ssl1750 NXP Semiconductors, ssl1750 Datasheet - Page 24

• 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
Peak current control flyback (pin FBCTRL)
V
V
R
I
I
Valley switching flyback (pin HV)
( V/ t)
t
Soft start flyback (pin FBSENSE)
I
V
R
Overcurrent protection flyback (pin FBSENSE)
V
t
Driver (FBDRIVER-pin)
I
I
V
Latch input (pin LATCH)
V
I
V
V
V
O(FBCTRL)
to(FBCTRL)
d(vrec-swon)
start(soft)fb
leb(fb)
src(FBDRIVER)
sink(FBDRIVER)
O(LATCH)
FBCTRL
to(FBCTRL)
start(soft)fb
sense(fb)max
O(FBDRIVER)(max)
prot(LATCH)
en(LATCH)
hys(LATCH)
oc(LATCH)
int(FBCTRL)
start(soft)fb
vrec(fb)
Characteristics
Parameter
voltage on pin FBCTRL
time-out voltage on pin
FBCTRL
internal resistance on pin
FBCTRL
output current on pin
FBCTRL
time-out current on pin
FBCTRL
flyback valley recognition
voltage change with time
valley recognition to
switch-on delay time
flyback soft start current
flyback soft start voltage
flyback soft start resistance
maximum flyback sense
voltage
flyback leading edge
blanking time
source current on pin
FBDRIVER
sink current on pin
FBDRIVER
maximum output voltage on
pin FBDRIVER
protection voltage on pin
LATCH
output current on pin LATCH V
enable voltage on pin
LATCH
hysteresis voltage on pin
LATCH
open-circuit voltage on pin
LATCH
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
for maximum flyback peak current
enable voltage
trip voltage
V
V
V
V
V
V
V
at start-up
V
V/ t = 50 mV/ s
V/ t = 200 mV/ s
FBCTRL
FBCTRL
FBCTRL
FBCTRL
FBDRIVER
FBDRIVER
FBDRIVER
prot(LATCH)
en(LATCH)
= 0 V
= 2 V
= 2.6 V
= 4.1 V
= 2 V
= 2 V
= 10 V
< V
V
prot(LATCH)
LATCH
< V
oc(LATCH)
SMPS control IC for LED drivers
[5]
Min
1.85
-
4.2
-
-
0.43
12
0.49
0.52
255
-
-
-
-
1.23
1.30
80
-
1.4
0.6
36
34.5
75
75
85
Typ
2.0
2.5
4.5
3
-
150
0.49
-
0.52
0.55
305
0.7
1.2
11
1.25
1.35
100
2.9
1.17
0.5
30
28.5
60
0.5
80
SSL1750
© NXP B.V. 2008. All rights reserved.
Max
2.15
-
4.8
-
+75
-
0.54
-
0.55
0.58
355
-
-
-
12
1.27
1.40
140
-
0.93
0.4
24
22.5
45
75
Unit
V
V
V
k
mA
mA
V/ s
ns
V
k
V
V
ns
A
A
A
V
V
V
mV
V
24 of 29
A
A
A
A