The A8230A is a high performance ultra lowdropout constant current bias supply for white LEDs. It can be used as an alternative to the simple ballast resistors in conventional parallel white LEDs applications. For dimming control, an enable input pin is controlled by processor GPIO output pulses for 32 level linear current. Using a low frequency PWM waveform.
Ultra Low 200mV Dropout at 20mA
0.6% High Accuracy Current Matching
20mA Full Scale Current
32 Level Linear Current Brightness Control
PWM Brightness Control
2.5V to 6V Supply Voltage Range
Thermal shutdown function
Under-voltage protection function
Available in SOT-26 Package
APPLICATION
Mobile Phones
White LED backlighting
Camera Flash LED Lighting
TYPICAL APPLICATION
ORDERING INFORMATION
Package Type
Part Number
SOT-26
A8230AE6R E6
A8230AE6VR
Note
R: Tape & Reel V: Green Package
AiT provides all Pb free products
Suffix “ v “ means Green Package
Figure 1
RE.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | A8230SLM |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY | |
2 | A8231SLH |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY | |
3 | A8231SLM |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY | |
4 | A8232SLM |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY | |
5 | A8233SLH |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY | |
6 | A8233SLM |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY | |
7 | A82389 |
Intel |
Message Passing Coprocessor A Multibus II Bus Interface Controller | |
8 | A82 |
Tyco Electronics |
20 TO 250 MHz CASCADABLE AMPLIFIER | |
9 | A8205SLH |
Allegro MicroSystems |
LOW-DROPOUT REGULATORS . HIGH EFFICIENCY | |
10 | A821 |
Secos |
PNP Plastic Encapsulated Transistor | |
11 | A821 |
JIANGSU CHANGJIANG |
PNP Transistor | |
12 | A821S |
Rohm |
2SA821S |