L5962

L5962 is a very versatile device exploiting BCD technology characteristics to provide a complete set of regulated voltages covering all the needs of a car-radio set.In standby condition the device guarantees extremely low quiescent current (90 μA max -40 ˚C < T < 85 ˚C) and minimum operating voltage (4.5 V using an external Schottky diode for the back-up function).

Key Features

• Step-down synchronous switching voltage regulator
  • Internal high-side/ Low-side NDMOS
  • 1.2 < V_out < 8 V selectable through external resistors
  • 1.2/2.5 A load current selected through dedicated pin
  • 185 kHz free-run frequency
  • SYNC function (220 < f_sw < 400 kHz)
• Linear regulators
  • 3.3/5 V @ 150 mA standby regulator selected through dedicated pin (VSTBYSEL)
  • 5/8.5 V @ 350 mA switched linear regulator enabled and selected through I²C bus (VLR1)
  • 3.3/10 V @ 1 A switched linear regulator enabled and selected through I²C bus (VLR2)
• 2 High side drivers (0.5 V max drop @ 0.5 A) enabled through I²C bus and equipped with protection circuit against:
  • short to ground and battery
  • loss of ground and battery
  • unsupplied short to battery
• Reset function with configurable delay (RST, RSTDLY)
• I²C bus
• Enable pin to drive switching regulator and I²C bus logic
• Under/over voltage battery detector (VBATVW)
  • Under voltage threshold adjustable through dedicated pin (LVWIN)
• Load dump protection
• Independent thermal protection on all regulators