产品概述
描述
The ST1S10 is a high efficiency step-down PWM current mode switching regulator capable of providing up to 3 A of output current. The device operates with an input supply range from 2.5 V to 18 V and provides an adjustable output voltage from 0.8 V (VFB) to 0.85 * VIN_SW[VOUT= VFB * (1 + R1/R2)]. It operates either at a 900 kHz fixed frequency or can be synchronized to an external clock (from 400 kHz to 1.2 MHz). The high switching frequency allows the use of tiny SMD external components, while the integrated synchronous rectifier eliminates the need for a Schottky diode. The ST1S10 provides excellent transient response, and is fully protected against thermal overheating, switching overcurrent and output short-circuit.
The ST1S10 is the ideal choice for point of load regulators or LDO pre-regulation.
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所有功能
- Step-down current mode PWM regulator
- Output voltage adjustable from 0.8 V
- Input voltage from 2.5 V up to 18 V
- 2% DC output voltage tolerance
- Synchronous rectification
- Inhibit function
- Synchronizable switching frequency from 400 kHz up to 1.2 MHz
- Internal soft start
- Dynamic short-circuit protection
- Typical efficiency: 90%
- 3 A output current capability
- Standby supply current: max. 6 μA over temperature range
- Operative junction temp.: from -40 °C to 125 °C
电路原理图
eDesignSuite
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EDA符号、封装和3D模型
STMicroelectronics - ST1S10
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符号
封装
3D模型
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| ST1S10PHR | NRND | PowerSO-8 | 工业 | Ecopack2 | |
| ST1S10PUR | NRND | DFN8 4x4 | 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。
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 | |||||||||||
| ST1S10PHR | distributors 无法联系到经销商，请联系我们的销售办事处 | NRND | EAR99 | NEC | Tape and Reel | PowerSO-8 | -25 | 125 | CHINA | | ||
| ST1S10PUR | distributors 无法联系到经销商，请联系我们的销售办事处 | NRND | EAR99 | NEC | Tape and Reel | DFN8 4x4 | -25 | 125 | MALAYSIA | | ||