LT8620

RECOMMENDED FOR NEW DESIGNS

65V, 2A Synchronous Step-Down Regulator with 2.5μA Quiescent Current

Data Sheet (Rev. C) Product Selection Table
Part Models
12
1ku List Price
Starting From $4.48
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Part Details

  • Wide Input Voltage Range: 3.4V to 65V
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 2.5μA IQ Regulating 12VIN to 3.3VOUT
    •  Output Ripple < 10mVP-P
  • High Efficiency Synchronous Operation:
    • 94% Efficiency at 1A, 12VIN to 5VOUT
    • 92% Efficiency at 1A, 12VIN to 3.3VOUT
  • Fast 30ns Minimum Switch-On Time
  • Low Dropout Under All Conditions: 250mV at 1A
  • Safely Tolerates Inductor Saturation in Overload
  • Low EMI
  • Adjustable and Synchronizable: 200kHz to 2.2MHz
  • Accurate 1V Enable Pin Threshold
  • Internal Compensation
  • Output Soft-Start and Tracking
  • Small Thermally Enhanced 16-Lead MSOP and 24-Lead 3mm × 5mm QFN Packages
LT8620
65V, 2A Synchronous Step-Down Regulator with 2.5μA Quiescent Current
5V 2A Step-Down Converter Efficiency at 5VOUT Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 2

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Hardware Ecosystem

Parts Product Life Cycle Description
High Voltage Hot Swap Controllers 1
LTC4364
RECOMMENDED FOR NEW DESIGNS Surge Stopper with Ideal Diode
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Tools & Simulations

LTspice 2

Models for the following parts are available in LTspice:

  • LT8620

LTpowerCAD 1

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
DC1992A

LT8620 Demo Board | Micropower Synchronous Buck, 5.5V ≤ VIN ≤ 65V, VOUT = 5V @ 2A

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Product Details

Demonstration circuit 1992A is a 65V, 2A micropower synchronous monolithic step-down regulator featuring the LT8620. The LT8620 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 2.5μA of quiescent current when the output is regulated at 5V. The demo board features a 5.5V to 65V inut voltage range and generates 5V at 2A.


Top and bottom power switches, compensation components and other necessary circuits are inside of the LT8620 to minimize external components and simplify design.
DC1992A
LT8620 Demo Board | Micropower Synchronous Buck, 5.5V ≤ VIN ≤ 65V, VOUT = 5V @ 2A
DC1992A Demo Board DC1992A Demo Board DC1992A - Schematic

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