SSL4101T datasheet(22/29 Pages) NXP

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SSL4101T

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Product data sheet

Rev. 1 — 21 April 2011

22 of 29

NXP Semiconductors

SSL4101T

GreenChip III+ SMPS control IC

Oscillator flyback

fsw(fb)max

maximum flyback switching

frequency

100

125

150

kHz

Vstart(VCO)FBCTRL

VCO start voltage on pin

FBCTRL

1.3

1.5

1.7

Vhys(FBCTRL)

hysteresis voltage on pin

FBCTRL

[4] -60

ΔV

VCO(FBCTRL)

VCO voltage difference on pin

FBCTRL

--0.1

Peak current control flyback (pin FBCTRL)

VFBCTRL

voltage on pin FBCTRL

for maximum flyback peak current

1.85

2.0

2.15

Vto(FBCTRL)

time-out voltage on pin

FBCTRL

enable voltage

2.5

trip voltage

4.2

4.5

4.8

Rint(FBCTRL)

internal resistance on pin

FBCTRL

-3

-k

IO(FBCTRL)

output current on pin FBCTRL

VFBCTRL = 0 V

−1.4

−1.19 −0.93 mA

VFBCTRL = 2 V

−0.6

−0.5

−0.4

Ito(FBCTRL)

time-out current on pin

FBCTRL

VFBCTRL = 2.6 V

−36

−30

−24

μA

VFBCTRL = 4.1 V

−34.5 −28.5 −22.5 μA

Valley switching flyback (pin HV)

(

ΔV/Δt)

vrec(fb)

flyback valley recognition

voltage change with time

−75

+75

μs

td(vrec-swon)

valley recognition to switch-on

delay time

[5] -150

-ns

Soft start flyback (pin FBSENSE)

Istart(soft)fb

flyback soft start current

−75

−60

−45

μA

Vstart(soft)fb

flyback soft start voltage

enable voltage

0.43

0.49

0.54

Rstart(soft)fb

flyback soft start resistance

Overcurrent protection flyback (pin FBSENSE)

Vsense(fb)max

maximum flyback sense

voltage

ΔV/Δt = 50 mV/μs

0.49

0.52

0.55

ΔV/Δt = 200 mV/μs

0.52

0.55

0.58

tleb(fb)

flyback leading edge blanking

time

255

305

355

Istart(OPP)FBAUX

OPP start current on pin

FBAUX

−100

μA

Iopp(red)(FBAUX)

reduced overpower protection

current on pin FBAUX

Vsense(fb)max has reduced to

0.37 V

−360

μA

Table 5.

Characteristics …continued

Tamb =25 °C; VCC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into

the IC; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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