LT1506
Info: : PRODUCTION
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LT1506

4.5A, 500kHz Step-Down Switching Regulator

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 24
1ku List Price Starting From $6.31
Features
  • Constant 500kHz Switching Frequency
  • Easily Synchronizable
  • Operates with Input as Low as 4V
  • Uses All Surface Mount Components
  • Inductor Size Reduced to 1.8µH
  • Saturating Switch Design: 0.07Ω
  • Shutdown Current: 20µA
  • Cycle-by-Cycle Current Limiting
Additional Details
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The LT1506 is a 500kHz monolithic buck mode switching regulator functionally identical to the LT1374 but optimized for lower input voltage applications. It will operate over a 4V to 15V input range compared with 5.5V to 25V for the LT1374. A 4.5A switch is included on the die along with all the necessary oscillator, control and logic circuitry. High switching frequency allows a considerable reduction in the size of external components. The topology is current mode for fast transient response and good loop stability. Both fixed output voltage and adjustable parts are available.

A special high speed bipolar process and new design techniques achieve high efficiency at high switching frequency. Efficiency is maintained over a wide output current range by keeping quiescent supply current to 4mA and by utilizing a supply boost capacitor to saturate the power switch.

The LT1506 fits into standard 7-pin DD and fused lead SO-8 packages. Full cycle-by-cycle short-circuit protection and thermal shutdown are provided. Standard surface mount external parts are used, including the inductor and capacitors. There is the optional function of shutdown or synchronization. A shutdown signal reduces supply current to 20µA. Synchronization allows an external logic level signal to increase the internal oscillator from 580kHz to 1MHz.

Applications

  • Portable Computers
  • Battery-Powered Systems
  • Battery Charger
  • Distributed Power
Part Models 24
1ku List Price Starting From $6.31

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LT1506CR#PBF
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LT1506CR#TRPBF
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LT1506CR-3.3#PBF
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LT1506CR-3.3#TRPBF
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LT1506CR-3.3SYNC#PBF
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LT1506CR-3.3Sync#TRPBF
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LT1506CR-SYNC#PBF
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LT1506CR-Sync#TRPBF
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LT1506CS8#PBF
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LT1506CS8#TRPBF
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LT1506CS8-3.3#PBF
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LT1506CS8-3.3#TRPBF
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LT1506IR#PBF
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LT1506IR#TRPBF
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LT1506IR-3.3#PBF
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LT1506IR-3.3#TRPBF
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LT1506IR-3.3SYNC#PBF
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LT1506IR-3.3Sync#TRPBF
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LT1506IR-SYNC#PBF
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LT1506IR-Sync#TRPBF
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LT1506IS8#PBF
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LT1506IS8#TRPBF
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LT1506IS8-3.3#PBF
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LT1506IS8-3.3#TRPBF
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Product Lifecycle

PCN

Aug 10, 2022

- 22_0175

Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark

LT1506CR#PBF

PRODUCTION

LT1506CR#TRPBF

PRODUCTION

LT1506CR-3.3#PBF

PRODUCTION

LT1506CR-3.3#TRPBF

PRODUCTION

LT1506CR-3.3SYNC#PBF

PRODUCTION

LT1506CR-3.3Sync#TRPBF

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LT1506CR-SYNC#PBF

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LT1506CR-Sync#TRPBF

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LT1506IR#PBF

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LT1506IR#TRPBF

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LT1506IR-3.3#PBF

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LT1506IR-3.3#TRPBF

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LT1506IR-3.3SYNC#PBF

PRODUCTION

LT1506IR-3.3Sync#TRPBF

PRODUCTION

LT1506IR-SYNC#PBF

PRODUCTION

LT1506IR-Sync#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0254

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1506CS8#PBF

PRODUCTION

LT1506CS8#TRPBF

PRODUCTION

LT1506CS8-3.3#PBF

PRODUCTION

LT1506CS8-3.3#TRPBF

PRODUCTION

LT1506IS8#PBF

PRODUCTION

LT1506IS8#TRPBF

PRODUCTION

LT1506IS8-3.3#PBF

PRODUCTION

LT1506IS8-3.3#TRPBF

PRODUCTION

Jun 11, 2021

- 21_0060

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1506CS8#PBF

PRODUCTION

LT1506CS8#TRPBF

PRODUCTION

LT1506CS8-3.3#PBF

PRODUCTION

LT1506CS8-3.3#TRPBF

PRODUCTION

LT1506IS8#PBF

PRODUCTION

LT1506IS8#TRPBF

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LT1506IS8-3.3#PBF

PRODUCTION

LT1506IS8-3.3#TRPBF

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Product Lifecycle

PCN

Aug 10, 2022

- 22_0175

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Laser Top Mark Conversion for DDPAK & TO220 Packages Assembled in ADPG. Country of Origin Code [MY] To Be Incorporated On Top Mark

LT1506CR#PBF

PRODUCTION

LT1506CR#TRPBF

PRODUCTION

LT1506CR-3.3#PBF

PRODUCTION

LT1506CR-3.3#TRPBF

PRODUCTION

LT1506CR-3.3SYNC#PBF

PRODUCTION

LT1506CR-3.3Sync#TRPBF

PRODUCTION

LT1506CR-SYNC#PBF

PRODUCTION

LT1506CR-Sync#TRPBF

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LT1506IR#PBF

PRODUCTION

LT1506IR#TRPBF

PRODUCTION

LT1506IR-3.3#PBF

PRODUCTION

LT1506IR-3.3#TRPBF

PRODUCTION

LT1506IR-3.3SYNC#PBF

PRODUCTION

LT1506IR-3.3Sync#TRPBF

PRODUCTION

LT1506IR-SYNC#PBF

PRODUCTION

LT1506IR-Sync#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0254

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 1 of 2)

LT1506CS8#PBF

PRODUCTION

LT1506CS8#TRPBF

PRODUCTION

LT1506CS8-3.3#PBF

PRODUCTION

LT1506CS8-3.3#TRPBF

PRODUCTION

LT1506IS8#PBF

PRODUCTION

LT1506IS8#TRPBF

PRODUCTION

LT1506IS8-3.3#PBF

PRODUCTION

LT1506IS8-3.3#TRPBF

PRODUCTION

Jun 11, 2021

- 21_0060

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LT1506CS8#PBF

PRODUCTION

LT1506CS8#TRPBF

PRODUCTION

LT1506CS8-3.3#PBF

PRODUCTION

LT1506CS8-3.3#TRPBF

PRODUCTION

LT1506IS8#PBF

PRODUCTION

LT1506IS8#TRPBF

PRODUCTION

LT1506IS8-3.3#PBF

PRODUCTION

LT1506IS8-3.3#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

reference details image

DC237A

LT1506CS8 | 4.5A Switch, 500KHz Step Down Switching Regulator, 4V to 15VIN, 3.3VOUT @ 4A

reference details image

DC238A

LT1506CR | 4.5A Switch, 500KHz Step Down Switching Regulator, 4V to 15VIN, 3.3VOUT @ 4A

Tools & Simulations

Tools & Simulations 1

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.

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