UBA2028T/N1 NXP Semiconductors, UBA2028T/N1 Datasheet - Page 4

• Manufacturer Part Number: UBA2028T/N1
• Description: CFL DRIVER, 600V, DIMMABLE, 20SOIC
• Manufacturer: NXP Semiconductors

Specifications of UBA2028T/N1

• Module Configuration: Half Bridge
• Supply Current: 170µA
• Meter Display Type: Fluorescent Lamp
• Supply Voltage Range: 8.6V To 9.6V, 12.4V To 13.6V
• Driver Case Style: SOIC
• No. Of Pins: 20
• Operating: RoHS Compliant

6. Block diagram
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
ANT/CMD
CSW
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
GLO
ACM
PCS
CSP
CSN
FS
HV