The ISL6236A dual step-down, switch-mode power-supply
(SMPS) controller generates logic-supply voltages in
battery-powered systems. The ISL6236A includes two
pulse-width modulation (PWM) controllers, 5V/3.3V and
1.5V/1.05V. The output of SMPS1 can also be adjusted from
0.7V to 5.5V. The SMPS2 output can be adjusted from 0V to
2.5V by setting REFIN2 voltage. An optional external charge
pump can be monitored through SECFB. This device features
a linear regulator providing 3.3V/5V, or adjustable from 0.7V to
4.5V output via LDOREFIN. The linear regulator provides up
to 100mA output current with automatic linear-regulator
bootstrapping to the BYP input. When in switchover, the LDO
output can source up to 200mA. The ISL6236A includes
on-board power-up sequencing, the power-good (POK)
outputs, digital soft-start, and internal soft-stop output
discharge that prevents negative voltages on shutdown.