LT8602

RECOMMENDED FOR NEW DESIGNS

42V Quad Monolithic Synchronous Step-Down Regulator

Data Sheet (Rev. C) Product Selection Table
Part Models
14
1ku List Price
Starting From $6.37
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Part Details

  • 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
LT8602
42V Quad Monolithic Synchronous Step-Down Regulator
LT8602 Application Circuit LT8602 Performance Graph LT8602 Performance Graph LT8602 Pin Configuration LT8602 Pin Configuration
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 4

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2975
RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Input Current and Energy Measurement
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LT4363
RECOMMENDED FOR NEW DESIGNS High Voltage Surge Stopper with Current Limit
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT8602

LTpowerCAD 2

LTspice

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.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
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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Product Details

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.


 
DC1949A
LT8602 Demo Board | Quad Sync Buck; 5.5V ≤ VIN ≤ 42V, VOUT1/VOUT2/VOUT3/VOUT4 = 5V/3.3V/ 1.8V/1.2V @ 1A
DC1949A Demo Board DC1949A Demo Board DC1949A Demo Board DC1949A Demo Board DC1949A - Schematic

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