TEA1751T_LT_2
?NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 23 December 2009
23 of 29
NXP Semiconductors
TEA1751T; TEA1751LT
GreenChip III SMPS control IC
I
sink(PFCDRIVER)
sink current on pin
PFCDRIVER
V
PFCDRIVER
= 2 V
-
0.7
-
A
V
PFCDRIVER
= 10 V
-
1.2
-
A
V
O(PFCDRIVER)max
maximum output voltage on pin
PFCDRIVER
-
11
12
V
Overvoltage protection flyback (pin FBAUX)
I
ovp(FBAUX)
overvoltage protection current
on pin FBAUX
279
300
321
糀
N
cy(ovp)
number of overvoltage
protection cycles
6
8
12
Demagnetization management flyback (pin FBAUX)
V
th(comp)FBAUX
comparator threshold voltage
on pin FBAUX
60
80
110
mV
I
prot(FBAUX)
protection current on pin
FBAUX
V
FBAUX
= 50 mV
50
-
5
nA
V
clamp(FBAUX)
clamp voltage on pin FBAUX
I
FBAUX
= 500 糀
1.0
0.8
0.6
V
I
FBAUX
= 500 糀
0.5
0.7
0.9
V
t
sup(xfmr_ring)
transformer ringing
suppression time
1.5
2
2.5
約
Pulse width modulator flyback
t
on(fb)min
minimum flyback on-time
-
t
leb
-
ns
t
on(fb)max
maximum flyback on-time
32
40
48
約
Oscillator flyback
f
sw(fb)max
maximum flyback switching
frequency
100
125
150
kHz
V
start(VCO)FBCTRL
VCO start voltage on pin
FBCTRL
1.3
1.5
1.7
V
V
hys(FBCTRL)
hysteresis voltage on pin
FBCTRL
[4]
-
60
-
mV
擵
VCO(FBCTRL)
VCO voltage difference on pin
FBCTRL
-
-0.1
-
V
Peak current control flyback (pin FBCTRL)
V
FBCTRL
voltage on pin FBCTRL
for maximum flyback peak current
1.85
2.0
2.15
V
V
to(FBCTRL)
time-out voltage on pin
FBCTRL
enable voltage
-
2.5
-
V
trip voltage
4.2
4.5
4.8
V
R
int(FBCTRL)
internal resistance on pin
FBCTRL
-
3
-
k?/DIV>
I
O(FBCTRL)
output current on pin FBCTRL V
FBCTRL
= 0 V
1.4
1.19 0.93 mA
V
FBCTRL
= 2 V
0.6
0.5
0.4
mA
I
to(FBCTRL)
time-out current on pin
FBCTRL
V
FBCTRL
= 2.6 V
36
30
24
糀
V
FBCTRL
= 4.1 V
34.5 28.5 22.5 糀
Valley switching flyback (pin HV)
(擵/攖)
vrec(fb)
flyback valley recognition
voltage change with time
75
-
+75
V/約
Table 5.
Characteristics &continued
T
amb
= 25 ?/SPAN>C; V
CC
= 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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