The LC3300 variable frequency step-up Converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. It features allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LEDs brightness. The fast 3.
allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LEDs brightness. The fast 3MHz operation frequency allows for smaller capacitor and inductor. Fault condition protection uses cycle-by cycle current limiting to sense maximum inductor current and over-voltage protection. The 0.2V low reference voltage minimized the power loss across the current sense resistor. The converter can operate from 2V to 6V, and capable of delivering maximum 200mA output current at 4-LEDs application with 3V inp.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | LC3301CW |
Leiditech |
LOW CAPACITANCE TVS DIODE | |
2 | LC3304EP8 |
Leiditech |
LOW CAPACITANCE TVS DIODE ARRAY | |
3 | LC3304EP8 |
UN Semiconducctor |
Transient Voltage Suppressors | |
4 | LC3304P8 |
Leiditech |
4-Line 3.3V ESD Protection Diode Array | |
5 | LC33 |
Microsemi |
1500 Watt Low Capacitance Transient Voltage Suppressor | |
6 | LC3311CCW |
Leiditech |
LOW CAPACITANCE TVS DIODE | |
7 | LC331632M-10 |
Sanyo |
512K (32768 words X 16 bits) Pseudo-SRAM | |
8 | LC331632M-12 |
Sanyo |
512K (32768 words X 16 bits) Pseudo-SRAM | |
9 | LC331632M-70 |
Sanyo |
512K (32768 words X 16 bits) Pseudo-SRAM | |
10 | LC331632M-80 |
Sanyo |
512K (32768 words X 16 bits) Pseudo-SRAM | |
11 | LC3374N |
Leiditech |
4-Line TVS | |
12 | LC338128M |
Sanyo |
1MEG (131072 WORDS X 8BITS) PSEUDO-SRAM |