Pin Configurations - Philips 19PFL5522D Service Manual

EN 88 9. LC7.2E LB
9.11.2 Diagram A2, Type UBA2070 (IC U300), CCFL Ballast Driver
Block Diagram
8
n.c.
5
GND
IGNITION TIMER
1
CT
REFERENCE
CURRENT
4
I REF

Pin Configurations

Circuit Descriptions, Abbreviation List, and IC Data Sheets
V DD V REF
7
3 V
SUPPLY
reference
voltages
digital
supply (5 V)
analog
V DD(low)
reset
LOGIC
VOLTAGE
CONTROLLED
OSCILLATOR
I
V
3
CF
CS −
CT
1 16
CS +
CSW 2 15
V REF
CF 3 14
I REF
4 13
LVS
UBA2070T
5 12
GND ACM
GL 6 11 SH
V DD 7 10
GH
FV DD
n.c. 8 9
Figure 9-13 Internal block diagram and pin configuration
1 4
V DD(clamp)
BOOTSTRAP
STATE LOGIC
•
reset state
•
ignition state
•
burn state
•
hold state
•
powerdown state
LAMP
VOLTAGE
SENSOR
V LVS(fail) V LVS(max)
13
LVS
CSW
I REF
GND
LEVEL
DRIVER
SHIFTER
DRIVER
DRIVER
LOGIC
ANT/CMD
LOGIC
AVERAGE
CURRENT
SENSOR
FREQUENCY
CONTROL
2
CSW
CS −
CT
1 16
CS +
2 15
V REF
CF 3 14
4 13
LVS
UBA2070P
5 12
ACM
GL 6 11 SH
V DD 7 10
GH
FV DD
n.c. 8 9
9
FV DD
HS
10
GH
11
SH
LS
6
GL
12
ACM
15
CS +
16
CS −
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