Data Sheet No. PD60212 revC
IR2520D(S) & (PbF)
ADAPTIVE BALLAST CONTROL IC
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Features
600V Half Bridge Driver
Integrated Bootstrap FET
Adaptive zero-voltage switching (ZVS)
Internal Crest Factor Over-Current Protection
0 to 6VDC Voltage Controlled Oscillator
Programmable minimum frequency
Micropower Startup Current (80uA)
Internal 15.6V zener clamp on Vcc
Small DIP8/SO8 Package
Also available LEAD-FREE (PbF)
Packages
8-Lead PDIP
IR2520D
8 Lead SOIC
IR2520DS
Description
The IR2520D(S) is a complete adaptive ballast controller and 600V half-bridge driver integrated into a single
IC for fluorescent lighting applications. The IC includes adaptive zero-voltage switching (ZVS), internal crest
factor over-current protection, as well as an integrated bootstrap FET. The heart of this IC is a voltage con-
trolled oscillator with externally programmable minimum frequency. All of the necessary ballast features are
integrated in a small 8-pin DIP or SOIC package.
Typical Application Diagram
RSUPPLY
DCP2
BR1
MHS
F1
L1
CBUS
CF
RFMIN
L2
LF
CVCC
VCC
1
COM
2
FMIN
VB
SPIRAL
CFL
8
7
6
5
LO
MLS
HO
VS
CBS
LRES
CSNUB
CDC
CRES
IR2520D
3
VCO
4
CVCO
DCP1
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