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STMicroelectronics HVLED805 Demonstration Board STEVAL-ILL037V1 STEVAL-ILL037V1 Data Sheet

Product codes
STEVAL-ILL037V1
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Page of 29
October 2010
Doc ID 18077 Rev 1
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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