasheet link?

Features

RT8577ZQW seems to be a RichTek RT857x-series regulator. Exact features vary by vendor, but typical for a dual buck regulator include:
- Dual synchronous buck converters for high efficiency
- Programmable or fixed output voltages via feedback
- Enable/Shutdown control
- Soft-start to limit inrush
- Switching frequency selection or fixed frequency
- Protections: overcurrent/short-circuit, thermal shutdown, UVLO/UVP
- Light-load/eco mode options for better efficiency at light loads
- Status/Power‑good output
- Phase sharing or independent channels (depends on variant)
- Small package (often QFN/DFN) with thermal considerations
For precise specs (input range, max current, pinout, suggested external components), please refer to the exact datasheet from the vendor.

Package

QFN package, 4×4 mm, 16-pin.

Pinout

Pin count: 16 pins (QFN package, suffix ZQW).
Function: Dual synchronous step-down DC-DC converter controller/driver (often with integrated high- and low-side MOSFETs) used for CPU core/MVR regulation; provides two switching outputs, programmable frequency, enable, soft-start, current/overvoltage protection, and power-good signaling.

Manufacturer

- Manufacturer: Richtek Technology Corporation (Richtek).
- What kind of company: A Taiwan-based fabless semiconductor company that designs and markets power-management ICs (analog/mixed-signal), including DC-DC converters, voltage regulators, PMICs, and related devices for consumer electronics and computing.

Application

RT8577ZQW is a Richtek power-management IC used as a high-efficiency DC-DC buck converter and LED driver. Typical applications: portable devices and consumer electronics needing power regulation and LED backlighting, such as notebooks/tablets/phones, LCD backlight assemblies, and auxiliary rails on motherboards and chargers.

Equivalent

I need the device function and key specs to give accurate substitutes. RT8577ZQW (Richtek) could be a regulator/driver in different topologies. Please provide:
- VIN, VOUT, ILOAD
- Topology (buck/boost/LED driver)
- Package
With these, I can suggest exact cross‑references (TI, Onsemi, ADI, etc.) or point you to distributor cross-reference tools.