L5963

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Automotive dual monolithic switching regulator with LDO and HSD

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Product overview

Description

L5963 is a dual step-down switching regulator with internal power switches, high side driver and a low drop-out linear regulator that can operate as standby regulator or normal LDO.

All the regulators can be connected directly to the vehicle battery. In addition to an adjustable voltage detector, voltage supervisors are available.

The two DC-DC converters can work in free-run condition or synchronize themselves to an external clock. DC/DCs' PWM outputs have a 180° phase shift.

The high operating frequency allowed by the synchronization input helps to reduce AM and FM interferences and grants the use of small and low cost inductors and capacitors.

This IC finds application in the automotive segment, where load dump protection and wide input voltage range are mandatory.

A slug-up package option is available for applications which require heatsink use.

In standby condition the device guarantees extremely low quiescent current (25 μA typical @ -40 °C < T < 85 °C)

  • All features

    • AEC-Q100 qualified
    • Two step-down synchronous switching voltage regulators with internal power switches:
      • Wide input voltage range (from 3.5 V to 26 V)
      • Internal high-side/ low-side NDMOS
      • 1 V minimum output
      • 3.0 A load current
      • 250 kHz free-run frequency
      • 250 kHz < f < 2 MHz synchronization range
      • Integrated soft-start
      • Independent hardware enable pins
      • Independent power supply
      • 180° PWM output phase shift
      • Programmable switching frequency divider by 1, 2, 4 or 8 between the two DC/DC regulators
      • Power good function
    • One standby / linear regulator
      • Output voltage programmable with external resistor divider
      • 250 mA maximum current capability
      • Backup function
      • Power good function
    • One high side driver
      • 0.5 V max drop @ 0.5 A
      • Protected against short to ground and battery, loss of ground and battery, unsupplied short to battery
    • Programmable under voltage battery detector
      • Under voltage threshold adjustable through dedicated pin (VDIN)
    • Load dump protection
    • Independent thermal protection on all regulators
    • Independent current limit on all regulators
    • Extremely low quiescent current in standby conditions
    • Power good / adjustable voltage detector outputs to realize customized power up/down sequences

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STMicroelectronics - L5963

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L5963DN-EHT
Active
PowerSSO 36 Automotive Ecopack2
L5963DN-EHX
Active
PowerSSO 36 Automotive Ecopack2
L5963Q-V0T
Active
VFQFPN 48 7x7x1.0 mm Automotive Ecopack2
L5963Q-V0Y
Active
VFQFPN 48 7x7x1.0 mm Automotive Ecopack2
L5963U-KBT
Active
PowerSSO 36 Automotive Ecopack2
L5963U-KBX
Active
PowerSSO 36 Automotive Ecopack2

L5963DN-EHT

Package:

PowerSSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L5963DN-EHX

Package:

PowerSSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L5963Q-V0T

Package:

VFQFPN 48 7x7x1.0 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 48 7x7x1.0 mm

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L5963Q-V0Y

Package:

VFQFPN 48 7x7x1.0 mm

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 48 7x7x1.0 mm

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L5963U-KBT

Package:

PowerSSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L5963U-KBX

Package:

PowerSSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) 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.

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