
Linear Technology
DESCRIPTION
The LTC®3450 is a complete power converter solution for small thin film transistor (TFT) liquid crystal display (LCD) panels. The device operates from a single Lithium-Ion cell, 2- to 3-cell alkaline input or any voltage source between 1.5V and 4.6V.
FEATURES
■ Generates Three Voltages:
5.1V at 10mA
–5V, –10V, or –15V at 500µA
10V or 15V at 500µA
■ Better than 90% Efficiency
■ Low Output Ripple: Less than 5mVP-P
■ Complete 1mm Component Profile Solution
■ Controlled Power-Up Sequence: AVDD/VGL/VGH
■ All Outputs Disconnected and Actively Discharged in
Shutdown
■ Low Noise Fixed Frequency Operation
■ Frequency Reduction Input for High Efficiency in
Blank Mode
■ Ultralow Quiescent Current: 75µA (Typ) in Scan Mode
■ Available in a 3mm × 3mm 16-Pin QFN Package
APPLICATIONS
■ Cellular Handsets with Color Display
■ Handheld Instruments
■ PDA