HVLED805TR datasheet(1/29 Pages) STMICROELECTRONICS

Il numero della parte	HVLED805TR

Spiegazioni elettronici	Off-line LED driver with primary-sensing

PDF	29 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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1 / 29 page

October 2010

Doc ID 18077 Rev 1

1/29

29

HVLED805

Off-line LED driver with primary-sensing

Features

■ 800 V, avalanche rugged internal power

MOSFET

■ 5% accuracy on constant LED output current

with primary control

■ Optocoupler not needed

■ Quasi-resonant (QR) zero voltage switching

(ZVS) operation

■ Internal HV start-up circuit

■ Open or short LED string management

■ Automatic self supply

■ Input voltage feed-forward for mains

independent cc regulation

Applications

■ AC-DC led driver applications

■ LED retrofit lamps (i.e. E27, GU10)

Table 1.

Device summary

Order codes

Package

Packaging

HVLED805

SO16N

Tube

HVLED805TR

Tape and reel

SO16N

Figure 1.

Application diagram

Rdmg

Rfb

...

Vin

HV start-up &

SUPPLY LOGIC

DE MAG

LOGIC

3.3V

Vref

1V

Vc

VCC

DMG

Rcomp

Cc omp

CLED

Rsens e

COMP

ILED

GND

SOURCE

DRAIN

LED

CONSTANT

CURRENT

REGULATION

DRIVING

LOGIC

OCP

CONSTANT

VOLTAGE

REGULATION

PROTECTION &

FEEDFORWARD

LOGIC

Vref

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