LTC1697
PRODUCTIONHigh Efficiency Low Power 1W CCFL Switching Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $2.83
Part Details
- 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
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.
Applications
- PDAs
- Handheld Computers
- Portable Instruments
- Handheld GPS with Map Display
- Handheld TV/Video Monitor
Documentation
Data Sheet 1
Reliability Data 1
User Guide 1
Design Note 2
Technical Articles 1
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1697EMS#PBF | 10-Lead MSOP | ||
| LTC1697EMS#TRPBF | 10-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3) |
||
| LTC1697EMS#PBF | PRODUCTION | |
| LTC1697EMS#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0130 Laser Top Mark Conversion for 10-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC1697EMS#PBF | PRODUCTION | |
| LTC1697EMS#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTC1697
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.
Evaluation Kits
LTC1697EMS | 1 Watt CCFL Controller, VIN = 2.7V - 5.5V, VDIM = 1V(0%) - 2V(100%)
Resources
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