TLE4274DV33ATMA2 Infineon

Voltage Regulator TLE 4274 / 3.3V 2.5V Features Output voltage: 3.3 V/2.5 V 4% Current capability 400 mA Very low current consumption Short-circuit proof Reverse polarity proof Suitable for use in automotive electronics Green Product (RoHS compliant) P-SOT223-4 AEC Qualified Functional Description The TLE 4274 / 3.3V 2.5V is a voltage regulator available in a SOT223 and TO252 package. The IC regulates an input voltage up to 40 V to V = 3.3 V/2.5 V. The Qrated maximum output current is 400 mA. The IC is short- circuit proof and has a shutdown circuit protecting it P-TO252-3-1 against overtemperature. The TLE 4274 is also available as 5 V, 8.5 V and 10 V version. Please refer to the data sheet TLE 4274. Dimensioning Information on External Components The input capacitor C is necessary for compensating line influences. Using a resistor of I approx. 1 in series with C , the oscillating of input inductivity and input capacitance can I be damped. The output capacitor C is necessary for the stability of the regulation circuit. Q Stability is guaranteed for capacities C 10 F with an ESR of 2.5 within the Q operating temperature range. Type Package TLE 4274 GSV33 PG-SOT223-4 TLE 4274 DV33 PG-TO252-3-11 TLE 4274 GSV25 PG-SOT223-4 Data Sheet 1 Rev. 2.3, 2008-03-10 TLE 4274 / 3.3V 2.5V Circuit Description The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The IC also includes a number of internal circuits for protection against: Overload Overtemperature Reverse polarity PG-TO252-3-11 (D-PAK) PG-SOT223-4 GND 1 GND 2 4 GND Q 3 13 AEP02282 Q AEP02561 Figure 1 Pin Configuration (top view) Table 1 Pin Definitions and Functions Pin No. Symbol Function 1I Input block to ground directly at the IC with a ceramic capacitor. 2, 4 GND Ground PG-TO252-3-11: internally connected to heatsink 3Q Output block to ground with capacitor C 10 F, ESR 2.5 Q Data Sheet 2 Rev. 2.3, 2008-03-10