Tiny Linear LED Driver for Portable Electronics from Texas Instruments
Texas Instruments has introduced what it says is the smalles the smallest two-bank, low dropout (LDO) regulator to support light emitting diode (LED) lighting in portable applications, such as mobile phones, navigation systems, MP3 and media players. The device enables quality color backlighting from a tiny 1.2 mm x 1.2 mm package, allowing end-users to experience blinking and dimming of color keypads and navigation pad lights.
Texas Instruments has introduced what it says is the smalles the smallest two-bank, low dropout (LDO) regulator to support light emitting diode (LED) lighting in portable applications,
such as mobile phones, navigation systems, MP3 and media players. The device enables quality color backlighting from a tiny 1.2 mm x 1.2 mm package, allowing end-users to experience blinking and dimming of color keypads and navigation pad lights.
TI's TPS75105 linear, quad-LDO with matching LED constant current source drives up to four LEDs in two banks with each LED at 25 mA (max). Each bank features independent pulse width modulation (PWM) brightness control that controls the dimming level from full brightness to off.
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