LT8602
Info : RECOMMENDED FOR NEW DESIGNS
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LT8602

42V Quad Monolithic Synchronous Step-Down Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 14
1ku List Price Starting From $6.37
Features
  • Flexible Power Supply System Providing Four Outputs with a Wide Input Range
  • Two High Voltage Synchronous Buck Regulators:
    • 3V to 42V Input Voltage Range
    • Output Currents Up to 2.5A and 1.5A
    • High Efficiency Up to 93%
  • Two Low Voltage Synchronous Buck Regulators:
    • 2.6V to 5.5V Input Voltage Range
    • Output Currents Up to 1.8A and 94% Efficiency
  • Programmable Power-On Reset
  • Power Good Indicators
  • Resistor Programmable and Synchronizable 250kHz to 2.2MHz Switching Frequency
  • Low Ripple Burst Mode® Operation:
    • 30μA IQ at 12VIN
    • Output Ripple < 15mV
  • 2-Phase Clock Reduces Input Current Ripple
  • Available in Thermally Enhanced 40-Lead QFN (6mm × 6mm) Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LT8602 is a quad channel, current mode, monolithic buck switching regulator with a programmable power-on reset. All regulators are synchronized to a single oscillator with an adjustable frequency from 250kHz to 2.2MHz. The LT8602 can be configured for micropower Burst Mode operation or pulse-skipping operation at light load. Micropower operation results in quiescent current of 30μA with all four regulators operating in the application below.

The high voltage channels are synchronous buck regulators that operate from an input of 3V to 42V. The output currents are up to 1.5A (OUT1) and 2.5A (OUT2). The low voltage channels operate from an input of 2.6V to 5.5V. Internal synchronous power switches provide high efficiency with output currents up to 1.8A. The LT8602 uses a 2-phase clock with channels 1 and 3 operating 180° from channels 2 and 4 to reduce input ripple current on both HV and LV inputs. All channels have cycle-by-cycle current limit, providing protection against shorted outputs. Thermal shutdown provides additional protection

The LT8602 is available in either a 40-lead 6mm × 6mm QFN or a 48-Lead 7mm × 7mm LQFP package.

APPLICATIONS

  • Automotive Systems
  • Distributed Supply Regulation
  • Industrial Controls and Power Supplies
Part Models 14
1ku List Price Starting From $6.37

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Documentation

Documentation

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Product Lifecycle

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Apr 6, 2021

- 21_0046

Transfer of LQFP and LQFP_EP from AEM to AET

LT8602ELXE#PBF

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PRODUCTION

Apr 11, 2019

- 19_0067

Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8602ELXE#PBF

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Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Apr 6, 2021

- 21_0046

arrow down

Transfer of LQFP and LQFP_EP from AEM to AET

LT8602ELXE#PBF

PRODUCTION

LT8602ILXE#PBF

PRODUCTION

Apr 11, 2019

- 19_0067

arrow down

Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8602ELXE#PBF

PRODUCTION

LT8602EUJ#PBF

PRODUCTION

LT8602EUJ#TRPBF

PRODUCTION

LT8602ILXE#PBF

PRODUCTION

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PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC1949A

LT8602 Demo Board | Quad Sync Buck; 5.5V ≤ VIN ≤ 42V, VOUT1/VOUT2/VOUT3/VOUT4 = 5V/3.3V/ 1.8V/1.2V @ 1A

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DC1949A

LT8602 Demo Board | Quad Sync Buck; 5.5V ≤ VIN ≤ 42V, VOUT1/VOUT2/VOUT3/VOUT4 = 5V/3.3V/ 1.8V/1.2V @ 1A

LT8602 Demo Board | Quad Sync Buck; 5.5V ≤ VIN ≤ 42V, VOUT1/VOUT2/VOUT3/VOUT4 = 5V/3.3V/ 1.8V/1.2V @ 1A

Product Detail

Demonstration circuit 1949A is a quad power supply featuring the LT8602. LT8602 is a 42V quad monolithic synchronous step-down regulator. The demo circuit is designed for 5.0V, 3.3V, 1.8V, and 1.2V outputs from a nominal 12V input, with switching frequency set at 2MHz to avoid audio band. The 1.8V and 1.2V converters are powered from the 3.3V output. The 5V, 3.3V are powered from a wide range of 5.5V to 42V. The current capability is 2.5A for the 3.3V output, 1.5A for the 5V output, and 1.8A for the other outputs when running individually. Up to 1A load current can be applied to all the channels simultaneously without special cooling.


 


Tools & Simulations

Tools & Simulations 2

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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