Datasheet > iW3626

iW3626

更新时间： 2023-12-20 18:44:03

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
6页	478K
描述
Single-Stage, 10W Offline SSL LED Driver with High Power Factor and Low Ripple

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iW3626 数据手册

iW3626

Oﬀ-Line Digital Power Controller for LED Driver

with High-Power Factor and Low-Ripple Current

1 Description

The iW3626 is a high performance, single-stage AC/DC power controller for LED luminaires with power factor (PF)

correction. The device uses digital control technology to build unique hybrid mode control in PWM ﬂyback power

supplies to achieve high power factor meanwhile minimizing LED current ripple. This distinctive control approach

enables the capability for users to make trade-oﬀs between PF and LED current ripple in a single-stage design. It can

achieve excellent LED current regulation over line and load variation, without the need for secondary feedback circuit.

The built-in temperature sensor along with control logic can automatically adjust output current in real-time without

visible ﬂicker during the process. The iW3626 operates in quasi-resonant mode to provide high eﬃciency along with a

number of key built-in protection features while minimizing the external component count, simplifying EMI design, and

lowering the total bill of material cost. It also eliminates the need for loop compensation components while maintaining

stability over all operating conditions. The built-in power limit function enables optimized transformer design in

universal oﬀ-line applications with input voltage from 90V_ACto 277V_AC.

Dialog’s innovative proprietary technology maximizes the iW3626 performance in a tiny SOT-23 package. The iW3626

oﬀers two multi-function pins allowing users to conﬁgure PF and OTP as required with no cost or size impact, thereby

providing design ﬂexibility. The active start-up scheme enables the shortest possible start-up time without sacriﬁcing

active eﬃciency.

2 Features

● Supports wide range of LED numbers with tight current

● All-in-one non-dimmable low-cost oﬀ-line LED driver

regulation

(isolated and non-isolated applications)

● Stabilized LED current-ripple control without visible

● Supports universal input voltage range (90V_ACto

shimmer or ﬂicker

277V_AC) and output power up to 10W

● Active start-up scheme enables fastest possible start-

● High power factor (PF) with low current-ripple control

technology

● 72kHz maximum PWM switching frequency with quasi-

● User-conﬁgurable power factor setting (>0.7 to >0.9)

resonant operation

● User-conﬁgurable over-temperature protection (OTP)

● Dynamic base current control to drive low-cost BJT

with temperature-current derating

EZ-EMI^®design enhances manufacturability

● Very tight LED current regulation (±5%) across line

and load, and within primary inductance tolerance

(±20%)

●

● Built-in single-point fault protection features: LED

open-/short-circuit protection and over-current

protection

● Isolated design without opto-coupler

● No audible noise over entire operating range

3 Applications

● Solid-state LED lighting

● LED lighting ballast

Product Summary

Rev. 1.5

06-Feb-2022

1 of 6

www.renesas.com

12 3 4 5 6

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