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TEA1733AT Datasheet PDF : 18 Pages
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NXP Semiconductors
TEA1733AT
GreenChip SMPS control IC
Adjustable soft start operation
Two protection inputs (e.g. for input UVP and OVP, OTP and output OVP)
IC overtemperature protection
3. Applications
All applications requiring efficient and cost-effective power supply solutions up to
75 W.
4. Ordering information
Table 1. Ordering information
Type number
Package
Name
Description
TEA1733AT
SO8
plastic small outline package; 8 leads; body width 3.9 mm
5. Block diagram
Version
SOT96-1
1
VCC
22 V
2
GND
clamp
clamp
power down
21 V
VCCstart Vctrl(Ipeak)
400 mV
12 V
VCCstop
6V
DQ
driver
overpower
2.5 V
latch 5 V
restart
latch reset
OPP switch
TEMPERATURE
PROTECTION
OTP
RESTART
CONTROL
OPP switch
107 μA
set
δmax
OSCILLATOR
frequency reduction
OPTIMER
1.2 V / 4.5 V
Vctrl(Ipeak)
ANALOG
CONTROL
MODULATION
SLOPE
COMPENSATION
11 μA
8
OPTIMER
5.4 V
7 kΩ
7
CTRL
DRIVER
DRV
3
S set
Q
R
stop
δmax
restart
55
μA
4
ISENSE
BLANK
soft start LEB
soft start
Vctrl(Ipeak)
OVERPOWER
CORRECTION
OCP
stop
latch
VINSENSE
restart
S
Q
R
latch
S
Q
R
VCCstop
overpower
highvin
lowvin
VCCstart
power down
lowvin
protlow
OTP
prothigh
protlow
prothigh
protlow
highvin
latch reset
lowvin
DIGITAL CONTROL
32
μA
0.50 V/0.80 V 6
107
μA
PROTECT
3.52 V
0.72 V/0.94 V
5
VINSENSE
Fig 1. Block diagram
014aab259
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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