UBA2028T NXP [NXP Semiconductors], UBA2028T Datasheet - Page 3

• Manufacturer Part Number: UBA2028T
• Description: 600 V dimmable power IC for compact fluorescent lamps
• Manufacturer: NXP [NXP Semiconductors]

Fig 1.
GND
Block diagram
CT
10
4
REFERENCE
CURRENT
IREF
13
PREHEAT TIMER
CONTROLLED
OSCILLATOR
VOLTAGE
SUPPLY
V
I
analog
digital
CF
12
V
supply (5 V)
DD
LOGIC
16
reference
voltages
V
reset
DD(L)
3 V
V REF
7
V
lamp(fail)
• reset state
• start-up state
• preheat state
• ignition state
• burn state
• hold state
• power-down state
STATE LOGIC
VOLTAGE
SENSOR
LAMP
LVS
6
V
V
lamp(max)
pd
UBA2028
BOOTSTRAP
DRIVER
LOGIC
FREQUENCY
CONTROL
LOGIC
SHIFTER
LEVEL
CSW
ANT/CMD
PCS
11
HS
DRIVER
LS
DRIVER
AVERAGE
CURRENT
SENSOR
TR1
TR2
014aaa906
2, 3
19
20
18
15
17
1
5
8
9
SH
SL
GLI
GL
ACM
PCS
CSP
CSN
FS
HV