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L5962 Dataheets PDF



Part Number L5962
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description Multiple linear/switching voltage regulator
Datasheet L5962 DatasheetL5962 Datasheet (PDF)

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 s.

  L5962   L5962



Document
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 Schottky diode for the back-up function). Table 1. Device summary Order code L5962 L5962TR Package PowerSO36 PowerSO36 Packing Tray Tape and reel September 2013 Doc ID 16819 Rev 3 1/24 www.st.com 1 Contents Contents L5962 1 Block and application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.1 Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.1.1 Linear regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.1.2 Switching regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4.2 High side drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 5 Operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..


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