tea1738t NXP Semiconductors, tea1738t Datasheet - Page 13

• Manufacturer Part Number: tea1738t
• Description: Tea1738t; Tea1738lt Greenchip Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 5.
T
the IC; unless otherwise specified.
TEA1738T_TEA1738LT
Product data sheet
Symbol
I
V
Input voltage sensing (pin VINSENSE)
V
V
I
V
Protection input (pin PROTECT)
V
V
I
V
Peak current control (pin CTRL)
V
R
I
Pulse width modulator
f
f
Δf
δ
CC(oper)
O(VINSENSE)
O(PROTECT)
O(CTRL)
osc
mod
amb
max
rst(latch)
start(VINSENSE)
det(L)(VINSENSE)
clamp(VINSENSE)
det(L)(PROTECT)
det(H)(PROTECT)
clamp(PROTECT)
CTRL
int(CTRL)
mod
= 25
°
C; V
Characteristics
CC
= 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into
Parameter
operating supply
current
latched reset voltage
start voltage on pin
VINSENSE
LOW-level detection
voltage on pin
VINSENSE
output current on pin
VINSENSE
clamp voltage on pin
VINSENSE
LOW-level detection
voltage on pin
PROTECT
HIGH-level detection
voltage on pin
PROTECT
output current on pin
PROTECT
clamp voltage on pin
PROTECT
voltage on pin CTRL
internal resistance on
pin CTRL
output current on pin
CTRL
oscillator frequency
modulation frequency
modulation frequency
variation
maximum duty cycle
…continued
All information provided in this document is subject to legal disclaimers.
Conditions
no load on pin DRIVER;
δ = 2 %
no load on pin DRIVER;
δ = 25 %
detection level
I
V
V
)
I
for minimum flyback peak
current
for maximum flyback
peak current
V
V
peak power
high power
medium power
high power
I(VINSENSE)
I(PROTECT)
PROTECT
PROTECT
CTRL
CTRL
Rev. 2 — 14 January 2011
= 1.4 V
= 3.7 V
= V
= V
= 200 μA
= 50 μA
high(PROTECT
low(PROTECT)
TEA1738T; TEA1738LT
[1]
Min
-
-
4
0.89
0.68
-
-
0.47
0.75
−34
87
3.5
1.5
3.4
5
−0.7
−0.28
-
-
-
210
± 3
-
Typ
0.55
0.59
5
0.94
0.72
−9
5.2
0.50
0.8
−32
107
4.1
1.8
3.9
7
−0.5
−0.2
78
63
26.5
280
± 4
80
GreenChip SMPS control IC
-
-
350
Max
-
-
6
0.99
0.76
-
-
0.53
0.85
−30
127
4.7
2.1
4.3
9
−0.3
−0.12
-
± 5
-
© NXP B.V. 2011. All rights reserved.
V
V
V
kHz
kHz
Hz
Unit
mA
mA
V
nA
V
V
μA
μA
V
V
V
kΩ
mA
mA
kHz
kHz
%
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