FAN6756MRMY View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

FAN6756MRMY

mWSaver™ PWM Controller

Fairchild Semiconductor 

Electrical Characteristics (Continued)

VDD=15 V and TJ=TA=25C unless otherwise noted.

Symbol

Parameter

Feedback Input Section

AV

Feedback Voltage to Current-

Sense Attenuation

ZFB

Regular FB Internal Pull-High

Impedance

Condition

VFB-OPEN FB Internal Biased Voltage

FB Pin Open

VFB-OLP Threshold Voltage for OLP

tD-OLP Delay for OLP

VFB-N

VFB-G

VFB-ZDCR

VFB-ZDC

VFB-ZDCR-

DBM

VFB-ZDC-

DBM

tDBM

tD-DBM

VFB-

RECOVER

Threshold Voltage for Maximum

Switching Frequency

Threshold Voltage for Minimum

Switching Frequency

FB Threshold Voltage for Zero-

Duty Recovery

FB Threshold Voltage for Zero-

Duty

FB Threshold Voltage for Zero-

Duty Recovery in Deep Burst

Mode

FB Threshold Voltage for Zero-

Duty in Deep-Burst Mode

Condition of Triggering Deep

Burst Mode

Delay time of Entering Deep Burst

Mode

Threshold Voltage for Leaving

Deep Burst Mode Immediately

VDD=VUVLO+0.3 V

VFB<VFB-ZDC Repeats 3

Times Continuously

Deep Burst Mode,

VDD>VDD-ZFBR and Gate

Off

Current-Sense Section

tPD

tLEB

VLIMIT-L

VLIMIT-H

VSSCP-L

VSSCP-H

tON-SSCP

Propagation Delay to Output

Leading Edge Blanking Time

Current Limit at Low Line

(VAC-RMS=86 V)

Current Limit at High Line

(VAC-RMS=259 V)

Threshold Voltage for SSCP at

Low Line (VAC-RMS=86 V)

Threshold Voltage for SSCP at

High Line (VAC-RMS=259 V)

Minimum On-time of Gate to

Trigger SSCP

tD-SSCP

tSS

Debounce Time for SSCP

Soft-Start Time

VDC=122 V, Series

R=200 kΩ to HV

VDC=366 V, Series

R=200 kΩ to HV

VDC=122 V, Series

R=200 kΩ to HV

VDC=366 V, Series

R=200 kΩ to HV

VSENSE<VSSCP-(L/H)

VSENSE<VSSCP-(L/H)

Startup

Min. Typ. Max. Unit

1/4.5

1/4.0

1/3.5

V/V

8.5

kΩ

5.2

5.4

5.6

V

4.3

4.6

4.9

V

45.0

57.5

70.0

ms

2.6

2.8

3.0

V

2.1

2.3

2.5

V

1.9

2.1

2.3

V

1.8

2.0

2.2

V

2.5

2.7

2.9

V

2.35

2.55

2.75

V

7.5

ms

600

ms

0.9

V

100

250

ns

200

265

330

ns

0.43

0.46

0.49

V

0.36

0.39

0.42

V

30

50

70

mV

80

100

120

mV

4.00

110

5

4.55

5.10

µs

170

230

µs

7

9

ms

Continued on the following page…

© 2011 Fairchild Semiconductor Corporation

FAN6756 • Rev. 2.0.0

7

www.fairchildsemi.com

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