Integrated Circuit Tle4274gsv33 of Voltage Regulator IC

Prod Model:	TLE4274GSV33

Product Description

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
 
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 VQrated = 3.3 V/2.5 V. The
maximum output current is 400 mA. The IC is shortcircuit
proof and has a shutdown circuit protecting it
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 CI
 is necessary for compensating line influences. Using a resistor of
approx. 1 in series with CI
, the oscillating of input inductivity and input capacitance can
be damped. The output capacitor CQ is necessary for the stability of the regulation circuit.
Stability is guaranteed for capacities CQ ≥ 10 µF with an ESR of ≤ 2.5 within the
operating temperature range.
 
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