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The PT4303 is a 4-channel 1x/1.5x auto-adjust charge pump white LED driver with two dimming modes. Auto-adjust charge pump achieves high efficiency for Li-Ion battery supply. The two 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.
z 3V-5.5V input voltage z 1x/1.5x auto-adjust charge pump z Set LED current by external resistor z Dimming LED by PWM signal through 2 control terminal z LED fault detection z <3% current mismatch z No inductor z Less than 1uA shutdown current z Built-in soft-start and soft mode decision APPLICATIONS z Cell phones z Laptop computers and PDAs z Digital cameras z Small LCD displays ORDERING INFORMATION PACKAGE TEMPERATURE RANGE ORDERING PART NUMBER QFN-16（3x3） -40 oC to 85 oC PT4303EQFN Note: xxxxxX Assembly Factory Code Lot Number TYPICAL APPLICATION CIRCUIT C1 1uF C2 1uF TRANSPORT.
PT4303 - ETC
The PT4303 is a 4-channel 1x/1.5x auto-adjust charge pump white LED driver with three dimming modes. Auto-adjust charge .
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | PT430 |
Sharp Electrionic |
Narrow Acceptance Phototransistor |
|
| 2 | PT4301 |
PTC |
Low Power High Sensitivity 315/434 MHz OOK/ASK Superheterodyne Receiver |
|
| 3 | PT4301 |
ETC |
1x/1.5x Auto-Adjust Charge Pump 4-Channel White LED Driver |
|
| 4 | PT4301 |
Powtech |
4 Channel 1x/1.5x Auto-Adjust Charge Pump White LED Driver |
|
| 5 | PT4302 |
PTC |
Ultra-Low Power OOK/ASK Receiver |
|
| 6 | PT4302 |
Powtech |
2 Channel 1x/1.5x Auto-Adjust Charge Pump White LED Driver |
|
| 7 | PT4305 |
PTC |
315 MHz / 433.92 MHz PLL Tuned Low Power FSK Receiver |
|
| 8 | PT4305 |
PowTech |
1x/1.5x Auto-Adjust Charge Pump One Channel |
|
| 9 | PT430F |
Sharp Electrionic |
Narrow Acceptance Phototransistor |
|
| 10 | PT431 |
Sharp Electrionic |
HIGH SENSITIVITY PHOTOTRANSISTOR |
|
| 11 | PT4316 |
PTC |
Low Power 315/433 MHz OOK/ASK Superheterodyne Receiver |
|
| 12 | PT4317 |
PTC |
Low Power 315/433 MHz OOK/ASK Superheterodyne Receiver |
|