PM6686

PM6686 Dual step-down controller with adjustable voltages, adjustable LDO and auxiliary charge pump controller for notebook Features ■ 5.5 V to 28 V input voltage range ■ Dual fixed OUT1 = 1.5 V/5 V and OUT2 = 1.05 V / 3.3 V outputs or adjustable OUT1 = 0.7 V to 5.5 V and OUT2 = 0.7 V to 2.5 V outputs, ± 1.5% accuracy over valley regulation ■ Low-side MOSFETs' RDS(on) current sensing and programmable current limit ■ Constant ON-time control ■ Frequency selectable ■ Soft-start internally fixed at 2 ms and soft-stop ■ Selectable pulse skipping at light loads ■ Selectable minimum frequency (33 kHz) in pulse skip mode ■ Independent Power Good and EN signals ■ Latched OVP and UVP ■ Charge pump feedback ■ Fixed 3.3 V/5.0 V, or adjustable output 0.7 V to 4.5 V, ± 1.5% (LDO): 200 mA ■ 3.3 V reference voltage ± 2.0%: 5 mA ■ 2.0 V reference voltage ± 1.0%: 50 µA Applications ■ Notebook computers ■ Main (3.3 V/5 V), chipset (1.5 V/1.05 V), DDR1/2/3, graphic ...