-
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.Key Features
- 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
サンプル & 購入
| 製品型番 | パッケージ | 梱包タイプ | 製品ステータス | 概算価格（USS） | 数量 | ECCN (US) | Country of Origin | 販売代理店からオーダー | STからオーダー |
|---|---|---|---|---|---|---|---|---|---|
| ST1S31D-R | SO-8 | Tape And Reel |
アクティブ
|
0.471 | 10000 | EAR99 | CHINA | 在庫チェック | 購入 |
| ST1S31PUR | VFDFPN 8 3x3x1.0 | Tape And Reel |
アクティブ
|
0.535 | 10000 | EAR99 | MALAYSIA | 在庫チェック | サンプル入手 |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
ビデオ
評価ツール
-
-
写真 Part number 製造元 概要 
STEVAL-ISA069V1 -- 3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package 
STEVAL-ISA070V1 -- 3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in SO-8 package 製品型番3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package
3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in SO-8 package
-
| 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 | Material Declaration** |
|---|---|---|---|---|---|
| ST1S31D-R |
アクティブ
|
SO-8 | インダストリアル | Ecopack2 |
|
| ST1S31PUR |
アクティブ
|
VFDFPN 8 3x3x1.0 | インダストリアル | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
