RT8577ZQW

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RT8577ZQW

IC LED DRIVER RGLTR PWM 20WQFN

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Specifications

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

Overview

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.

Shipping

Shipping MethodsWe

offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.


Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

The Payment term is 100% Prepaid.

Currently, we only accept the below payment methods:

1. PayPal

2. Credit/ Debit Card

3. Wire Transfer

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