TEA1733AT データシートの表示（PDF） - NXP Semiconductors.
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TEA1733AT Datasheet PDF : 18 Pages
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NXP Semiconductors
TEA1733AT
GreenChip SMPS control IC
Table 5. Characteristics …continued
Tamb = 25 °C; VCC = 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
IO(PROTECT)
output current on pin
VPROTECT = Vlow(PROTECT)
−34
−32
PROTECT
VPROTECT = Vhigh(PROTECT)
87
107
Vclamp(PROTECT)
clamp voltage on pin
PROTECT
II(PROTECT) = 200 μA
[1] 3.5
4.1
−30
μA
127
μA
4.7
V
Peak current control (pin CTRL)
VCTRL
voltage on pin CTRL for minimum flyback peak
1.5
1.8
current
2.1
V
for maximum flyback peak
3.4
3.9
current
4.3
V
Rint(CTRL)
internal resistance on
pin CTRL
5
7
9
kΩ
IO(CTRL)
output current on pin
CTRL
Pulse width modulator
VCTRL = 1.4 V
VCTRL = 3.7 V
−0.7
−0.5
−0.28 −0.2
−0.3
mA
−0.12 mA
fosc
fmod
Δfmod
oscillator frequency
modulation frequency
modulation frequency
variation
85.5
91.5
210
280
±4
±5
97.5
kHz
350
Hz
±6
kHz
δmax
Vstart(red)f
maximum duty cycle
frequency reduction start pin CTRL
voltage
68.5
72
1.5
1.8
79
%
2.1
V
Vδ(zero)
zero duty cycle voltage pin CTRL
Overpower protection (pin OPTIMER)
1.25
1.55
1.85
V
Vprot(OPTIMER)
protection voltage on pin
OPTIMER
2.4
2.5
2.6
V
Iprot(OPTIMER)
protection current on pin no overpower situation
OPTIMER
overpower situation
100
−12.2
150
−10.7
200
μA
−9.2
μA
Restart timer (pin OPTIMER)
Vrestart(OPTIMER)
restart voltage on pin
OPTIMER
low level
high level
0.8
1.2
4.1
4.5
1.6
V
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)
Vth(sense)opp
maximum sense voltage ΔV/Δt = 50 mV/μs;
VVINSENSE = 0.78 V
ΔV/Δt = 200 mV/μs;
VVINSENSE = 0.78 V
overpower protection
sense threshold voltage
0.48
0.51
0.50
0.53
370
400
0.54
V
0.56
V
430
mV
ΔVISENSE/Δt
slope compensation
ΔV/Δt = 50 mV/μs
voltage on pin ISENSE
20
33
46
mV/μs
TEA1733AT
Preliminary data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 19 November 2010
© NXP B.V. 2010. All rights reserved.
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