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The ST1S31 device is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. The ST1S31 operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.
The ST1S31 integrates a 60 mΩ high-side switch and a 45 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 ST1S31 device is available in 3 mm x 3 mm, 8 lead VFDFPN and SO8 packages.主要特性
- 3 A DC output current
- 2.8 V to 5.5 V input voltage
- Output voltage adjustable from 0.8 V
- 1.5 MHz switching frequency
- Internal soft-start and enable
- Integrated 60 mΩ and 45 mΩ power MOSFETs
- All ceramic capacitor
- Power Good (POR)
- Cycle-by-cycle current limiting
- Current foldback short-circuit protection
- VFDFPN 3 x 3 - 8L, SO8 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-ISA069V1 -- 基于ST1S31的3 A / 1.5 MHz同步降压开关稳压器，DFN 3x3封装 
STEVAL-ISA070V1 -- 基于ST1S31的3 A / 1.5 MHz同步降压开关稳压器，SO-8封装 产品型号基于ST1S31的3 A / 1.5 MHz同步降压开关稳压器，DFN 3x3封装
基于ST1S31的3 A / 1.5 MHz同步降压开关稳压器，SO-8封装
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eDesignSuite
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 | |||||||||||
| ST1S31PUR | 4 distributors | 样片和购买 立即购买 |
批量生产
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EAR99 | NEC | Tape And Reel | VFDFPN 8 3x3x1.0 | - | - | MALAYSIA | 0.535 / 1k | |
