Product overview
描述
The ST1S09 is a step-down DC-DC converter optimized for powering low output voltage applications. It supplies a current in excess of 2 A over an input voltage range from 2.7 V to 6 V.
A high PWM switching frequency (1.5 MHz) allows the use of tiny surface-mount components.
Moreover, since the required synchronous rectifier is integrated, the number of the external components is reduced to minimum: a resistor divider, an inductor and two capacitors. The Power Good function continuously monitors the output voltage. An open drain Power Good flag is released when the output voltage is within regulation. In addition, a low output ripple is guaranteed by the current mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermally protected and the output current limited to prevent damages due to accidental short circuit. The ST1S09 is available in the DFN6 (3 x 3 mm) package.
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All features
- Operating junction temp. -30 °C to 125 °C
- Utilizes tiny capacitors and inductors
- Available in DFN6 (3 x 3 mm) exposed pad
- Non switching quiescent current: (typ) 1.5 mA over temperature range
- Integrated output over-voltage protection
- 1.5 MHz fixed frequency PWM with current control mode
- Typical efficiency: > 90%
- 2 A output current capability
- Two versions available: power good or inhibit
- RDSON (typ) 100 mΩ
- 2 % DC output voltage tolerance
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STMicroelectronics - ST1S09
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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** |
|---|---|---|---|---|---|---|---|
| ST1S09IPUR | Active 产品已量产 | DFN6 3x3 | Industrial | Ecopack2 | - | - | |
| ST1S09PUR | Active 产品已量产 | DFN6 3x3 | Industrial | Ecopack2 | - | - |
(**) 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) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| ST1S09IPUR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| ST1S09PUR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
ST1S09IPUR Active
ST1S09PUR Active