产品概述
描述
The ST1S12 is a step down DC-DC converter optimized for powering low-voltage digital cores in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause high heating of the application environment. It provides up to 0.7 A over an input voltage range of 2.5 V to 5.5 V. A high switching frequency (1.7 MHz) allows the use of tiny surface-mount components. In addition to the resistor divider to set the output voltage value, only an inductor and two capacitors are required. Moreover, 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 current is limited to prevent damage due to accidental short-circuit. The ST1S12 is available in the TSOT23-5L package.
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所有功能
- Step-down current mode PWM (1.7 MHz) DC-DC converter
- 3% DC output voltage tolerance
- Synchronous rectification
- Fixed output voltage 1.2 V, 1.8 V, and ADJ (available on request 1.5 V, 2.5 V and 3.3 V)
- Enable function
- Internal soft start
- Typical efficiency: > 90%
- 0.7 A output current capability
- Not switching quiescent current: max 650 μA over temperature range
- RDSONtyp. 250 mΩ and 400 mΩ
- Uses tiny capacitors and inductors
- Operative junction temp. -40 °C to 125 °C
- Available in TSOT23-5L package
电路原理图
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EDA符号、封装和3D模型
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符号
封装
3D模型
质量与可靠性
| 料号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| ST1S12G12R | 批量生产 | TSOT23-5L | 工业 | Ecopack2 | - | - | |
| ST1S12G18R | 批量生产 | TSOT23-5L | 工业 | Ecopack2 | - | - | |
| ST1S12GR | 批量生产 | TSOT23-5L | 工业 | 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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样片和购买
| 料号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||||
| ST1S12G18R | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| ST1S12GR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
| ST1S12G12R | | | distributors 无法联系到经销商，请联系我们的销售办事处 | |||||||||||
ST1S12G18R 批量生产
ST1S12GR 批量生产
ST1S12G12R 批量生产