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PDF FP5132A Data sheet ( Hoja de datos )
| Número de pieza | FP5132A | |
| Descripción | BURST MODE CONTROL IC | |
| Fabricantes | Feeling Technology | |
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Technology
FP5132A
BURST MODE CONTROL IC
GENERAL DESCRIPTION
The FP5132A is a burst mode signal control IC for backlight inverter applications field. The FP5132A
includes a low frequency open collector output stage for PWM control IC, positive dimming signal input
comparing with oscillator, a shutdown input for monitor the lamp terminal abnormal feedback signal, an
output 5.0V precision reference supply.
FEATURES
Wide supply voltage operating range: 6.5 to 30V
Dimming input control
Fixed Reference Voltage: 5.0V
Low oscillator frequency: 50Hz ~ 1KHz
Shutdown detection input
Open collector output
Package: SOP8/PDIP8
SOP8
TYPICAL APPLICATION
PDA backlight inverter
TFT-LCD backlight inverter
Notebook backlight inverter
Rev0.2 Apr. 07, 2006
P1/FP5132
1 page  
Technology
FP5132A
ELECTRICAL CHARACTERISTICS
Electrical characteristics over recommended operating temperature range VCC 8V
Reference section
PARAMETER
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Output voltage (pin 8)
Output voltage change with
Temperature
Input voltage regulation
VREF
IO=1mA
VREF / T TA=-20 to 85
VREF /VCC Vcc=6.5V 30V
4.90 5 5.1 V
-0.2 ±1 %
3 5 12.5 mV
Output voltage regulation
VREF / IO Io = 0.1mA to 3 mA
3 5 7.5 mV
Oscillator Section
PARAMETER
Frequency
Frequency change with voltage
Frequency change with temperature
Oscillator voltage
Oscillator charge / discharge ratio
SYMBOL TEST CONDITIONS
f CT=6.8nF,RT=100K
f/ V
VCC=6.5V to 30V
f/ T
TA=-20 to 85
VRT RT=100K
Charge/Discharge CT=6.8nF,RT=100K
MIN TYP MAX UNIT
230 250 270 Hz
1%
2%
0.53 0.55 0.57 V
0.9 1.05 1.2 -
Output Section
PARAMETER
Output saturation voltage
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
VSAT
IO 3mA
0.15 0.2 V
Dimming input section
PARAMETER
Dimming input (PWM Active High)
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Dim-
Zero Duty Cycle
Maximum Duty Cycle
0.97 1.0 1.03 V
2.9 3.0 3.1 V
Shutdown Section
PARAMETER
Shutdown Threshold voltage
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
VSHND
2.4 2.5 2.6
V
Total device
PARAMETER
Standby supply current
†All typical values are at TA 25 .
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
IAVE 1.0 1.5 2.0 mA
Rev0.2 Apr. 07, 2006
P5/FP5132
5 Page 
Technology
APPLICATION NOTE
FP5132A
CN1
Vin
Vin
GND
Dimming
GND
ON/OFF
F1
FUSE
C2
R10
R12
Q6
R14
R5
Q2
R11
C5
C6
R17 C8
IC1
Vcc
SCP OUT
COMP
DTC FB
RT GND
FP5001
R18
IC2
VCC VREF
SHUTDOWN
DIM
P/N
OUT
RT
CT GND
R27 C14
FP5132
C13
R25
R26
D3
DIODE
R6
R8
Q4
R13
R15
R16
C7
Q7
Q1
32
R7
R9
L1
D1
C9
C10 R21
R20
R1 R2 R3 R4
Q3
Q5
5
4
C4
2
6
T1
9
7
C1
C3
CN2
HV
LV
CN3
HV
LV
1 D2
C11 R22
R19
R23 R24
C12
2-lamp CCFL Inverter with FP5132A Burst Mode Dimming Control
Note
U2 is FP5132A, using for a burst mode 1-lamp Royer CCFL inverter with FP5001, the R23-C14
choose the oscillation frequency, and R26-C15 is a simple DIM signal noise rejection filter, the D3
avoids the CCFL feedback signal when burst PWM signal is low state.
The burst PWM voltage must higher than 1.0V VFB voltage for turn-off FP5001 PWM, the bias voltage
depends on FP5132A burst PWM voltage level and feedback path impendence.
Rev0.2 Apr. 07, 2006
P11/FP5132
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet FP5132A.PDF ] | |
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