tea1751lt NXP Semiconductors, tea1751lt Datasheet - Page 22

• Manufacturer Part Number: tea1751lt
• Description: Greenchip Iii Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 5.
T
the IC; unless otherwise specified.
TEA1751T_LT_1
Product data sheet
Symbol
Output voltage sensing PFC (pin VOSENSE)
V
V
V
I
Over current protection PFC (pin PFCSENSE)
V
t
I
Soft start PFC (pin PFCSENSE)
I
V
R
Oscillator PFC
f
t
Valley switching PFC (pin PFCAUX)
( V/ t)
t
t
Demagnetization management PFC (pin PFCAUX)
V
t
I
Driver (pin PFCDRIVER)
I
bst(dual)
leb(PFC)
prot(PFCSENSE)
start(soft)PFC
sw(PFC)max
off(PFC)min
vrec(PFC)
to(vrec)PFC
to(demag)PFC
prot(PFCAUX)
src(PFCDRIVER)
amb
th(ol)(VOSENSE)
reg(VOSENSE)
ovp(VOSENSE)
sense(PFC)max
start(soft)PFC
th(comp)PFCAUX
start(soft)PFC
= 25 C; V
vrec(PFC)
Characteristics
CC
= 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into
Parameter
open-loop threshold voltage on
pin VOSENSE
regulation voltage on pin
VOSENSE
overvoltage protection voltage
on pin VOSENSE
dual boost current
maximum PFC sense voltage
PFC leading edge blanking
time
protection current on pin
PFCSENSE
PFC soft start current
PFC soft start 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
comparator threshold voltage
on pin PFCAUX
PFC demagnetization time-out
time
protection current on pin
PFCAUX
source current on pin
PFCDRIVER
…continued
Rev. 01 — 10 July 2008
Conditions
for I
V
V
V
enabling voltage
V
demagnetization to V/ t
V
V
V/ t = 50 mV/ s
V/ t = 200 mV/ s
VINSENSE
VOSENSE
VINSENSE
PFCAUX
PFCAUX
PFCDRIVER
O(PFCCOMP)
1 V peak-peak
50 mV
2.1 V
V
V
2 V
bst(dual)
bst(dual)
0
TEA1751T; TEA1751LT
or
0
[2]
[3]
GreenChip III SMPS control IC
Min
-
2.475 2.500 2.525 V
2.60
-
-
0.49
0.52
250
0.46
12
100
1.1
-
-
-
3
40
-
50
75
150
75
Typ
1.15
2.63
-15
-30
0.52
0.55
310
-
0.50
-
125
1.4
-
-
-
4
50
-
60
100
0.5
© NXP B.V. 2008. All rights reserved.
Max
-
2.67
-
-
0.55
0.57
370
0.54
-
150
1.7
1.7
300
50
6
60
-
5
45
50
5
22 of 29
Unit
V
V
nA
V
V
ns
nA
V
k
kHz
V/ s
ns
ns
mV
nA
A
A
A
s
s
s