1. Products
  2. Power Management
  3. Display Control and Power
  4. CCFL Controllers
  5. LTC1697


Features and Benefits

  • Operates from Single Li-Ion Battery
  • 2.8V to 5.5V Input Voltage Range
  • Very Low Shutdown Current: <2µA
  • Synchronous Buck Architecture for High Efficiency
  • PWM Dimming Frequency Adjustable with a Single Capacitor
  • Accurate Lamp Current Maximizes Lamp Lifetime
  • Fixed Frequency Operation at 300kHz
  • Internal or External PWM Dimming
  • Small 10-Pin MSOP Package

Product Details

The LTC1697 is designed to control a single 1W cold cathode fluorescent lamp (CCFL). An internal PWM dimming system maximizes efficiency and dimming range. Accurate lamp currents can be set with a single external resistor.

The LTC1697 includes a synchronous current mode PWM controller with internal 1A MOSFET switches. It contains a 300kHz oscillator, 0.8V reference, and internal current sense. It operates from a 2.8V to 5.5V input voltage. The LTC1697 also has a thermal limit and a shutdown that reduces supply current to <2µA.

The LTC1697 is available in the MSOP-10 package.


  • PDAs
  • Handheld Computers
  • Portable Instruments
  • Handheld GPS with Map Display
  • Handheld TV/Video Monitor

Product Categories

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations


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Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
LTC1697EMS#PBF Material Declaration Reliability Data 10-Lead MSOP
LTC1697EMS#TRPBF Material Declaration Reliability Data 10-Lead MSOP
Wafer Fabrication Data R415 Reliability Data

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Sample & Buy

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Buy Now Pricing

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List Pricing

(*)The 1Ku 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 Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

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