产品概述
描述
PM6680A is a dual step-down controller specifically designed to provide extremely high efficiency conversion, with losses 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 PM6680A provides a selectable switching frequency, allowing three different values of switching frequencies for the two operation of the two switching sections. The output voltages OUT1 and OUT2 can be adjusted from 0.9V to 5V and from 0.9V to 3.3V respectively.
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所有功能
- Selectable pulse skipping at light loads
- Latched OVP and UVP
- 5mW maximum quiescent power
- Selectable minimum frequency (33kHz) in pulse skip mode
- Output voltage ripple compensation
- Independent power good signals
- Thermal shutdown
- Soft-start internally fixed at 2ms
- Valley current sensing
- 6V to 36V input voltage range
- 5V LDO delivers 100mA peak current
- Adjustable output voltages
- Current sensing using low side MOSFETs RDS(on)
- Soft output discharge
- 1.237V ±1% reference voltage available externally
电路原理图
EDA符号、封装和3D模型
STMicroelectronics - PM6680A
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符号
封装
3D模型
样片和购买
| 产品型号 | Order from distributors | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| PM6680ATR | distributors 无法联系到经销商，请联系我们的销售办事处 | 批量生产 | EAR99 | NEC | Tape and Reel | VFQFPN 32 5x5x1.0 mm | - | - | PHILIPPINES | | ||
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