Power Management Switching Regulator LCD/CCD/OLED Bias
Power Management Switching Regulator SEPIC Regulators
 Power Management Switching Regulator Step-Up (Boost) Regulators Internal Power Switch Boost

LT1613 - 1.4MHz, Single Cell DC/DC Converter in 5-Lead SOT-23

Features

  • Uses Tiny Capacitors and Inductor
  • Internally Compensated
  • Fixed Frequency 1.4MHz Operation
  • Operates with VIN as Low as 1.1V
  • 3V at 30mA from a Single Cell
  • 5V at 200mA from 3.3V Input
  • 15V at 60mA from Four Alkaline Cells
  • High Output Voltage: Up to 34V
  • Low Shutdown Current: <1µA
  • Low VCESAT Switch: 300mV at 300mA
  • 5-Lead SOT-23 Package

Typical Application

LT1613 Typical Application
LT1613 Typical Application

Description

The LT1613 is the industry’s first 5-lead SOT-23 current mode DC/DC converter. Intended for small, low power applications, it operates from an input voltage as low as 1.1V and switches at 1.4MHz, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. Its small size and high switching frequency enables the complete DC/DC converter function to take up less than 0.2 square inches of PC board area. Multiple output power supplies can now use a separate regulator for each output voltage, replacing cumbersome quasi-regulated approaches using a single regulator and a custom transformer. A constant frequency, internally compensated current mode PWM architecture results in low, predictable output noise that is easy to filter. The high voltage switch on the LT1613 is rated at 36V, making the device ideal for boost converters up to 34V as well as for Single-Ended Primary Inductance Converter (SEPIC) and flyback designs. The device can generate 5V at up to 200mA from a 3.3V supply or 5V at 175mA from four alkaline cells in a SEPIC design. The LT1613 is available in the 5-lead SOT-23 package.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

SOT-23

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LT1613CS5 SOT 5 C $2.01 View
LT1613CS5#PBF SOT 5 C $2.01 View
LT1613CS5#TR SOT 5 C $2.01 $1.70 View
LT1613CS5#TRM SOT 5 C $2.01 $1.72 View
LT1613CS5#TRMPBF SOT 5 C $2.01 $1.72 View
LT1613CS5#TRPBF SOT 5 C $2.01 $1.70 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC233A LT1613CS5 LT1611CS5 | 1.4MHz, SOT-23 DC-DC Converter, 3 Circuits: LT1613 Boost and SEPIC, LT1611 Inverter $75.00
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Click here to view our complete list of demo boards

Applications

  • Digital Cameras
  • Pagers
  • Cordless Phones
  • Battery Backup
  • LCD Bias
  • Medical Diagnostic Equipment
  • Local 5V or 12V Supply
  • External Modems
  • PC Cards

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Related models available in LTspice IV
LT1613

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