L5962
Multiple linear/switching voltage regulator for car-radio
Features
■ Step-down synchronous switching voltage regu...
L5962
Multiple linear/switching voltage
regulator for car-radio
Features
■ Step-down synchronous switching voltage
regulator
– Internal high-side/ Low-side NDMOS
– 1.2 < Vout < 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 < fsw < 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
PowerSO36 (slug-up)
■ 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
Description
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 Scho...