UBA2024 NXP Semiconductors, UBA2024 Datasheet - Page 2

• Manufacturer Part Number: UBA2024
• Description: Half-bridge Power Ic For Cfl Lamps
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
APPLICATIONS
ORDERING INFORMATION
BLOCK DIAGRAM
2004 Feb 03
UBA2024P
Integrated half-bridge power transistors
Integrated bootstrap diode
Integrated low-voltage supply
Maximum voltage of 550 V
Adjustable oscillator frequency
Soft start
Minimum glow time control.
Driver for any kind of load in a half-bridge configuration
Especially for electronically self-ballasted Compact
Fluorescent Lamps (CFL) for lamp currents up to
220 mA (RMS) under the restriction that the maximum
junction temperature is not exceeded.
Half-bridge power IC for CFL lamps
NUMBER
TYPE
SGND
V
SW
RC
DD
7
1
8
2
NAME
OSCILLATOR
GLOW TIME CONTROL
DIP8
UBA2024
SWEEP AND
plastic dual in-line package; 8 leads (300 mil)
V
DIVIDE-BY-2
DD
CONTROL
V
DD(stop)
Fig.1 Block diagram.
DEAD TIME
2
DESCRIPTION
GENERAL DESCRIPTION
The UBA2024 is a high-voltage monolithic integrated
circuit made in the EZ-HV SOI process. The IC is designed
for driving CFL lamps in a half-bridge configuration.
The IC features a soft start function, an adjustable internal
oscillator and an internal drive function with a high-voltage
level shifter for driving the half-bridge.
To guarantee an accurate 50% duty cycle, the oscillator
signal is passed through a divider before being fed to the
output drivers.
PACKAGE
LEVEL SHIFTER
HIGH VOLTAGE
HIGH SIDE
LOW SIDE
DRIVER
DRIVER
HS
LS
mdb029
Product specification
6
3
5
4
UBA2024
HV
FS
OUT
PGND
VERSION
SOT97-1