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PDF FAN7311B Data sheet ( Hoja de datos )
| Número de pieza | FAN7311B | |
| Descripción | LCD Backlight Inverter Drive IC | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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FAN7311B
LCD Backlight Inverter Drive IC
January 2007
Features
High-Efficiency Single-Stage Power Conversion
Wide Input Voltage Range: 5V to 25.5V
Backlight Lamp Ballast and Soft Dimming
Reduced Number of Required External Components
Precision Voltage Reference Trimmed to 2%
ZVS Full-Bridge Topology
Soft-Start Capability
PWM Control at Fixed Frequency
Analog and Burst Dimming Function
Programmable Striking Frequency
Open-Lamp Protection
Open-Lamp Regulation
20-Pin SOIC
Description
The FAN7311B provides all the control functions for a
series parallel resonant converter as well as a pulse
width modulation (PWM) controller to develop a supply
voltage. Typical operating frequency range is between
30kHz and 250kHz, depending on the cold cathode fluo-
rescent lamp (CCFL) and the transformer's characteris-
tics. The FAN7311B uses a new patent-pending phase-
shift control.
20-SOIC
Applications
LCD TV
LCD Monitor
www.DataSheet4U.com
Ordering Information
Part Number
FAN7311BM
FAN7311BMX
Package
20-SOIC
20-SOIC
Pb-Free
Yes
Yes
Operating Temperature Range
-25°C to 85°C
Packing Method
Rail
Tape & Reel
Protected by U.S. Patent: 5,652,479; 7,158,390.
© 2007 Fairchild Semiconductor Corporation
FAN7311B Rev. 1.0.0
www.fairchildsemi.com
1 page  
Electrical Characteristics
For typical values, TA=25°C and VIN=12V. For min. and max. values, TA is the operating ambient temperature range
with -25°C ≤ TA ≤ 85°C and 5V ≤ VIN ≤ 25.5V, unless otherwise specified. Specifications from -25°C to 85°C are guar-
anteed by design based on final characterization results.
Symbol
Parameter
Test Condition Min.
REFERENCE SECTION (Recommend X7R Capacitor)
ΔVref Line Regulation
V25 2.5V Regulation Voltage
5 ≤ VIN ≤ 25.5V
2.45
OSCILLATOR SECTION (MAIN)
fosc Oscillation Frequency
TA = 25°C, CT = 270pF,
RT = 18kΩ
CT = 270pF, RT = 18kΩ
110.4
108
Vcth CT High Voltage
Vctl CT Low Voltage
OSCILLATOR SECTION (BURST)
foscb Oscillation Frequency
TA = 25°C, CTB = 10nF,
RT=18kΩ
CTB = 10nF, RT=18kΩ
209.25
206.25
Vbcth BCT High Voltage
Vbctl BCT Low Voltage
ERROR AMP SECTION
Av
GBW
Open Loop Gain(2)
Unit Gain Bandwidth(2)
Veh Feedback Output High Voltage
EA_IN = 0V
lsin Output Sink Current
EA_OUT = 1.5V
lsur Output Source Current
EA_OUT = 1.5V
Iolr EA_IN Driving Current on OLR
Iburst EA_IN Driving Current on Burst Dimming
Vfbh Feedback High Voltage on Burst Dimming R(EA_IN) = 60kΩ
SOFT-START SECTION
2.00
1
75
61
Va+0.1
ISS Soft-Start Current
Vssh Soft-Start Clamping Voltage(2)
PROTECTION SECTION
S_S=1V
4
Volp0 Open-Lamp Protection Voltage 0
Volp1 Open-Lamp Protection Voltage 1
Volr Open-Lamp Regulation Voltage
Iolp Open-Lamp Protection Charging Current
UNDER-VOLTAGE LOCKOUT SECTION
Start at open lamp
Normal -> open lamp
2.2
1.3
1.75
0.7
Vth Start Threshold Voltage
Ist Start-up Current
Iop Operating Supply Current
Isb Stand-by Current
VIN = Vth-0.2
VIN = 12V
VIN = 12V
Note:
2. These parameters, although guaranteed, are not 100% tested in production.
Typ.
