TEA1733AT 데이터 시트보기 (PDF) - NXP Semiconductors.
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TEA1733AT Datasheet PDF : 18 Pages
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NXP Semiconductors
TEA1733AT
GreenChip SMPS control IC
9. Thermal characteristics
Table 4.
Symbol
Rth(j-a)
Rth(j-c)
Thermal characteristics
Parameter
thermal resistance from
junction to ambient
thermal resistance from
junction to case
10. Characteristics
Conditions
in free air; JEDEC test board
in free air; JEDEC test board
Typ
Unit
150
K/W
79
K/W
Table 5. Characteristics
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
Supply voltage management (pin VCC)
Vstartup
Vth(UVLO)
start-up voltage
undervoltage lockout
threshold voltage
18.6
20.6
11.2
12.2
22.6
V
13.2
V
Vclamp(VCC)
clamp voltage on pin activated during restart
-
Vstartup + 1 -
V
VCC
activated during latched
-
Vrst(latch) + 1 -
V
protection
Vhys
hysteresis voltage
ICC(startup)
start-up supply current
ICC(oper)
operating supply current
Vrst(latch)
latched reset voltage
Input voltage sensing (pin VINSENSE)
Vstartup − Vth(UVLO)
VCC < Vstartup
no load on pin DRIVER
8
9
5
10
0.45
0.55
4
5
10
V
15
μA
0.65
mA
6
V
Vstart(VINSENSE)
start voltage on pin
VINSENSE
detection level
0.89
0.94
0.99
V
Vdet(L)(VINSENSE)
LOW-level detection
voltage on pin
VINSENSE
0.68
0.72
0.76
V
Vdet(H)(VINSENSE)
HIGH-level detection
voltage on pin
VINSENSE
3.39
3.52
3.65
V
IO(VINSENSE)
output current on pin
VINSENSE
-
−20
-
nA
Vclamp(VINSENSE) clamp voltage on pin
VINSENSE
II(VINSENSE) = 50 μA
-
5.2
-
V
Protection input (pin PROTECT)
Vdet(L)(PROTECT)
LOW-level detection
voltage on pin
PROTECT
0.47
0.50
0.53
V
Vdet(H)(PROTECT)
HIGH-level detection
voltage on pin
PROTECT
0.75
0.8
0.85
V
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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