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The ST1S14 is a step-down monolithic power switching regulator able to deliver up to 3 A DC current to the load depending on the application conditions. The high current level is also achieved thanks to a HSOP8 package with exposed frame, that allows to reduce the Rth(JA)down to approximately 40 °C/W. The output voltage can be set from 1.22 V. The device uses an internal N-channel DMOS transistor (with a typical RDS(on)of 200 mΩ) as the switching element to minimize the size of the external components. The internal oscillator fixes the switching frequency at 850 kHz. Power good open collector output validates the regulated output voltage as soon as it reaches the regulation. Pulse-by-pulse current limit offers an effective constant current short-circuit protection. Current foldback decreases overstress in a persistent short-circuit condition.
主な特徴
- 3 A DC output current
- Operating input voltage from 5.5 V to 48 V
- 850 kHz internally fixed switching frequency
- Internal soft-start
- Power good open collector output
- Current mode architecture
- Embedded compensation network
- Zero load current operation
- Internal current limiting
- Inhibit for zero current consumption
- 2 mA maximum quiescent current over temperature range
- 250 mΩ typ. RDS(on)
- Thermal shutdown
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画像 製品型番 製造元 概要 
STEVAL-ISA095V1 ST Up to 3 A step-down switching regulator based on the ST1S14 製品型番Up to 3 A step-down switching regulator based on the ST1S14
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| 製品型番 | 製品ステータス | パッケージ | グレード | RoHSコンプライアンスグレード | 材料宣誓書** |
|---|---|---|---|---|---|
| ST1S14PHR | 量産中 | PowerSO-8 | Industrial | Ecopack2 |
(**) st.comで提供している材料宣誓書は、パッケージ･ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください
