LTC1622
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LTC1622

Low Input Voltage Current Mode Step-Down DC/DC Controller

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $2.70
Features
  • High Efficiency
  • Constant Frequency 550kHz Operation
  • VIN Range: 2V to 10V
  • Multiampere Output Currents
  • OPTI-LOOP Compensation Minimizes COUT
  • Selectable, Burst Mode Operation
  • Low Dropout Operation: 100% Duty Cycle
  • Synchronizable up to 750kHz
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Low Quiescent Current: 350µA
  • Shutdown Mode Draws Only 15µA Supply Current
  • ±1.9% Reference Accuracy
  • Available in 8-Lead MSOP
Additional Details
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The LTC1622 is a constant frequency current mode step-down DC/DC controller providing excellent AC and DC load and line regulation. The device incorporates an accurate undervoltage feature that shuts the LTC1622 down when the input voltage falls below 2V.

The LTC1622 boasts a ±1.9% output voltage accuracy and consumes only 350µA of quiescent current. For applications where efficiency is a prime consideration and the load current varies from light to heavy, the LTC1622 can be configured for Burst Mode operation. Burst Mode operation enhances low current efficiency and extends battery run time. Burst Mode operation is inhibited during synchronization or when the SYNC/MODE pin is pulled low to reduce noise and possible RF interference.

High constant operating frequency of 550kHz allows the use of a small inductor. The device can also be synchronized up to 750kHz for special applications. The high frequency operation and the available 8-lead MSOP package create a high performance solution in an extremely small amount of PCB area.

To further maximize the life of the battery source, the P-channel MOSFET is turned on continuously in dropout (100% duty cycle). In shutdown, the device draws a mere 15µA.

Applications

  • 1- or 2-Cell Li-Ion Powered Applications
  • Cellular Telephones
  • Wireless Modems
  • Portable Computers
  • Distributed 3.3V, 2.5V or 1.8V Power Systems
  • Scanners
  • Battery-Powered Equipment
Part Models 6
1ku List Price Starting From $2.70

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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LTC1622CS8#PBF
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LTC1622IS8#PBF
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Product Lifecycle

PCN

Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC1622CMS8#PBF

PRODUCTION

LTC1622CMS8#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

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

Jun 16, 2021

- 21_0026

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

LTC1622CS8#PBF

PRODUCTION

LTC1622CS8#TRPBF

PRODUCTION

LTC1622IS8#PBF

PRODUCTION

LTC1622IS8#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0255

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

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 3, 2020

- 20_0128

arrow down

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC1622CMS8#PBF

PRODUCTION

LTC1622CMS8#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

arrow down

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

Jun 16, 2021

- 21_0026

arrow down

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

LTC1622CS8#PBF

PRODUCTION

LTC1622CS8#TRPBF

PRODUCTION

LTC1622IS8#PBF

PRODUCTION

LTC1622IS8#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0255

arrow down

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

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC232A

LTC1622MS8 | Low Input Voltage Current Mode Step-Down DC/DC Converter, 2 to 8 VIN, 1.8, 2.5, or 3.3 VOUT @ 800mA

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DC232A

LTC1622MS8 | Low Input Voltage Current Mode Step-Down DC/DC Converter, 2 to 8 VIN, 1.8, 2.5, or 3.3 VOUT @ 800mA

LTC1622MS8 | Low Input Voltage Current Mode Step-Down DC/DC Converter, 2 to 8 VIN, 1.8, 2.5, or 3.3 VOUT @ 800mA

Product Detail

DC232A: Demo Board for the LTC1622 Low Input Voltage Current Mode Step-Down DC/DC Controller.

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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