tea1733mt NXP Semiconductors, tea1733mt Datasheet - Page 13

• Manufacturer Part Number: tea1733mt
• Description: Tea1733mt Greenchip Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 5.
T
the IC; unless otherwise specified.
TEA1733MT
Preliminary data sheet
Symbol
Pulse width modulator
f
f
Δf
δ
N
V
V
Overpower protection (pin OPTIMER)
V
I
Restart timer (pin OPTIMER)
V
I
Current sense (pin ISENSE)
V
V
ΔV
t
Overpower compensation (pin VINSENSE and pin ISENSE)
I
Soft start (pin ISENSE)
I
V
R
osc
mod
prot(OPTIMER)
restart(OPTIMER)
leb
opc(ISENSE)
start(soft)
amb
max
start(red)f
δ(zero)
prot(OPTIMER)
restart(OPTIMER)
sense(max)
th(sense)opp
start(soft)
cy(sw)δmax
start(soft)
mod
ISENSE
= 25
/Δt
°
C; V
Characteristics
CC
= 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into
Parameter
oscillator frequency
modulation frequency
modulation frequency
variation
maximum duty cycle
number of switching cycles
with maximum duty cycle
frequency reduction start
voltage
zero duty cycle voltage
protection voltage on pin
OPTIMER
protection current on pin
OPTIMER
restart voltage on pin
OPTIMER
restart current on pin
OPTIMER
maximum sense voltage
overpower protection sense
threshold voltage
slope compensation
voltage on pin ISENSE
leading edge blanking time
overpower compensation
current on pin ISENSE
soft start current
soft start voltage
soft start resistance
…continued
All information provided in this document is subject to legal disclaimers.
Conditions
pin CTRL
pin CTRL
no overpower situation
overpower situation
low level
high level
charging OPTIMER
capacitor
discharging OPTIMER
capacitor
ΔV/Δt = 50 mV/μs;
V
ΔV/Δt = 200 mV/μs;
V
ΔV/Δt = 50 mV/μs
V
V
V
V
V
voltage
VINSENSE
VINSENSE
VINSENSE
sense(max)
VINSENSE
sense(max)
CTRL
Rev. 1 — 4 February 2011
= 4 V; enable
=3 V;
= 0.78 V
= 0.78 V
= 1 V;
> 400 mV
> 400 mV
210
100
250
Min
85.5
±4
68.5
-
1.5
1.25
2.4
−12.2
0.8
4.1
−127
−0.1
0.48
0.50
370
20
-
-
−63
-
12
GreenChip SMPS control IC
Typ
91.5
280
±5
72
-
1.8
1.55
2.5
150
−10.7
1.2
4.5
−107
0
0.51
0.53
400
33
300
0.28
1.7
−55
V
-
sense(max)
TEA1733MT
© NXP B.V. 2011. All rights reserved.
Max
97.5
350
±6
79
8
2.1
1.85
2.6
200
−9.2
1.6
4.9
−87
0.1
0.54
0.56
430
46
350
-
-
−47
-
-
Hz
Unit
kHz
kHz
%
V
V
V
μA
μA
V
V
μA
μA
V
V
mV
mV/μs
ns
μA
μA
μA
V
kΩ
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