概觀
The IS31BL3212 provides four regulated current
sources, delivers up to 23mA of load current to
accommodate four white LEDs. It requires no charge
pump, has no noise and significantly improved the
efficiency.
The serial digital input is used to enable, disable, and
set current for each LED with 16 settings down to
0.69mA. A low-current shutdown feature disconnects
the load from the input and reduces quiescent current
typically 1.0mA.
The IS31BL3212 is available in a Pb-free,
space-saving 2mm×2mm DFN-8 and SOT23-6
package.