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PDF FAN7310G Data sheet ( Hoja de datos )
| Número de pieza | FAN7310G | |
| Descripción | LCD Back Light Inverter Drive IC | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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FAN7310
LCD Back Light Inverter Drive IC
www.fairchildsemi.com
Features
• High Efficiency Single Stage Power Conversion
• Wide Input Voltage Range 5V to 24V
• Back Light Lamp Ballast and Soft Dimming
• Reduce External Components
• Precision Voltage Reference Trimmed to 2%
• ZVS full-bridge topology
• Soft Start
• PWM Control at fixed frequency
• Analog and Burst Dimming Function
• Synchronizable Switching Frequency With An External
Signal
• Open Lamp Protection
• Open Lamp Regulation
• 20 Pin SSOP
Description
The FAN7310 provides all the control functions for a
series parallel resonant converter and also contains a pulse
width modulation (PWM) controller to develop a supply
voltage. Typical operating frequency range is between
30kHz and 250kHz depending on the CCFL and the
transformer's characteristics.
The FAN7310 has a patent-pending on new phase-shift
control.
20-SSOP
1
©2004 Fairchild Semiconductor Corporation
Rev. 1.0.1
1 page  
FAN7310
Electrical Characteristics
For typical values Ta=25°C, Vcc=12V and for min/max values Ta is the operating ambient temperature range with
-25°C ≤ Ta ≤ 85°C and 5V ≤ Vcc ≤ 24V, unless otherwise specified.
Characteristics
Symbol
Test Condition
REFERENCE SECTION
Line Regulation
∆Vref 5 ≤ VCC ≤ 24V
2.5V Regulation Voltage
V25 -
OSCILLATOR SECTION(MAIN)
Oscillation Frequency
Ta = 25°C, Ct = 270pF
fosc Rt = 18k
Ct = 270pF, Rt = 18k
CT High Voltage
Vcth
-
CT Low Voltage
Vctl -
OSCILLATOR SECTION(BURST)
Oscillation Frequency
fosc Ctb = 10nF, Rt=18k
BCT High Voltage
Vbcth
-
BCT Low Voltage
Vbctl
-
ERROR AMP SECTION
Open Loop Gain
Unit Gain Bandwidth
Feedback Output High Voltage
Veh EA_IN = 0V
Output Sink Current
lsin EA_OUT = 1.5V
Output Source Current
lsur EA_OUT = 1.5V
EA_IN Driving Current On OLR
Iolr
EA_IN Driving Current On Burst Dimming Iburst
Feedback High Voltage On Burst Dimming Vfbh R(EA_IN) = 60kΩ
SOFT START SECTION
Soft Start Current
ISS S_S=2V
Soft Start Clamping Voltage
Vssh
-
PROTECTION SECTION
Open Lamp Protection Voltage
Volp
-
Open Lamp Regulation Voltage
Volr
-
Open Lamp Protection Charging Current Iolp
UNDER VOLTAGE LOCK OUT SECTION
Start Threshold Voltage
Vth -
Start Up Current
Ist VCC = Vth-0.2
Operating Supply Current
Iop VCC = 12V
Stand-by Current
Isb VCC = 12V
ON/OFF SECTION
On State Input Voltage
Von -
Off Stage Input Voltage
Voff -
Min. Typ. Max. Unit
-2
2.45 2.5
25 mV
2.55 V
108 115
106 115
- 2.0
- 0.5
122
kHz
124
-V
-V
195 225
-2
- 0.5
255 Hz
-V
-V
- 80
- dB
- 1.5
- MHz
- 2.5
-V
- - -1 mA
1-
- mA
75 105 135 uA
61 85 109 uA
Va+0.1 Va+0.4 Va+0.7 V
46
-5
8 uA
-V
1.75 2
1.75 2
0.7 1.4
2.25 V
2.25 V
2.1
- - 5V
- 130
- uA
- 1.5
- mA
- 200
- uA
2-
5V
- - 0.7
5
5 Page 
Mechanical Dimensions
Package
20-SSOP
FAN7310
Dimensions in millimeters
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet FAN7310G.PDF ] | |
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