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PDF FP5132B Data sheet ( Hoja de datos )
| Número de pieza | FP5132B | |
| Descripción | BURST MODE CONTROL IC | |
| Fabricantes | Feeling Technology | |
| Logotipo |  |
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Technology
FP5132B
BURST MODE CONTROL IC
GENERAL DESCRIPTION
The FP5132B is a burst mode signal control IC for backlight inverter applications field. The FP5132B
includes a low frequency open collector output stage for PWM control IC, negative 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
DIP8
TYPICAL APPLICATION
PDA backlight inverter
TFT-LCD backlight inverter
Notebook backlight inverter
SOP8
Rev0.2 Apr. 07, 2006
P1/FP5132
http://www.Datasheet4U.com
1 page  
Technology
FP5132B
ELECTRICAL CHARACTERISTICS
Electrical characteristics over recommended operating temperature range VCC 8V
Reference section
PARAMETER
Output voltage (pin 8)
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
VREF
IO=1mA
4.90 5. 5.1 V
Output voltage change with
Temperature
VREF / T TA=-20 to 85
-0.2 ±1 %
Input voltage regulation
Output voltage regulation
VREF / VCC VCC=6.5V 30V
VREF / Io Io = 0.1mA to 3 mA
3 5 12.5 mV
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
0.01 0.1 0.15 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
2.9 3.0 3.1
V
V
Shutdown section
PARAMETER
Shutdown Threshold voltage
SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
VSHDN
IC operation
2.4 2.5 2.6 V
Total device section
PARAMETER
Average 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 CIRCUITS
FP5132B
CN1
VCC
VGCNCD
DIMMING
GND
ON/OFF
1
2
3
4
5
6
Input Signal
F1
2A
R1
+
C1
R3
R4
Q1
Q2
R5
R2
R26
C2
Q5
32
L1
U2
1 VCC VREF
2 DIM- SHDN
3 CT
OUT
4 RT
GND
FP5132B
8
7
6
5
R25
C13
D3
R12
R11
R13 R14
Q3
C15 C14 R23
U1
8 GND VO 1
7 RT VCC 2
6 DTC COMP 3
5 SCP FB 4
FP5001
R24
R8
Q4
R10
R9 C5
C6
D1
C3 C4
R6 R7
C12
R22
R15 R16 R17 R18
Q6
Q7
C11
R21
T1
5
9
C7 4
7
2
6
1
C8
CN2
HV
R19 LV
D7
R20 C9
2-lamp CCFL Inverter with FP5132B Burst Mode Dimming Control
Note
U2 is FP5132B, 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 FP5132B burst PWM voltage level and feedback path impendence.
Inverter Power-On
50% Dimming Control
T .B. X2
T .B. X400 (Full)
Rev0.2 Apr. 07, 2006
P11/FP5132
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet FP5132B.PDF ] | |
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