UBA2071AT/N1,118 NXP Semiconductors, UBA2071AT/N1,118 Datasheet - Page 7

• Manufacturer Part Number: UBA2071AT/N1,118
• Description: IC DVR HALF BRIDGE 24-SOIC
• Manufacturer: NXP Semiconductors
• Type: CCFL/EEFL Controllerr

Specifications of UBA2071AT/N1,118

• Package / Case: 24-SOIC (7.5mm Width)
• Frequency: 38 ~ 42kHz
• Current - Supply: 1.5mA
• Voltage - Supply: 14V
• Operating Temperature: -25°C ~ 100°C
• Driver Type: CCFL Drivers
• Maximum Operating Temperature: + 100 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 935285776118

NXP Semiconductors
1.
UBA2071_A_1
Product data sheet
When both GH and GL are low, during the lamps-off period of PWM dimming (PWMD is high), the IC will shut down until the
PWMD is low and the GL is high again.
8.1 Supply, Start-up and UnderVoltage LockOut (UVLO)
The UBA2071 is supplied via the VDD pin as shown in
either made by the inverter itself, using a V/ t or is a auxiliary fixed supply voltage. A
start-up current source that can supply minimal I
be a resistor to the half bridge supply voltage.
The IC starts up when the voltage at the VDD pin goes over V
when the voltage at the VDD pin drops below V
hysteresis between the start and stop levels allows the IC to be supplied by the supply
buffer capacitor (C1 in
must not exceed the maximum voltage allowed on the VDD pin and has to be above
V
The UBA2071A can directly be supplied by a fixed voltage source on the VDD pin. The
voltage supplied by this source has to be above the maximum value of V
below the maximum of V
Fig 3.
Fig 4.
stop(VDD)
Basic half bridge inverter
Supply configuration (for UBA2071 only)
.
VDD
UBA2071
Figure
Rev. 01 — 23 June 2008
VDD
AUXILARY
SUPPLY
. Typically it will be a 12 V
4) until the auxiliary supply is settled. The auxiliary supply
FS
GH
SH
GL
PGND
current
start
up
C FS
C1
Half bridge control IC for CCFL backlighting
UBA2071; UBA2071A
stop(VDD)
V
startup(VDD)
V
DD
HB
Q HS
Q LS
UBA2071
LOAD
Figure
V
and the output GL is high
5 % source.
HV
014aaa101
is needed for start-up. This can
0.5 V
startup(VDD)
4. The supply voltage is
HV
014aaa100
C block
© NXP B.V. 2008. All rights reserved.
startup(VDD)
and shuts down
1
. The
but
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