Product overview
描述
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.
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All 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
电路原理图
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STMicroelectronics - PM6680
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| PM6680TR | Active 产品已量产 | VFQFPN 32 5x5x1.0 mm | Industrial | Ecopack2 | - | - | |
PM6680TR
Package:
VFQFPN 32 5x5x1.0 mmMaterial Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
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Sample & Buy
| Part Number | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM6680TR | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
PM6680TR Active