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PDF TLE4275V33 Data sheet ( Hoja de datos )
| Número de pieza | TLE4275V33 | |
| Descripción | Linear Voltage Regulator | |
| Fabricantes | Infineon | |
| Logotipo |  |
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Linear Voltage Regulator
3.3 V Fixed Output Voltage
TLE 4275 V33
Feature Overview
• Output voltage 3.3 V ± 2 %
• Current capability 400 mA
• Stable with ceramic output capacitor
• Reset circuit functional without supply voltage present
• Reset output active low down to VQ = 1 V
• Reset circuit sensing the output voltage
with programmable delay time
• Maximum input voltage -42 V ≤ VI ≤ +45 V
• ESD Resistivity 4 kV (Human Body Model)
• Reverse polarity protection
• Short circuit protection
• Overtemperature shutdown
• Automotive temperature range -40 °C ≤ Tj ≤ 150 °C
• Green Product (RoHS compliant)
• AEC qualified
The TLE 4275 V33 is a monolithic integrated low dropout fixed
output voltage regulator for loads up to 400mA. An integrated reset
generator with adjustable power-on delay time as well as several
protection circuits predestine the IC for supplying microprocessor
systems in an automotive environment.
PG-TO252-5-11
PG-TO263-5-1
Supply
I
TLE 4275 V33
Regulated
Output
Voltage
Q
+5V
Protection Bandgap
Circuits Reference
GND
Reset
Generator
D
CD
RO
Figure 1 Simplified Block Diagram and Typical Application
or:
CQ
Load
e. g.
Micro
Controller
GND
Type
TLE 4275 D V33
TLE 4275 G V33
Datasheet
Package
PG-TO252-5-11 (RoHS compliant)
PG-TO263-5-1 (RoHS compliant)
1 Rev. 1.1, 2015-01-15
1 page  
TLE 4275 V33
Block Description and Electrical Characteristics
3 Block Description and Electrical Characteristics
3.1 Voltage Regulator
The output voltage VQ is controlled by comparing a portion of it to an internal reference and driving a PNP pass
transistor accordingly. The control loop stability depends on the output capacitor CQ, the load current, the chip
temperature and the poles/zeros introduced by the integrated circuit. To ensure stable operation, the output
capacitor’s capacitance and its equivalent series resistor ESR requirements given in the table “Operating Range”
have to be maintained. For details see also the typical performance graph “Output Capacitor Series Resistor
ESRCQ vs. Output Current IQ”. Also, the output capacitor shall be sized to buffer load transients.
An input capacitor CI is strongly recommended to buffer line influences. Connect the capacitors close to the IC
terminals.
Protection circuitry prevent the IC as well as the application from destruction in case of catastrophic events. These
safeguards contain output current limitation, reverse polarity protection as well as thermal shutdown in case of
overtemperature.
In order to avoid excessive power dissipation that could never be handled by the pass element and the package,
the maximum output current is decreased at input voltages above VI = 22 V.
The thermal shutdown circuit prevents the IC from immediate destruction under fault conditions (e.g. output
continuously short-circuited) by switching off the power stage. After the chip has cooled down, the regulator
restarts. This leads to an oscillatory behaviour of the output voltage until the fault is removed. However, junction
temperatures above 150 °C are outside the maximum ratings and therefore significantly reduce the IC lifetime.
The TLE 4275 V33 allows a negative supply voltage. However, several small currents are flowing into the IC
increasing its junction temperature. This has to be considered for the thermal design, respecting that the thermal
protection circuit is not operating during reverse polarity conditions For details see typical performance graphs.
Supply
I
Saturation Control
Current Limitation
C
I
Temperature
Shutdown
Blo c k Dia gra m _Vo lta ge Re gu la tor.v s d
Q Regulated Output Voltage
Bandgap
Reference
GND
}C
ESR
C
Q
LOAD
Figure 3 Block Diagram Voltage Regulator Circuit
Datasheet
5 Rev. 1.1, 2015-01-15
5 Page 
5 Revision History
Revision Date
Changes
1.1 2015-01-15 Parameter 2.1.14 MSL Min. value changed from 3 to 1.
1.0 2006-09-22
TLE 4275 V33
Revision History
Datasheet
11 Rev. 1.1, 2015-01-15
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet TLE4275V33.PDF ] | |
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