Voltage regulator with dc-dc plus switchable linear regulators controlled by I2C bus

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 < 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 I2 C bus (VLR1)
    • 3.3/10 V @ 1 A switched linear regulator enabled and selected through I2 C bus (VLR2)
  • 2 High side drivers (0.5 V max drop @ 0.5 A) enabled through I2 C 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)
  • I2 C bus
  • Enable pin to drive switching regulator and I2 C 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

Circuit Diagram

0 Download



Technical Documentation

Product Specifications
Description Version Size
DS6613 DS6613: Multiple linear/switching voltage regulator for car-radio 3.0 250 KB
Application Notes
Description Version Size
AN2817 AN2817: Guidelines for application design using L5962 3.0 1 MB

Publications and Collaterals

Description Version Size
Automotive infotainment power management 1.0 281 KB
Automotive multichannel power management ICs 1.0 698 KB
Selection Guides
Description Version Size
Power amplifiers and voltage regulators 750 KB
Smart power solutions for car body applications 4.0 3 MB
Description Version Size
Driving smart power in automotive 1.0 1 MB
Support & Community

Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L5962 PowerSO 36 Tube 85 -40 Active 4.04 1000 NEC EAR99 MALAYSIA MORE INFO
L5962TR PowerSO 36 Tape And Reel 85 -40 Active 4.04 1000 NEC EAR99 MALAYSIA MORE INFO

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L5962 ActivePowerSO 36AutomotiveEcopack2 0
L5962TR ActivePowerSO 36AutomotiveEcopack2 0

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.