DatasheetsPDF.com

PT4303

Part Number	PT4303
Manufacturer	ETC
Description	1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver
Published	Jan 19, 2015
Detailed Description	LED Driver PT4303 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver with Two Dimming Modes GENERAL DESCRIPTION ...
Datasheet	PT4303 PDF File

Overview

LED Driver PT4303 1x/1.
5x Auto-Adjust Charge Pump 4-Channel White LED Driver with Two Dimming Modes GENERAL DESCRIPTION The PT4303 is a 4-channel 1x/1.
5x auto-adjust charge pump white LED driver with three dimming modes.
Auto-adjust charge pump achieves high efficiency for Li-Ion battery supply.
The three LED dimming modes enable users to dim the four LEDs all together or individually.
Only a few external components (two flying capacitors and two filter capacitors at VIN and VOUT) are needed, which makes the PT4303 ideally suited for mobile applications.
The current through the LED can be set by an external resistor.
The four LEDs can be turned on and off individually or in a group of two to four through the two control terminals, which can also be used to dim the LEDs by applying PWM control signals.
Built-in soft-start circuit prevents the inrush current from the power supply during power on and 1x/1.
5x mode change.
The thermal shutdown and current limiter prevent the PT4303 from being damaged by a high-level current through it.
A shutdown current of less than 1uA makes the battery last longer.
The PT4303 is available in QFN-16 package.
FEATURES ♦ 3V-5.
5V input voltage ♦ 1x/1.
5x auto-adjust charge pump ♦ Set LED current by external resistor ♦ Dimming LED by PWM signal through 2 control terminal ♦ LED fault detection ♦ <3% current mismatch ♦ No inductor ♦ Less than 1uA shutdown current ♦ Built-in soft-start and soft mode decision APPLICATIONS ♦ Cell phones ♦ Laptop computers and PDAs ♦ Digital cameras ♦ Small LCD displays ♦ Programmable current sink TYPICAL APPLICATIONS LED Driver C1 1uF C2 1uF 3V to 5.
5V CIN 1uF Control bit 0-1 C1N C1P C2N C2P VIN VOUT EN CTRL0 CTRL1 GND LED1 LED2 LED3 LED4 ISET COUT 1uF RSET(24K) Figure 1.
Li-Ion Battery Driving 4 White LEDs ...

Similar Datasheet

PT430 Narrow Acceptance Phototransistor - Sharp Electrionic
PT4301 Low Power High Sensitivity 315/434 MHz OOK/ASK Superheterodyne Receiver - PTC
PT4301 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver - ETC
PT4301 4 Channel 1x/1.5x Auto-Adjust Charge Pump White LED Driver - Powtech
PT4302 Ultra-Low Power OOK/ASK Receiver - PTC
PT4302 2 Channel 1x/1.5x Auto-Adjust Charge Pump White LED Driver - Powtech
PT4303 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver - Powtech
PT4303 1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver - ETC
PT4305 315 MHz / 433.92 MHz PLL Tuned Low Power FSK Receiver - PTC
PT430F Narrow Acceptance Phototransistor - Sharp Electrionic

@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)