IR3447MTRPBF

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IR3447MTRPBF

IC REG BUCK ADJUSTABLE 25A PQFN

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規格

Package Tape & Reel (TR),Cut Tape (CT)
Series SupIRBuck®
ProductStatus Obsolete
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 5V
Voltage-Input(Max) 21V
Voltage-Output(Min/Fixed) 0.6V
Voltage-Output(Max) 18.06V
Current-Output 25A
Frequency-Switching 300kHz ~ 1.5MHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 35-PowerVQFN

概述

Description

IR3447MTRPBF is a high-voltage PWM controller IC from International Rectifier (now Infineon) used in off-line switch-mode power supplies and adapters. It drives an external power MOSFET in flyback or similar topologies, starting from rectified mains and regulating output via feedback.
Key features (typical):
- High-voltage startup and operation
- Current-mode control with a sense input
- Soft-start and fixed or programmable switching frequency
- Overcurrent/short-circuit protection
- Overvoltage protection, undervoltage lockout
- Thermal shutdown
Package note:
- MTRPBF denotes Tape & Reel, Pb-free packaging.
Typical uses:
- AC-DC wall adapters, small power supplies, LED drivers, and other SMPS applications.

Package

I don’t have live datasheet access, so I can’t reliably state the IR3447MTRPBF package from memory. Please provide the datasheet or allow me to look it up and I’ll return the exact package type.

Manufacturer

Manufacturer: International Rectifier (IR), a brand now owned by Infineon Technologies.
What kind of company: Infineon (formerly International Rectifier as the IR brand) is a global semiconductor company that designs and manufactures power semiconductors, MOSFETs, power-management ICs and related solutions for automotive, industrial, consumer and communications markets.

Application

IR3447MTRPBF is a primary-side PWM controller for flyback offline switched‑mode power supplies. Typical applications include:
- Offline AC‑DC adapters and battery chargers
- Constant‑current LED driver circuits
- Small to medium telecom and industrial switch‑mode PSUs
- Any flyback-based SMPS needing current‑mode control, startup, current limit, and protection features.

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運費參攷（DHL/FedEx）:

動態主要裝載: 運費從25美元到45美元（0.5公斤）不等，預計交貨時間為2-5個工作日。

聯邦快遞: 運費從25美元到40美元（0.5公斤）不等，預計交貨時間為3-7個工作日。

不斷電供應系統: 運費從25美元到45美元（0.5公斤）不等，預計交貨時間為3-7個工作日。

三硝基甲苯: 運費從25美元到65美元（0.5公斤）不等，預計交貨時間為3-7個工作日。

增强型短消息: 運費從30美元到50美元（0.5公斤）不等，預計交貨時間為7-15個工作日。

掛號: 運費為2-4美元（0.1公斤），預計交貨時間為5-20個工作日。

支付

Payment Methods

付款條件為100%預付。

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1. 貝寶

2. 信用卡/借記卡

3. 電匯

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