TLE4275G V33 Infineon Technologies, TLE4275G V33 Datasheet - Page 5

• Manufacturer Part Number: TLE4275G V33
• Description: IC REG LDO 3.3V 400MA TO263-5
• Manufacturer: Infineon Technologies

Specifications of TLE4275G V33

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: 4.4 ~ 42 V
• Voltage - Dropout (typical): 0.25V @ 300mA
• Number Of Regulators: 1
• Current - Output: 400mA (Max)
• Current - Limit (min): 450mA
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-5, D²Pak (5 leads + Tab), TO-263BA
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 42 V
• Output Voltage: 3.3 V
• Output Type: Fixed
• Dropout Voltage (max): 0.5 V at 300 mA
• Output Current: 450 mA
• Line Regulation: 15 mV
• Load Regulation: 30 mV
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SP000262524; TLE4275G V33; TLE4275G V33INTR

3
3.1
The output voltage
transistor accordingly. The control loop stability depends on the output capacitor
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
ESR
An input capacitor
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
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.
Figure 3
Datasheet
CQ
vs. Output Current
C
Supply
I
Block Description and Electrical Characteristics
Voltage Regulator
Block Diagram Voltage Regulator Circuit
C
V
I
Q
Blo c k Di a gram _Vol tag eReg ul a to r.v s d
is strongly recommended to buffer line influences. Connect the capacitors close to the IC
I
is controlled by comparing a portion of it to an internal reference and driving a PNP pass
I
Q
”. Also, the output capacitor shall be sized to buffer load transients.
Saturation Control
Current Limitation
Temperature
Shutdown
5
Reference
GND
Bandgap
Block Description and Electrical Characteristics
V
I
= 22 V.
Q
Regulated Output Voltage
ESR
C
C
Q
, the load current, the chip
}
C
Rev. 1.0, 2006-09-22
Q
TLE 4275 V33
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