Linear Technology LTC1697
High Efficiency Low Power 1W CCFL Switching Regulator
| Part No. | LTC1697 |
|---|---|
| Datasheet | LTC1697 Download |
| Manufacturer |  Linear Technology |
| Description | High Efficiency Low Power 1W CCFL Switching Regulator |
| Buy | Stock & Price |
FEATURES
● 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 U APPLICATIO S
● PDAs
● Handheld Computers
● Portable Instruments
● Handheld GPS with Map Display
● Handheld TV/Video Monitor DESCRIPTIO The LTC®1697 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.
