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NXP Semiconductors
SSL1750
SMPS control IC for LED drivers
Table 5. Characteristics …continued
Measurement data valid at T amb = 25 ° C; V CC = 20 V; all voltages are measured with respect to ground (pin 2); currents are
positive when ?owing into the IC; unless otherwise speci?ed.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Supply voltage management (pin V CC )
V trip
V startup
V th(UVLO)
trip voltage
start-up voltage
undervoltage lockout
0.55
21
14
0.65
22
15
0.75
23
16
V
V
V
threshold voltage
V start(hys)
V hys
I ch(low)
hysteresis of start voltage
hysteresis voltage
low charging current
during start-up phase
V startup ? V th(UVLO)
V I on pin HV > 80 V; V CC < V trip or
-
6.3
? 1.2
300
7
? 1
-
7.7
? 0.8
mV
V
mA
V th(UVLO) < V CC < V startup
I ch(high)
high charging current
V I on pin HV > 80 V;
? 6.3
? 5.4
? 4.6
mA
V trip < V CC < V th(UVLO)
I CC(oper)
operating supply current
no load on pin FBDRIVER and
2.25
3
3.75
mA
PFCDRIVER
Input voltage sensing PFC (pin VINSENSE)
V stop(VINSENSE)
stop voltage on pin
0.86
0.89
0.92
V
VINSENSE
V start(VINSENSE)
start voltage on pin
1.11
1.15
1.19
V
VINSENSE
? V pu(VINSENSE)
pull-up voltage difference on active after V stop(VINSENSE) is
-
? 100
-
mV
pin VINSENSE
detected
I pu(VINSENSE)
pull-up current on pin
active after V stop(VINSENSE) is
? 55
? 47
? 40
μ A
VINSENSE
detected
V mvc(VINSENSE)max
maximum mains voltage
4.0
-
-
V
compensation voltage on pin
VINSENSE
V ?r
V ?r(hys)
fast latch reset voltage
hysteresis of fast latch reset
active after V th(UVLO) is detected
-
-
0.75
0.12
-
-
V
V
voltage
I I(VINSENSE)
input current on pin
V VINSENSE > V stop(VINSENSE) after
5
33
100
nA
VINSENSE
Loop compensation PFC(pin PFCCOMP)
V start(VINSENSE) is detected
g m
I O(PFCCOMP)
transconductance
output current on pin
PFCCOMP
V VOSENSE to I O(PFCCOMP)
V VOSENSE = 3.3 V
V VOSENSE = 2.0 V
60
33
? 45
80
39
? 39
100
45
? 33
μ A/V
μ A
μ A
V clamp(PFCCOMP)
clamp voltage on pin
low power mode, PFC in burst
[1]
2.5
2.7
2.9
V
PFCCOMP
mode, lower clamp voltage
upper clamp voltage
[1]
-
3.9
-
V
V ton(PFCCOMP)zero
zero on-time voltage on pin
3.4
3.5
3.6
V
PFCCOMP
V ton(PFCCOMP)max
maximum on-time voltage
1.20
1.25
1.30
V
on pin PFCCOMP
SSL1750_1
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 15 September 2008
21 of 29
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