2
2.50
115.0
115
2.0
0.5
225.00
225.00
2
0.5
80
1.5
2.27
105
85
Va+0.4
6
4
2.5
1.5
2.00
1.4
130
1.5
200
Max.
25
2.55
119.6
122
240.75
241.75
2.54
-1
135
109
Va+0.7
8
2.8
1.7
2.25
2.1
5
180
4.0
370
Unit
mV
V
kHz
V
V
Hz
V
V
dB
MHz
V
mA
mA
µA
µA
V
µA
V
V
V
V
µA
V
µA
mA
µA
© 2007 Fairchild Semiconductor Corporation
FAN7311B Rev. 1.0.0
5
www.fairchildsemi.com
5 Page 
4. Winding Specification
Pin No.
5 --> 2
7 --> 9
Wire
1 UEW 0.45 φ
1 UEW 0.04 φ
Turns
19
2300
Inductance
115µH
1.5H
Leakage Inductance
21.5µH
280mH
Remarks
1KHz, 1V
1KHz, 1V
5. BOM of the Application Circuit
Part Ref.
F1
R1
R2
R3
R4
R5
R6
R8
R9
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
C1
C2
C3
C4
Value
Description / Vendor
Fuse
24V 3A
Fuse
Resistor (SMD)
330kΩ
1608 J
56kΩ
1608 F
75kΩ
1608 F
56kΩ
1608 F
27kΩ
1608 F
82kΩ
1608 F
100kΩ
1608 F
9.1kΩ
1608 F
1kΩ 1608 F
1kΩ 1608 F
1kΩ 1608 F
100kΩ
1608 F
10kΩ
1608 F
1kΩ 1608 F
1kΩ 1608 F
1kΩ 1608 F
1kΩ 1608 F
10kΩ
1608 J
10kΩ
1608 J
10kΩ
1608 J
10kΩ
1608 J
10kΩ
1608 J
10kΩ
1608 J
1kΩ 1608 F
10kΩ
1608 J
Capacitor (SMD)
0.22µF
16V 1608 K
1µF 50V 2012 K
4.7nF
50V 1608 K
4.7nF
50V 1608 K
Part Ref.
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C17
C18
C19
C20
C21
C25
C26
C27
C28
C29
C30
D1
D3
D4
D6
D7
D8
D9
D10
D11
Q1
Value
Description / Vendor
220pF
50V 1608 J
1µF 50V 2012 K
10µF
16V 3216
10µF
16V 3216
1µF 16V 1608 K
15pF
3KV 3216
15pF
3KV 3216
15pF
3KV 3216
15pF
3KV 3216
10nF
50V 1608 K
10nF
50V 1608 K
2.2nF
50V 1608 Z
2.2nF
50V 1608 Z
2.2nF
50V 1608 Z
2.2nF
50V 1608 Z
10nF
50V 1608 Z
1µF 50V 2012 K
0.1µF
16V 1608 K
1µF 50V 2012 K
10nF
50V 1608 Z
10nF
50V 1608 K
10nF
50V 1608 K
Diode / TR (SMD)
BAW56
Fairchild Semiconductor
BAV70
Fairchild Semiconductor
BAV70
Fairchild Semiconductor
BAV99
Fairchild Semiconductor
BAV99
Fairchild Semiconductor
BAV99
Fairchild Semiconductor
BAV99
Fairchild Semiconductor
BAW56
Fairchild Semiconductor
BAW56
Fairchild Semiconductor
KST2222 Fairchild Semiconductor
© 2007 Fairchild Semiconductor Corporation
FAN7311B Rev. 1.0.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet FAN7311B.PDF ] | |
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