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Numéro de référence | KA7522D | ||
Description | DIMMING BALLAST CONTROL IC | ||
Fabricant | Fairchild Semiconductor | ||
Logo | |||
1 Page
KA7522/D
DIMMING BALLAST CONTROL IC
BALLAST CONTROL IC
The KA7522 is a electronic ballast controller for fluorescent inverter syst-
ems. It contains whole function in KA7521, current feed back and prehea-
ting time controlled by temperature sensing.
FEATURES
• 3-step soft start
• Input voltage limit & Brown out
• Non Lamp detect, & Lamp reset
• ZVS Guard control
• Current feedback control
• Preheating time controlled by temperature sensing
22 DIP
20 SOP
BLOCK DIAGRAM
Tsns
17
Rhys
18
ORDERING INFORMATION
Device
KA7522
KA7522D
Package
22 SDIP
20 SOP
Operating Temperature
Î-25 ~ + 100
Î-25 ~ + 100
Vds
Vgs
16 15
VCC
20
BROW N
OUT
OVER
TEMPERATUR E
IN P U T
V LIM IT
ZVS GUARD
CONTRO L
10
3 STEP
8 LOW - SOFT
TEMPER
START
7
SAW TOO TH
GENERA-
TOR
+
-
U V L O & 5 V V re f
1 4 V re f
2
D -F/F
2
OUTPUT
STAGE
2 OUT2
19 OUT1
D C -F E ED
12 FORW AR D
DELAY TIMER
D IM M IN G
BOX
CURREN T
FEEDBACK
M U LT IP LIE R
LAMP
DETECT
NON
LAMP
OVER-
CURREN T
4 Vsns
LAMP RESET
9
ñ
5
V lm 1
6
V lm 2
11
Vmo
13
V fb
©1999 Fairchild Semiconductor Corporation
Rev. B
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Pages | Pages 9 | ||
Télécharger | [ KA7522D ] |
No | Description détaillée | Fabricant |
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