UBA2071AT/N1,118 NXP Semiconductors, UBA2071AT/N1,118 Datasheet - Page 5

• 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
7. Pinning information
Table 3.
UBA2071_A_1
Product data sheet
Symbol
IFB
CIFB
VFB
CVFB
CSWP
CT
CF
IREF
CPWM
SGND
COMM
Pin description
Pin
1
2
3
4
5
6
7
8
9
10
11
7.1 Pinning
7.2 Pin description
Description
current feedback input.
current regulation
capacitor.
voltage feedback input
voltage regulation
capacitor
frequency sweep
capacitor
fault timing capacitor
HF-oscillator timing
capacitor
reference current output A 33 k resistor must be connected between this pin and the signal ground.
PWM timing capacitor
signal ground
master / slave
communication
Fig 2.
Pin assignment SO24 and SSOP24 package (top view)
Function
Input signal for the lamp current control loop. Should be connected to a
voltage proportional to the lamp current.
A capacitor must be connected between this pin and the signal ground. It
sets the time constant of the lamp current control loop.
Input signal for the voltage control loop. Should be connected to a voltage
proportional to the transformer output voltage.
A capacitor must be connected between this pin and the signal ground. It
sets the time constant of the voltage control loop.
A capacitor must be connected between this pin and the signal ground. It
sets the time in which the HF frequency is swept up from regulation level to
the maximum frequency and back during PWM dimming.
A capacitor must be connected between this pin and the signal ground. It
sets the time that a fault condition is allowed before the IC shuts down itself.
A capacitor must be connected between this pin and the signal ground. It
sets the minimum switching frequency of the half bridge.
The IC uses it to make accurate internal currents.
If a capacitor is connected between this pin and the signal ground, it sets the
frequency of the PWM oscillator.
If this pin is connected to signal ground the internal PWM oscillator is
disabled.
Via this pin the IC can communicate with a dedicated slave device.
Rev. 01 — 23 June 2008
NONFAULT
CPWM
COMM
CSWP
SGND
CVFB
CIFB
IREF
VFB
IFB
CT
CF
10
11
12
1
2
3
4
5
6
7
8
9
Half bridge control IC for CCFL backlighting
UBA2071
UBA2071; UBA2071A
014aaa099
24
23
22
21
20
19
18
17
16
15
14
13
GH
FS
SH
n.c.
n.c.
n.c.
GL
PGND
VDD
EN
PWMA
PWMD
© NXP B.V. 2008. All rights reserved.
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