tea1553t NXP Semiconductors, tea1553t Datasheet - Page 19

• Manufacturer Part Number: tea1553t
• Description: Tea1553t Greenchip Ii Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 5.
T
the IC, unless otherwise specified.
TEA1553T_1
Product data sheet
Symbol
I
I
I
I
Demagnetization management (pin 16)
V
V
V
t
Pulse width modulator
t
t
Oscillator
f
f
V
V
Duty cycle control (pin 14)
V
V
I
5 V output (pin 12)
V
I
LOCK input (pin 13)
ch(high)
ch(low)
restart
CC(oper)
sup(xfmr_ring)
on(min)
on(max)
osc(low)
osc(high)
CTRL
O(VCC5V)
amb
DEM
CL(neg)
CL(pos)
VCO(start)
VCO(max)
min( max)
max( min)
O(VCC5V)
= 25 C; V
Characteristics
CC
= 15 V; all voltages are measured with respect to ground (pin 11); currents are positive when flowing into
Parameter
high charging current
low charging current
restart current
operating supply
current
voltage on pin DEM
negative clamp
voltage
positive clamp voltage voltage on pin DEM,
transformer ringing
suppression time
minimum on-time
maximum on-time
low oscillator
frequency
high oscillator
frequency
start VCO voltage
maximum VCO
voltage
minimum voltage
(maximum duty cycle)
maximum voltage
(minimum duty cycle)
current on pin CTRL
output voltage on pin
VCC5V
output current on pin
VCC5V
…continued
Conditions
V
V
V
3 V < V
V
V
no load on pin DRIVER
voltage on pin DEM,
I
I
V
V
peak voltage at pin
ISENSE, where frequency
reduction starts. See
Figure 6
peak voltage at pin
ISENSE, where the
frequency is equal to
f
input current, V
CTRL = 1.5 V
current on pin
VCC5V = 1 mA
I
I
osc(low)
I
CC
I
I
th(UVLO)
I
I
on pin DEM = 500 A
on pin DEM = 1 mA
on pin DRAIN > 100 V;
on pin DRAIN > 100 V;
on pin DRAIN > 100 V;
on pin CTRL > 1.5 V
on pin CTRL < 1 V
< 3 V
Rev. 01 — 3 July 2007
CC
and
< V
< V
CC
Figure 8
th(UVLO)
I
< V
on pin
startup
Min
1.1
50
0.5
1.1
-
40
20
100
-
-
-
-
4.75
1.2
1.2
650
0.5
1
1.0
[1]
GreenChip II SMPS control IC
Typ
1.3
80
0.7
1.5
t
50
25
125
VCO
VCO
1.0
1.5
5.0
-
leb
1
0.75
550
0.25
0.8
1
1
50 -
TEA1553T
Max
1.5
110
0.9
1.9
-
60
30
150
-
-
-
5.25
-
© NXP B.V. 2007. All rights reserved.
0.8
0.45
450
0.05
0.5
Unit
mA
mA
mA
mV
V
V
ns
kHz
kHz
mV
mV
V
V
V
mA
19 of 27
A
s
s
A