STMicroelectronics PM6680
PM6680 is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with lossless current sensing technique. The constant on-time architecture assures fast load transient response and the embedded voltage feed-forward provides nearly constant switching frequency operation. The PM6680 provides a selectable switching frequency, allowing three different values of switching frequencies for the two switching sections.| Part No. | PM6680 |
|---|---|
| Datasheet | PM6680 Download |
| Manufacturer |  STMicroelectronics |
| Description | No Rsense dual step-down controller |
| Buy | Stock & Price |
FEATURES
● 6 V to 28 V input voltage range● Adjustable output voltages
● 5 V always voltage available deliver 100 mA peak current
● 1.237 V ± 1% reference voltage available
● Lossless current sensing using low side MOSFETs RDS(on)
● Negative current limit
● Soft-start internally fixed at 2ms
● Soft output discharge
● Latched OVP and UVP
● Selectable pulse skipping at light loads
● Selectable minimum frequency (33 kHz) in pulse skip mode
● 4 mW maximum quiescent power
● Independent power good signals
● Output voltage ripple compensation
APPLICATIONS
● Notebook computers● Tablet PC or slates
● Mobile system power supply
● 3-4 cells Li+ battery powered devices VFQFPN-32 5X5
DESCRIPTION
An embedded integrator control loop compensates the DC voltage error due to the output ripple. Pulse skipping technique increases efficiency at very light load. Moreover a minimum switching frequency of 33kHz is selectable to avoid audio noise issues. The output voltages OUT1 and OUT2 can be adjusted from 0.9 V to 5.5 V and from 0.9 V to 3.3 V respectively.
