© 2006 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN7311 Rev. 1.0.6

5

Electrical Characteristics

anteed by design based on final characterization results.

Note:

3. These parameters, although guaranteed, are not 100% tested in production.

Symbol

Characteristics

Test Condition

Min.

Typ.

Max.

Unit

REFERENCE SECTION (Recommend X7R Capacitor)

Δ

Line Regulation

2

25

mV

V25

2.5V Regulation Voltage

2.45

2.50

2.55

V

OSCILLATOR SECTION (MAIN)

Oscillation Frequency

RT = 18kΩ

110.4

115.0

119.6

kHz

CT = 270pF, RT = 18kΩ

108

115

122

CT High Voltage

2.0

V

CT Low Voltage

0.5

V

OSCILLATOR SECTION (BURST)

Oscillation Frequency

RT=18kΩ

209.25 225.00 240.75

Hz

CTB = 10nF, RT=18kΩ

206.25

225.00 241.75

BCT High Voltage

2

V

BCT Low Voltage

0.5

V

ERROR AMP SECTION

80

dB

1.5

MHz

Feedback Output High Voltage

EA_IN = 0V

2.00

2.27

2.54

V

Output Sink Current

EA_OUT = 1.5V

-1

mA

Output Source Current

EA_OUT = 1.5V

1

mA

EA_IN Driving Current on OLR

75

105

135

µA

EA_IN Driving Current on Burst Dimming

61

85

109

µA

Feedback High Voltage on Burst Dimming R(EA_IN) = 60kΩ

V

SOFT-START SECTION

Soft-Start Current

S_S=1V

4

6

8

µA

4V

PROTECTION SECTION

Open-Lamp Protection Voltage 0

Start at open lamp

2.2

2.5

2.8

V

Open-Lamp Protection Voltage 1

Normal -> open lamp

1.3

1.5

1.7

V

Open-Lamp Regulation Voltage

1.75

2.00

2.25

V

Open-Lamp Protection Charging Current

0.7

1.4

2.1

µA

UNDER-VOLTAGE LOCKOUT SECTION

Start Threshold Voltage

5

V

Startup Current

130

180

µA

Operating Supply Current

1.5

4.0

mA

Stand-by Current

200

370

µA