STMicroelectronics PM6686
Dual step-down controller
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