Datasheet > HT7L5600

HT7L5600

更新时间： 2024-04-09 19:00:38

品牌	Logo	应用领域
台湾合泰/盛群 - HOLTEK		功率因数校正
页数	文件大小	规格书
11页	748K
描述
Primary side regulation off line LED driver with active PFC

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HT7L5600 数据手册

HT7L5600

Primary Side Regulation Off Line

LED Driver with Active PFC

Features

General Description

• Small outline 6-pin SOT23 package

The HT7L5600 is a single-stage, isolated, primary-

side offline LED lighting controller that achieves a

• Primary-side current sensing and regulation with-

out an opto-coupler

high power factor. Power control is implemented by

controlling an external MOSFET and accurate LED

constant current regulation from the primary-side

information. This can signiﬁcantly simplify the LED

lighting system design by eliminating the secondary-

side feedback components and the normally required

opto-coupler. The extremely low start-up current and

quiescent current reduces the total power consump-

tion to provide a high efﬁciency solution for lighting

applications.

• Wide AC input range – from 85V_ACto 265V

• High Power Factor of >0.9 without additional

circuitry

• Accurate constant current (< ±3%)

• Low start-up current which reduces power dissipation

• Full protection functions for enhanced safety:

♦

Gate driver output voltage clamp

♦

VCC over voltage protection – VCC OVP

The HT7L5600 provides several protection functions,

which include VCC Under Voltage Lockout (UVLO),

Over Current Protection (OCP), Output LED String

Open Protection, Output LED String Short Protection,

VCC Over Voltage Protection (OVP) and Leading-

Edge Blanking (LEB) for current sensing. Additionally

♦

VCC under-voltage lockout with hysteresis –

VCC UVLO

♦

Output LED string over current protection

♦

Output LED string short / open protection

♦

On-chip over temperature protection – OTP

and to ensure system reliability, the device includes

fully integrated thermal protection function. To protect

the external power MOSFET from being damaged

by an over voltage, the device DRV pin voltage is

clamped to about 16V.

Applications

• General illumination

• E26/27, T5/T8 LED Lamp

• Other LED Lighting Applications

The high level of functional integration minimises the

external component count giving major advantages

in terms of cost and circuit board area. The device is

supplied in a 6-pin SOT23 package.

Application Circuits

ACIN

V_OUT+

V_OUT-

COMP

GND

ZCD

VCC

DRV

HT7L5600

Rev. 1.30

September 26, 2018

12 3 4 5 6 7...11

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