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TEA1733T датащи(PDF) 11 Page - NXP Semiconductors

номер детали TEA1733T
подробное описание детали  GreenChip SMPS control IC
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
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TEA1733T датащи(HTML) 11 Page - NXP Semiconductors

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TEA1733T_TEA1733LT_1
© NXP B.V. 2009. All rights reserved.
Objective data sheet
Rev. 01 — 26 October 2009
11 of 17
NXP Semiconductors
TEA1733T; TEA1733LT
GreenChip SMPS control IC
IO(PROTECT)
output current on pin
PROTECT
VVINSENSE =Vlow(PROTECT)
−34
−32
−30
µA
VVINSENSE =Vhigh(PROTECT)
87
107
127
µA
Vclamp(PROTECT)
clamp voltage on pin
PROTECT
II(PROTECT) = 200 µA
[1] 3.5
4.1
4.7
V
Peak current control (pin CTRL)
VCTRL
voltage on pin CTRL
for minimum flyback peak
current
1.5
1.8
2.1
V
for maximum flyback peak
current
3.4
3.9
4.3
V
Rint(CTRL)
internal resistance on
pin CTRL
57
9k
IO(CTRL)
output current on pin
CTRL
VCTRL = 1.4 V
−0.7
−0.5
−0.3
mA
VCTRL = 3.7 V
−0.28
−0.2
−0.12
mA
Pulse width modulator
fosc
oscillator frequency
62
66.5
71
kHz
fmod
modulation frequency
210
280
350
Hz
∆fmod
modulation frequency
variation
± 3
± 4
± 5
kHz
δmax
maximum duty cycle
68.5
72
79
%
Vstart(red)f
frequency reduction
start voltage
pin CTRL
1.5
1.8
2.1
V
Vδ(zero)
zero duty cycle voltage
pin CTRL
1.25
1.55
1.85
V
Overpower protection (pin OPTIMER)
Vprot(OPTIMER)
protection voltage on pin
OPTIMER
2.4
2.5
2.6
V
Iprot(OPTIMER)
protection current on pin
OPTIMER
no overpower situation
100
150
200
µA
overpower situation
−12.2
−10.7
−9.2
µA
Restart timer (pin OPTIMER)
Vrestart(OPTIMER)
restart voltage on pin
OPTIMER
low level
0.8
1.2
1.6
V
high level
4.1
4.5
4.9
V
Irestart(OPTIMER)
restart current on pin
OPTIMER
charging OPTIMER
capacitor
−127
−107
−87
µA
discharging OPTIMER
capacitor
−0.1
0
0.1
µA
Current sense (pin ISENSE)
Vsense(max)
maximum sense voltage
∆V/∆t=50mV/µs;
VVINSENSE = 0.78 V
0.48
0.51
0.54
V
∆V/∆t = 200 mV/µs;
VVINSENSE = 0.78 V
0.50
0.53
0.56
V
Vth(sense)opp
overpower protection
sense threshold voltage
370
400
430
mV
∆VISENSE/∆t
slope compensation
voltage on pin ISENSE
17
25
33
mV/
µs
Table 5.
Characteristics …continued
Tamb =25 °C; VCC = 20 V; all voltages are measured with respect to ground (pin 6); currents are positive when flowing into
the IC; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit


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