TEA1733CT Datasheet PDF - NXP


www.Datasheet-PDF.com

TEA1733CT
NXP

Part Number TEA1733CT
Description GreenChip SMPS control IC
Page 20 Pages

TEA1733CT datasheet pdf
View PDF for PC
TEA1733CT pdf
View PDF for Mobile


No Preview Available !

TEA1733CT
GreenChip SMPS control IC
Rev. 2 — 16 July 2013
Product data sheet
1. General description
The TEA1733CT is a low cost Switched Mode Power Supply (SMPS) controller IC
intended for flyback topologies. It operates in fixed frequency mode. To reduce
ElectroMagnetic Interference (EMI), frequency jitter has been implemented. Slope
compensation is integrated for Continuous Conduction Mode (CCM) operation.
The TEA1733CT includes OverPower Protection (OPP). This enables the controller to
operate under overpower situations for a limited amount of time.
Two pins, VINSENSE and PROTECT, are reserved for protection purposes. Input
UnderVoltage Protection (UVP) and OverVoltage Protection (OVP), output OVP and
OverTemperature Protection (OTP) can be implemented using a minimal number of
external components.
At low power levels the primary peak current is set to 25 % of the maximum peak current
and the switching frequency is reduced to limit switching losses. The combination of fixed
frequency operation at high output power and frequency reduction at low output power
provides high-efficiency over the total load range.
The TEA1733CT enables low cost, highly efficient and reliable supplies for power
requirements up to 75 W to be designed easily and with a minimum number of external
components.
2. Features and benefits
2.1 Features
SMPS controller IC enabling low-cost applications
Large input voltage range (12 V to 30 V)
Very low supply current during start-up and restart (typically 10 A)
Low supply current during normal operation (typically 0.5 mA without load)
Overpower or high/low line compensation
Adjustable overpower time-out
Adjustable overpower restart timer
Fixed switching frequency with frequency jitter to reduce EMI
Frequency reduction with fixed minimum peak current to maintain high-efficiency at
low output power levels
Slope compensation for CCM operation
Low and adjustable OverCurrent Protection (OCP) trip level



No Preview Available !

NXP Semiconductors
TEA1733CT
GreenChip SMPS control IC
Adjustable soft start operation
Two protection inputs (for example: 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
TEA1733CT
SO8
plastic small outline package; 8 leads; body width 3.9 mm
Version
SOT96-1
TEA1733CT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 16 July 2013
© NXP B.V. 2013. All rights reserved.
2 of 20



No Preview Available !

NXP Semiconductors
5. Block diagram
TEA1733CT
GreenChip SMPS control IC
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
Q
R
set
stop
δmax
restart
ISENSE
55
μA
4
BLANK
soft start LEB
soft start
Vctrl(Ipeak)
OCP
stop
OVERPOWER
CORRECTION
latch
VINSENSE
restart
S
Q
R
latch
S
Q
R
OTP
VCCstop
overpower
highvin
lowvin
prothigh
protlow
VCCstart
power down
lowvin
protlow
prothigh
protlow
highvin
latch reset
lowvin
DIGITAL CONTROL
0.50 V/0.80 V
32
μA
6
107
μA
PROTECT
3.52 V
0.72 V/0.94 V
5
VINSENSE
Fig 1. Block diagram
aaa-001529
TEA1733CT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 16 July 2013
© NXP B.V. 2013. All rights reserved.
3 of 20



No Preview Available !

NXP Semiconductors
6. Pinning information
6.1 Pinning
TEA1733CT
GreenChip SMPS control IC
VCC 1
GND 2
DRIVER 3
ISENSE 4
8 OPTIMER
7 CTRL
TEA1733CT
6 PROTECT
5 VINSENSE
aaa-001530
Fig 2. Pinning diagram SOT96-1 (SO8)
6.2 Pin description
Table 2. Pin description
Symbol
Pin
VCC
1
GND
2
DRIVER
3
ISENSE
4
VINSENSE
5
PROTECT
6
CTRL
7
OPTIMER
8
Description
supply voltage
ground
gate driver output
current sense input
input voltage protection input
general-purpose protection input
control input
overpower and restart timer
TEA1733CT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 16 July 2013
© NXP B.V. 2013. All rights reserved.
4 of 20




TEA1733CT datasheet pdf
Download PDF
TEA1733CT pdf
View PDF for Mobile


Similiar Datasheets : TEA1733 TEA1733AT TEA1733CT TEA1733L TEA1733LP TEA1733LT TEA1733MT TEA1733P TEA1733T

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Privacy Policy + Contact