tle4276-2 Infineon Technologies Corporation, tle4276-2 Datasheet - Page 2

• Manufacturer Part Number: tle4276-2
• Description: Low Drop Voltage Regulator
• Manufacturer: Infineon Technologies Corporation

Functional Description
The TLE 4276-2 is a low-drop voltage regulator in a TO package. The IC regulates an
input voltage up to 40 V to
output current is 400 mA. The IC can be switched off via the inhibit input, which causes
the current consumption to drop below 10 µA. The IC is short-circuit-proof and includes
temperature protection which turns off the device at overtemperature.
Dimensioning Information on External Components
The input capacitor
of approx. 1 Ω in series with
can be damped. The output capacitor
circuit. Stability is guaranteed at values
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 incorporates a number of internal circuits for protection against:
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Data Sheet
Overload
Overtemperature
Reverse polarity
C
I
is necessary for compensation of line influences. Using a resistor
V
Q,nom
C
I
, the oscillating of input inductivity and input capacitance
= 5.0 V (V50) or adjustable voltage (V). The maximum
C
Q
C
is necessary for the stability of the regulation
Q
2
≥ 22 µF and an ESR of ≤ 3 Ω within the
Rev. 1.1, 2007-09-21
TLE 4276-2