The IS31BL3228A (IS31BL3228B) is a low noise, constant frequency charge pump DC/DC converter for white LED applications. The IS31BL3228A (IS31BL3228B) is capable of driving up to four (six) channels of LEDs at preset 20mA per channel from a 2.8V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher current LEDs. Onl.
• VCC range: 2.8V to 5.5V
• Fully programmable current with single wire
• 14 current levels
• Drives up to four (IS31BL3228A)/six
(IS31BL3228B) channels of LEDs
• No inductors, low noise operation
• Built-in thermal protection
• Automatic soft start
• Low shutdown current: ISD< 3μA
• UTQFN-12 (2mm×2mm) package
• RoHS & Halogen-Free Compliance
• TSCA Compliance
APPLICATIONS
• Cell phone, smart phone, PDA
• MP3, MP4, PMP
• White LED backlighting
Figure 1 Typical Application Circuit (IS31BL3228A) Note: COUT can’t be less than 2.2μF, and when less than six channels are used, keep the unused pin t.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | IS31BL3228B |
Lumissil |
WHITE LED DRIVER | |
2 | IS31BL3229 |
ISSI |
8-LED BACKLIGHT DRIVER | |
3 | IS31BL3212 |
ISSI |
FOUR CHANNEL CONSTANT CURRENT LED DRIVER | |
4 | IS31BL3230 |
ISSI |
8 CHANNELS CONSTANT CURRENT LED DRIVER | |
5 | IS31BL3231 |
ISSI |
FLASH LED DRIVER | |
6 | IS31BL3232 |
ISSI |
FLASH LED DRIVER | |
7 | IS31BL3233A |
ISSI |
1.5A FLASH/TORCH LED DRIVER | |
8 | IS31BL3506A |
ISSI |
1.0MHZ BOOST CONVERTER | |
9 | IS31BL3506B |
Lumissil |
1.0MHZ BOOST CONVERTER | |
10 | IS31BL3506B |
ISSI |
1.0MHZ BOOST CONVERTER | |
11 | IS31BL3508A |
Lumissil |
1.0MHZ BOOST CONVERTER | |
12 | IS31BL3508A |
ISSI |
1.0MHZ BOOST CONVERTER |