LTC1697: High Efficiency Low Power 1W CCFL Switching Regulator Data Sheet8/27/2007107K
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
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.
- Handheld Computers
- Portable Instruments
- Handheld GPS with Map Display
- Handheld TV/Video Monitor
Product Lifecycle 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)
DC510A: Demo Board for the LTC1697 High Efficiency Low Power 1W CCFL Switching Regulator.
Documentation & Resources
R415 Reliability Data3/23/201825 K
DC510A - Demo Manual9/24/2009332K
A Compact and Power Efficient CCFL Controller for Handheld Devices2/1/2004 LT Journal
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|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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