LT8616
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LT8616

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

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 10
1ku List Price Starting From $4.95
Features
  • 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
Additional Details
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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. Both channels contain all switches and necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency down to very low output currents while minimizing output ripple. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The enable pins have accurate 1V thresholds and can be used to program undervoltage lockout. Capacitors on the TR/SS pins programs the output voltage ramp rate during startup while the PG pins signal when each output is within 10% of the programmed output voltage. The LT8616 is available in a TSSOP package for high reliability.

Applications

  • Automotive and Industrial Supplies
  • General Purpose Step-Down
Part Models 10
1ku List Price Starting From $4.95

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT8616EFE#PBF

PRODUCTION

LT8616EFE#TRPBF

PRODUCTION

LT8616HFE#PBF

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LT8616HFE#TRPBF

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LT8616IFE#PBF

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LT8616IFE#TRPBF

PRODUCTION

Apr 11, 2019

- 19_0067

Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8616EFE#PBF

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LT8616EFE#TRPBF

PRODUCTION

LT8616EUDE#PBF

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LT8616EUDE#TRPBF

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LT8616HFE#PBF

PRODUCTION

LT8616HFE#TRPBF

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LT8616IFE#PBF

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LT8616IFE#TRPBF

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LT8616IUDE#PBF

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LT8616IUDE#TRPBF

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Filter by Model

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Part Models

Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LT8616EFE#PBF

PRODUCTION

LT8616EFE#TRPBF

PRODUCTION

LT8616HFE#PBF

PRODUCTION

LT8616HFE#TRPBF

PRODUCTION

LT8616IFE#PBF

PRODUCTION

LT8616IFE#TRPBF

PRODUCTION

Apr 11, 2019

- 19_0067

arrow down

Notification of Wafer Fab Location Change for 0.35 BCD Process

LT8616EFE#PBF

PRODUCTION

LT8616EFE#TRPBF

PRODUCTION

LT8616EUDE#PBF

PRODUCTION

LT8616EUDE#TRPBF

PRODUCTION

LT8616HFE#PBF

PRODUCTION

LT8616HFE#TRPBF

PRODUCTION

LT8616IFE#PBF

PRODUCTION

LT8616IFE#TRPBF

PRODUCTION

LT8616IUDE#PBF

PRODUCTION

LT8616IUDE#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC2169A

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

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DC2169A

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

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

Product Detail

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.


 


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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