TEA1533AT Philips Semiconductors, TEA1533AT Datasheet - Page 14

• Manufacturer Part Number: TEA1533AT
• Description: GreenChipTMII SMPS control IC
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2002 Aug 23
V
Duty cycle control (pin CTRL)
V
V
I
Burst mode standby (pin CTRL)
V
I
I
t
Valley switch (pin DRAIN)
t
Overcurrent and short winding protection (pin I
V
t
V
t
I
Overvoltage protection (pin DEM)
I
Overpower protection (pin DEM)
I
I
prot(CTRL)
th(burst)(on)
th(burst)(off)
burst-blank
valley-swon
PD
leb
SS
OVP(DEM)
OPP(DEM)
OPP50%(DEM)
V/ t
vco(max)
CTRL(min)
CTRL(max)
th(burst)(on)
sense(max)
swp
GreenChip
SYMBOL
valley
peak voltage on pin I
the frequency is equal to f
minimum voltage on pin CTRL for
maximum duty cycle
maximum voltage on pin CTRL for
minimum duty cycle
protection current on pin CTRL
burst mode standby active
threshold voltage
burst mode standby active current
burst mode standby inactive
current
burst mode standby blanking time
valley recognition voltage change
delay from valley recognition to
switch-on
maximum source voltage OCP
propagating delay from detecting
V
short winding protection voltage
blanking time for current and
short winding protection
soft start current
OVP current on pin DEM
OPP current on pin DEM to start
OPP correction, set by the
demagnetization resistor R
OPP current on pin DEM, where
maximum source voltage is
limited to 0.3 V
TM
sense(max)
II SMPS control IC
PARAMETER
to switch-off
sense
, where
osc(l)
DEM
sense
V
I
V
set by resistor R
Section “OverVoltage
Protection (OVP)”
set by resistor R
Section “OverPower
Protection (OPP)”
burst
V/ t = 0.1 V/ s
V/ t = 0.5 V/ s
CTRL
sense
)
14
= 6 mA
CONDITIONS
= 1.5V
< 0.5 V
DEM
DEM
, see
, see
TEA1533T; TEA1533AT
3.3
16
25
0.48
0.83
300
45
54
MIN.
1
85
(1)
VCO
1.0
1.5
3.8
30
150
0.52
140
0.88
370
60
60
0.8
24
100
TYP.
(1)
1
Product specification
25
-0.5
4.3
6
35
0.56
185
0.96
440
75
66
MAX.
85
mV
V
V
V
mA
mA
V/ s
ns
V
ns
V
ns
UNIT
A
s
A
A
A
A