FAN7319 Datasheet, PDF (6/23 Pages) Fairchild Semiconductor – LCD Backlight Inverter Drive IC

Electrical Characteristics
For typical values, TA = 25°C, VIN = 15V, and -25°C ≤ TA ≤ 85°C, unless otherwise specified. Specifications to TA=
-25°C ~ 85°C are guaranteed by design based on final characterization results.
Symbol
Parameter
Test Conditions
Under-Voltage Lockout Section (UVLO)
Vth
Start Threshold Voltage
Vthhys Start Threshold Voltage Hysteresis
Ist
Startup Current
VIN = 9.0V
Iop
Operating Supply Current
VIN = 15V,
Not Switching
ON/OFF Section
Von On-State Input Voltage
Voff Off-State Input Voltage
Isb
Standby Current
VIN = 15V,
ENA = LOW
RENA Pull-Down Resistor
Reference Section (Recommend 1µF X7R Capacitor)
V5
5V Regulation Voltage
0 ≤ I5 ≤ 3mA
V5line 5V Line Regulation
10 ≤ VIN ≤ 24V
V5load 5V Load Regulation
Oscillator Section (Main)
I5 = 3mA
fosc
Oscillation Frequency
TA = 25°C,
RT = 50kΩ
RT = 50kΩ
TA = 25°C, RT =
50kΩ, RT1 = 100kΩ
fstr
Oscillator Frequency in Striking Mode
RT = 50kΩ,
RT1 = 100kΩ
Vcth CT High Voltage
Vctl
CT Low Voltage
Burst Dimming Section
Vbdim(ON) Burst Dimming On Voltage
Vbdim(Off) Burst Dimming Off Voltage
Min.
8.0
0.4
40
0.5
1.4
100
120
4.9
48.50
48.25
68.90
68.60
2
0
Typ.
8.7
0.8
100
2.0
160
200
5.0
4
4
50.0
50.00
71.45
71.45
2
0.45
Max.
Unit
9.4
V
1.2
V
120
µA
3.5
mA
5.0
V
0.7
V
200
µA
280
kΩ
5.1
V
50
mV
50
mV
51.50
kHz
51.75
74.00
kHz
74.30
V
V
5
V
0.8
V
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© 2010 Fairchild Semiconductor Corporation
FAN7319 • 1.0.1
6
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