L5963DN-EHT
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STMicroelectronics L5963DN-EHT

Manufacturer No:
L5963DN-EHT
Manufacturer:
STMicroelectronics
Package:
Tape & Reel (TR)
Description:
IC REG TRP BCK/LNR SYNC PWRSSO36
Delivery:
Payment:
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Product Introduction

Overview

The L5963DN-EHT, produced by STMicroelectronics, is a dual monolithic switching regulator designed specifically for automotive applications. This IC integrates two step-down synchronous switching voltage regulators with internal power switches, a low drop-out linear regulator (LDO), and a high side driver. It is tailored to meet the stringent requirements of the automotive sector, including load dump protection and a wide input voltage range.

The device can operate directly from the vehicle battery and features adjustable voltage detectors and voltage supervisors. The regulators can work in free-run condition or synchronize to an external clock, reducing AM and FM interferences and allowing the use of small, low-cost inductors and capacitors.

Key Specifications

Parameter Value
Input Voltage Range 3.5 V to 26 V
Switching Frequency 250 kHz (free-run), 250 kHz to 2 MHz (synchronization range)
Minimum Output Voltage 1 V
Load Current Up to 3.0 A
LDO Maximum Current 250 mA
Operating Temperature Range -40°C to 85°C
Package PowerSSO 36
Grade Automotive
RoHS Compliance Ecopack2

Key Features

  • AEC-Q100 qualified for automotive applications
  • Two step-down synchronous switching voltage regulators with internal power switches
  • Internal high-side and low-side NDMOS
  • Integrated soft-start and independent hardware enable pins
  • 180° PWM output phase shift between the two DC/DC regulators
  • Programmable switching frequency divider by 1, 2, 4, or 8
  • Power good function and adjustable voltage detector outputs
  • One standby/linear regulator with backup function
  • High side driver with 0.5 V max drop at 0.5 A
  • Protection against short to ground, battery, loss of ground, and unsupplied short to battery
  • Programmable under-voltage battery detector and independent thermal protection on all regulators
  • Extremely low quiescent current in standby conditions (25 μA typical)

Applications

The L5963DN-EHT is specifically designed for automotive applications where reliability, load dump protection, and a wide input voltage range are critical. It is suitable for various automotive systems that require robust power management, including infotainment systems, driver assistance systems, and other vehicle electronics.

Q & A

  1. What is the input voltage range of the L5963DN-EHT?

    The input voltage range is from 3.5 V to 26 V.

  2. What is the maximum load current for each DC/DC regulator?

    The maximum load current is up to 3.0 A.

  3. What is the operating temperature range of the L5963DN-EHT?

    The operating temperature range is from -40°C to 85°C.

  4. Does the L5963DN-EHT have built-in protection features?

    Yes, it has protection against short to ground, battery, loss of ground, and unsupplied short to battery, as well as independent thermal protection on all regulators.

  5. Can the switching frequency be synchronized?

    Yes, the DC/DC regulators can synchronize to an external clock within a range of 250 kHz to 2 MHz.

  6. What is the quiescent current in standby conditions?

    The quiescent current in standby conditions is typically 25 μA.

  7. Is the L5963DN-EHT AEC-Q100 qualified?

    Yes, it is AEC-Q100 qualified for automotive applications.

  8. What package options are available for the L5963DN-EHT?

    The device is available in the PowerSSO 36 package.

  9. Does the L5963DN-EHT have a high side driver?

    Yes, it includes a high side driver with a maximum drop of 0.5 V at 0.5 A.

  10. Can the output voltage be programmed?

    Yes, the output voltage can be programmed using an external resistor divider.

Product Attributes

Topology:Step-Down (Buck) Synchronous (2), Linear (LDO) (1)
Number of Outputs:3
Frequency - Switching:250kHz ~ 2MHz
Voltage/Current - Output 1:Programmable, 2.5A
Voltage/Current - Output 2:Programmable, 3A
Voltage/Current - Output 3:Programmable, 250mA
w/LED Driver:No
w/Supervisor:Yes
w/Sequencer:Yes
Voltage - Supply:3.5V ~ 26V
Operating Temperature:-40°C ~ 105°C
Mounting Type:Surface Mount
Package / Case:36-PowerFSOP (0.295", 7.50mm Width)
Supplier Device Package:PowerSSO-36 EPU
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Similar Products

Part Number L5963DN-EHT L5963DN-EHX L5963D-EHT
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics
Product Status Active Active Obsolete
Topology Step-Down (Buck) Synchronous (2), Linear (LDO) (1) Step-Down (Buck) Synchronous (2), Linear (LDO) (1) Step-Down (Buck) Synchronous (2), Linear (LDO) (1)
Number of Outputs 3 3 3
Frequency - Switching 250kHz ~ 2MHz 250kHz ~ 2MHz 250kHz ~ 2MHz
Voltage/Current - Output 1 Programmable, 2.5A Programmable, 2.5A Programmable, 2.5A
Voltage/Current - Output 2 Programmable, 3A Programmable, 3A Programmable, 3A
Voltage/Current - Output 3 Programmable, 250mA Programmable, 250mA Programmable, 250mA
w/LED Driver No No No
w/Supervisor Yes Yes Yes
w/Sequencer Yes Yes Yes
Voltage - Supply 3.5V ~ 26V 3.5V ~ 26V 3.5V ~ 26V
Operating Temperature -40°C ~ 105°C -40°C ~ 105°C -40°C ~ 105°C
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 36-PowerFSOP (0.295", 7.50mm Width) 36-PowerFSOP (0.295", 7.50mm Width) 36-PowerFSOP (0.295", 7.50mm Width)
Supplier Device Package PowerSSO-36 EPU PowerSSO-36 EPU PowerSSO-36 EPU

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