The RT9287 integrates a boost converter for OLED power
and a Dual LDO for camera image sensor power. To achieve
high efficiency, the boost converter optimizes its operating
frequency for small LC filters value and reduces the
operating current. Moreover, the internal soft-start function
reduces the inrush current.
For the Dual LDO part, it possesses functions of 2%
accuracy, dual channel, low dropout voltage
(240mV@300mA), low noise, low ground current and
low dropout regulator sourcing up to 300mA at each
channel. For battery-powered devices, it provides near
zero shutdown current. Moreover, it also integrates
functions such as current limiting, over temperature, output
short circuit, 27uA low ground current per LDO and
short circuit thermal folded back protection. When output
short circuit occurs, the RT9287 reduces its over
temperature protection trip point to provide maximum
safety to users. The RT9287 is available in WDFN-10L
3x3 package.