© 2010 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN7930 • Rev. 1.0.1

6

Electrical Characteristics

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Units

Zero-Current Detect Section

Input Voltage Threshold

(4)

1.35

1.50

1.65

V

Detect Hysteresis

(4)

0.05

0.10

0.15

V

5.5

6.2

7.5

V

0

0.65

1.00

V

Input Bias Current

-1.0

-0.1

1.0

µA

Source Current Capability

(4)

-4

mA

Sink Current Capability

(4)

10

mA

Maximum Delay From ZCD to Output

Turn-On

(4)

dV/dt=-1V/100ns,

from 5V to 0V

100

200

ns

Output Section

Output Voltage High

9.2

11.0

12.8

V

Output Voltage Low

1.0

2.5

V

Rising Time

(4)

50

100

ns

Falling Time

(4)

50

100

ns

Maximum Output Voltage

11.5

13.0

14.5

V

1

V

Restart / Maximum Switching Frequency Limit Section

Restart Timer Delay

50

150

300

µs

Maximum Switching Frequency

(4)

250

300

350

kHz

RDY Pin

Output Sink Current

1

2

4

mA

320

500

mV

Output Leakage Current

Output High Impedance

1

µA

Soft-Start Timer Section

Internal Soft-Soft

(4)

3

5

7

ms

UVLO Section

Output Ready Voltage

2.185

2.240

2.295

V

Output Ready Hysteresis

0.600

V

Protections

OVP Threshold Voltage

2.620

2.675

2.730

V

OVP Hysteresis

0.120

0.175

0.230

V

Enable Threshold Voltage

0.40

0.45

0.50

V

Enable Hysteresis

0.050

0.10

0.15

V

Thermal Shutdown Temperature

(4)

125

140

155

°C

Hysteresis Temperature of TSD

(4)

60

°C

Note:

4.

These parameters, although guaranteed by design, are not production tested.