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The ST1S41 is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.
The ST1S41 integrates 95 mΩ high-side switch and 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.
The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
The ST1S41 is available in VFQFPN 4 mm x 4 mm 8-lead package and HSOP-8.主要特性
- 4 A output current
- 4.0 V to 18 V input voltage
- Output voltage adjustable from 0.8 V
- 850 kHz switching frequency
- Internal soft-start
- Integrated 95 mΩ and 69 mΩ power MOSFETs
- All ceramic capacitor
- Enable
- Cycle-by-cycle current limiting
- Current foldback short-circuit protection
- VFQFPN 4x4-8L and HSOP-8 packages
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评估工具
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图片 产品型号 制造商 描述 
STEVAL-ISA108V1 -- 基于ST1S41（VFQFPN封装）的4 A 850 kHz固定频率PWM同步降压演示板 产品型号基于ST1S41（VFQFPN封装）的4 A 850 kHz固定频率PWM同步降压演示板
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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** |
|---|---|---|---|---|---|
| ST1S41PHR |
批量生产
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PowerSO-8 | 工业 | Ecopack2 | |
| ST1S41PUR |
批量生产
|
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 。
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样片和购买
| 产品型号 | 从分销商订购 | 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 | |||||||||||
| ST1S41PUR | 3 distributors | 立即购买 |
批量生产
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EAR99 | NEC | Tape And Reel | DFN8 4x4 | - | - | MALAYSIA | 0.788 / 1k | |
| ST1S41PHR | 5 distributors | 立即购买 |
批量生产
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EAR99 | NEC | Tape And Reel | PowerSO-8 | - | - | PHILIPPINES | 0.788 / 1k | |
