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LTC1697EMS#TR +BOM

Switching Voltage Regulators LTC1697 - High Efficiency Low Power 1W CCFL Switching Regulator

Manufacturer:

Analog Devices, Inc
Mfr.Part #:

LTC1697EMS#TR
Datasheet:

LTC1697EMS#TR Datasheet (PDF)
Mounting Style:

SMD/SMT
Topology:

Buck
Output Voltage:

Adjustable
Output Current:

1 A
EDA/CAD Models:

Request Free CAD Models for LTC1697EMS#TR

LTC1697EMS#TR General Description

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.

Key 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

Application

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

Specifications

Product Category:	Switching Voltage Regulators	Mounting Style:	SMD/SMT
Topology:	Buck	Output Voltage:	Adjustable
Output Current:	1 A	Number of Outputs:	1 Output
Input Voltage, Min:	2.8 V	Input Voltage, Max:	5.5 V
Switching Frequency:	300 kHz	Minimum Operating Temperature:	- 40 C
Maximum Operating Temperature:	+ 85 C	Series:	LTC1697
Operating Supply Current:	900 uA	Product Type:	Switching Voltage Regulators
Subcategory:	PMIC - Power Management ICs