HVLED805 Datasheet, PDF (1/29 Pages) STMicroelectronics – Off-line LED driver with primary-sensing

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)
Figure 1. Application diagram
SO16N
Table 1. Device summary
Order codes
Package
HVLED805
HVLED805TR
SO16N
Packaging
Tube
Tape and reel
Vin
VCC
Rdmg
DMG
3.3V
Rfb
DE MAG
LOGIC
Vref
PROT ECTION &
FEEDFORWARD
L OGI C
CONSTANT
CURRENT
REGULATION
CONSTANT
VOLTAGE
REGULATION
Vc
COMP
ILED
Rcomp
GND
CLED
Cc omp
HV start-up &
SUPPLY LOGIC
Vref
DRIVING
LOGIC
1V
OCP
DRAIN
SOURCE
Rsens e
LED
...
October 2010
Doc ID 18077 Rev 1
1/29
www.st.com
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