UBA2070 데이터 시트보기 (PDF) - Philips Electronics
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UBA2070 Datasheet PDF : 20 Pages
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8
n.c.
5
GND
1
CT
VDD
7
VREF
3 V 14
SUPPLY
reference
voltages
digital
supply (5 V)
analog
VDD(low)
IGNITION TIMER
reset
LOGIC
VDD(clamp)
BOOTSTRAP
DRIVER
LOGIC
LEVEL
SHIFTER
HS
DRIVER
LS
DRIVER
9
FVDD
10
GH
11
SH
6
GL
STATE LOGIC
• reset state
• ignition state
• burn state
• hold state
• powerdown state
ANT/ CMD
12
ACM
VOLTAGE
CONTROLLED
OSCILLATOR
REFERENCE
I
CURRENT
V
4
3
IREF
CF
LAMP
VOLTAGE
SENSOR
VLVS(fail) VLVS(max)
13
LVS
Fig.1 Block diagram.
LOGIC
FREQUENCY
CONTROL
AVERAGE
CURRENT
SENSOR
15
CS +
16
CS −
2
CSW
MGT990
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