U6262B

Features:

Voltage outputs
  20-V step-up converter with I 1.2 A
  7-V step-down converter with I 400 mA
  5-V logic supply with I 14 mA
  5-V reference voltage with I 14 mA
Logic input ENABLE
  Enables the step-up converter
Analog input VKL15
  Energy-reserve mode switches off the step-up converter at V_Batt < 5.25 V
  Controls start-up behavior
Logic output NRES
  N-reset output with over/ under voltage monitoring of both 5-V supplies


Description

The U6262B is a multifunctional power supply IC which provides four different voltages dedicated to supply components of complex microcontroller systems. Supplied by a battery voltage in the wide range from 6 V to 26 V, the U6229B generates typically 20 V with a step-up converter, PWM, external power MOSFET and 150 H inductivity. This voltage of U6262B is fed to a step-down converter with external 150 H inductivity to generate a 7-V auxiliary voltage with a small ripple. By means of this voltage, two linear regulators with only a small power dissipation provide a constant 5-V (±3%) supply for microcontrollers and an even more accurate 5-V (±2%) supply as a reference for sensors and a/d converters.