ssl1750 NXP Semiconductors, ssl1750 Datasheet - Page 22

• Manufacturer Part Number: ssl1750
• Description: Smps Control Ic For Led Drivers
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 5.
Measurement data valid at T
positive when flowing into the IC; unless otherwise specified.
SSL1750_1
Product data sheet
Symbol
Pulse width modulator PFC
t
Output voltage sensing PFC (pin VOSENSE)
V
V
V
V
V
V
V
I
Overcurrent protection PFC (pin PFCSENSE)
V
t
I
Soft start, soft stop PFC (pin PFCSENSE)
I
V
V
R
Oscillator PFC
f
t
Valley switching PFC (pin PFCAUX)
( V/ t)
t
t
on(PFC)
I(VOSENSE)
leb(PFC)
prot(PFCSENSE)
start(soft)PFC
sw(PFC)max
off(PFC)min
vrec(PFC)
to(vrec)PFC
th(ol)(VOSENSE)
start(fb)
stop(fb)
burst(L)
burst(H)
reg(VOSENSE)
ovp(VOSENSE)
sense(PFC)max
start(soft)PFC
stop(soft)PFC
start(soft)PFC
vrec(PFC)
Characteristics
Parameter
PFC on-time
open-loop threshold voltage
on pin VOSENSE
flyback start voltage
flyback stop voltage
LOW-level burst mode
voltage
HIGH-level burst mode
voltage
regulation voltage on pin
VOSENSE
overvoltage protection
voltage on pin VOSENSE
input current on pin
VOSENSE
maximum PFC sense
voltage
PFC leading edge blanking
time
protection current on pin
PFCSENSE
PFC soft start current
PFC soft start voltage
PFC soft stop voltage
PFC soft start resistance
maximum PFC switching
frequency
minimum PFC off-time
PFC valley recognition
voltage change with time
PFC valley recognition time
PFC valley recognition
time-out time
amb
…continued
= 25 C; V
CC
= 20 V; all voltages are measured with respect to ground (pin 2); currents are
Rev. 01 — 15 September 2008
Conditions
V
V
V
V
I
V
V
demagnetization to V/ t = 0
O(PFCCOMP)
V/ t = 50 mV/ s
V/ t = 200 mV/ s
VINSENSE
PFCCOMP
VINSENSE
PFCCOMP
VOSENSE
PFCAUX
= 1 V peak-peak
= 2.5 V
= 3.3 V,
= 0.9 V,
= V
= V
= 0 A
ton(max)(PFC)
ton(max)(PFC)
SMPS control IC for LED drivers
[2]
[3]
[4]
Min
3.6
30
0.35
-
1.55
1.87
2.19
2.475
2.60
5
0.49
0.51
250
0.46
0.42
12
100
1.1
-
-
-
3
50
75
Typ
4.5
40
0.40
1.72
1.60
1.92
2.24
2.500
2.63
45
0.52
0.54
310
-
0.50
0.45
-
125
1.4
-
-
-
4
60
SSL1750
© NXP B.V. 2008. All rights reserved.
Max
5.0
53
0.45
-
1.65
1.97
2.29
2.525
2.67
100
0.55
0.57
370
0.54
0.48
-
150
1.7
1.7
300
50
6
5
45
Unit
V
V
V
V
V
V
V
nA
V
V
ns
nA
V
V
k
kHz
V/ s
ns
ns
22 of 29
s
s
A
s
s