LTC3450
LTC3450 is Triple-Output Power-Supply manufactured by Linear Technology.
Triple Output Power Supply for Small TFT-LCD Displays
Features
- Generates Three Voltages: 5.1V at 10m A
- 5V,
- 10V, or
- 15V at 500µA 10V or 15V at 500µA
- Better than 90% Efficiency
- Low Output Ripple: Less than 5m VP-P
- plete 1mm ponent 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
U APPLICATIO S
- Cellular Handsets with Color Display
- Handheld Instruments
- PDA
DESCRIPTIO
The LTC®3450 is a plete 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.
The synchronous boost converter generates a low noise, high efficiency 5.1V, 10m A supply. Internal charge pumps are used to generate 10V, 15V, and
- 5V,
- 10V or
- 15V. Output sequencing is controlled internally to insure proper initialization of the LCD panel.
A master shutdown input reduces quiescent current to <2µA and quickly discharges each output for rapid turn off of the LCD panel. The LTC3450 is offered in a low profile (0.75mm), 3mm × 3mm 16-pin QFN package, minimizing the solution profile and footprint.
, LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL...
