LT8616

PRODUCTION

Dual 42V Synchronous Monolithic Step-Down Regulator with 6.5μA Quiescent Current

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Part Models
10
1ku List Price
Starting From $4.95
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Part Details

  • Wide Input Voltage Range: 3.4V to 42V
  • 2.5A and 1.5A Buck Regulators with Separate Inputs
  • Fast Minimum Switch On-Time: 35ns
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 6.5μA IQ Regulating 12VIN to 5VOUT and 3.3VOUT
    • Output Ripple < 15mV
  • 180° Out of Phase Switching
    • Adjustable: 200kHz to 3MHz
  • Synchronizable: 250kHz to 3MHz
  • Accurate 1V Enable Pin Thresholds
  • Internal Compensation
  • Output Soft-Start and Tracking
  • TSSOP Package: Output Stays at or Below Regulation Voltage During Adjacent Pin Short or When a Pin Is Left Floating
  • Thermally Enhanced 28-Lead TSSOP and 3mm × 6mm QFN Packages
LT8616
Dual 42V Synchronous Monolithic Step-Down Regulator with 6.5μA Quiescent Current
5V, 3.3V, 700kHz Step-Down Converter Efficiency Product Package 1 Product Package 2
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
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:

  • LT8616

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
schematic 4
schematic 5
schematic 6
DC2169A

LT8616EFE Demo Board | Dual Sync Buck, 4.1V ≤ VIN ≤ 42V, VOUT1 = 5V @ 1.5A, VOUT2 = 3.3V @ 2.5A

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Product Details

Demonstration circuit 2169A is a dual monolithic step-down DC/DC switching regulator featuring the LT8616. The LT8616 is a high efficiency, high speed, dual synchronous monolithic step-down switching regulator that consumes only 6.5μA of quiescent current with both channels enabled. The demo circuit is designed for 5V, 1.5A and 3.3V, 2.5A outputs. Both channels contain all switches and necessary circuitry to minimize the external components and solution size. Fast minimum ON time of 35ns enables high VIN to low VOUT conversion at high switching frequency. Independent input voltage, feedback, soft-start and power good pins for each channel simplify complex power supply tracking/sequencing requirements.


 
DC2169A
LT8616EFE Demo Board | Dual Sync Buck, 4.1V ≤ VIN ≤ 42V, VOUT1 = 5V @ 1.5A, VOUT2 = 3.3V @ 2.5A
DC2169A Demo Board DC2169A Demo Board DC2169A Demo Board DC2169A Demo Board DC2169A Demo Board DC2169A - Schematic

Latest Discussions

1 Years Ago
RE: LT8616 PG Signal - LTspice vs Real World
3 Years Ago
RE: LT8616 Voltage in VOUT1 is unable to regulate to 5V and outputs 11V; power good 0V for VOUT1
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