PM6680：2 adjustable output power controller for notebook PC chipset power
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. 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 PM6680 provides a selectable switching frequency, allowing three different values of switching frequencies for the two switching sections. 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.
Key Features
- Selectable pulse skipping at light loads
- Latched OVP and UVP
- 4mW maximum quiescent power
- Selectable minimum frequency (33kHz) in pulse skip mode
- Output voltage ripple compensation
- Independent power good signals
- Soft-start internally fixed at 2ms
- Negative current limit
- 6V to 28V input voltage range
- 5V always voltage available deliver 100mA peak current
- Adjustable output voltages
- Lossless current sensing using low side MOSFETs RDS(on)
- Soft output discharge
- 1.237V ±1% reference voltage available
产品规格
应用手册
手册
样片和购买
| 型号 | Package | Packing Type | Unit Price (US$)
* | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| PM6680 | VFQFPN 32 5x5x1.0 | Tray | 1.199 | 1000 | NEC | EAR99 | MALAYSIA |
| PM6680TR | VFQFPN 32 5x5x1.0 | Tape And Reel | 1.2 | 1000 | NEC | EAR99 | PHILIPPINES |
质量和可靠性
