Stabilizator TLE 4275 GAU036

  5-V Low-Drop Voltage Regulator TLE 4275

  Preliminary Data
  Features
• Output voltage 5 V ± 2%
• Very low current consumption
• Power-on and undervoltage reset
• Reset low down to VQ = 1 V
• Very low-drop voltage
• Short-circuit-proof
• Reverse polarity proof
• Suitable for use in automotive electronics

   Functional Description

   The TLE 4275 is a monolithic integrated low-drop
voltage regulator in a 5 pin TO-package. An input
voltage up to 45 V is regulated to VQ = 5.0 V. The IC is
able to drive loads up to 450 mA and is short-circuit
proof. At over temperature the TLE 4275 is disabled by
the incorporated temperature protection. A reset signal
is generated for an output voltage VQ of typ. 4.65 V.
The delay time can be programmed by the external
delay capacitor.

   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:
• Overload
• Over-temperature
• Reverse polarity