The PT4101 is a step-up DC/DC converter designed for driving up to 5 white LEDs in series from a single cell Lithium Ion battery with constant current. Because it directly regulates output current, the PT4101 is ideal for driving light emitting diodes (LEDs) whose light intensity is proportional to the current passing through them, not the voltage across the.
z z z z z z z Drives Up to 5 Series White LEDs from 3V Up to 87% Efficiency 1.25MHz Fixed Switching Frequency Low 104mV Feedback Voltage Open Load Shutdown PWM Dimming SOT23-6 Packages
APPLICATIONS
z z z z Cell Phones Handheld Computers and PDAs Digital Cameras Small LCD Displays
ORDERING INFORMATION
PACKAGE SOT23-6 TEMPERATURE RANGE -40 oC to 85 oC ORDERING PART NUMBER PT4101B23F TRANSPORT MEDIA Tape and Reel 3000 units MARKING 4101
TYPICAL APPLICATIONS
0.89
Vin=3.6V
0.88 0.87 0.86
Efficiency
0.85 0.84 0.83 0.82 0.81 0.80 2mA
2
*LED 3
*LED 4
*LED 5
*LED
5mA
10mA
15mA
20mA
Iout (mA)
F.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | PT4102 |
Micro Bridge Technology |
Step-up White LED Driver | |
2 | PT4103 |
Powtech |
White LED Step-Up Converter | |
3 | PT4105 |
Powtech |
Step-Down Power LED Driver | |
4 | PT4107 |
Powtech |
Universal High Brightness LED Driver | |
5 | PT4110 |
Sharp Electrionic Components |
Side View and Thin Flat Type Phototransistors | |
6 | PT4110 |
Powtech |
High Efficiency White LED Driver | |
7 | PT4110F |
Sharp Electrionic Components |
Side View and Thin Flat Type Phototransistors | |
8 | PT4112 |
PowTech |
WLED Driver | |
9 | PT4113 |
PowTech |
480mA LED backlight | |
10 | PT4115 |
PowTech |
1.2A Step-down High Brightness LED Driver | |
11 | PT4115B |
LIZE |
Continuous inductor current conduction mode drop Constant current source | |
12 | PT4115C |
LIZE |
500mA high light ratio LED constant current driver |