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The L9942 is an integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile look-up-table to allow a flexible adaptation of the stepper motor characteristics and intended operating conditions. It is possible to use different current profiles depending on target criteria: audible noise, vibrations, rotation speed or torque. The decay mode used in PWM-current control circuit can be programmed to slow-, fast-, mixed-and auto-decay. In autodecay mode device will use slow decay mode if the current for the next step will increase and the fast decay or mixed decay mode if the current will decrease. The programmable stall detection is useful in case of head lamp leveling and bending light application, by preventing to run the motor too long time in stall for position alignment. If a stall is detected, the alignment process is closed and the noise is minimized.
特徴
- Two full bridges for max. 1.3 A load(RDSON= 500 mΩ)
- Programmable current waveform with look-up table: 9 entries with 5 bit resolution
- Current regulation by integrated PWM controller and internal current sensing
- Programmable stepping mode: full, half, mini and microstepping
- Programmable slew rate for EMC and power dissipation optimization
- Programmable Fast-, Slow-, Mixed- and Auto-Decay Mode
- Full-scale current programmable with 3 bit resolution
- Programmable stall detection
- Step clock input for reduced μController requirements
- Very low current consumption in standby mode IS< 3 μA, typ. Tj≤ 85 °C
- All outputs short circuit protected with openload, overload current, temperature warning and thermal shutdown
- The PWM signal of the internal PWM controller is available as digital output.
- All parameters are guaranteed for 3 V < Vcc < 5.3 V and for 7 V < Vs < 20 V
ダウンロード
All tools & software
All resources
製品スペック (1)
| Resource title | Latest update | |||
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| 19 Sep 2016 |
19 Sep 2016
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アプリケーションノート (2)
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| 13 May 2019 |
13 May 2019
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| 13 May 2019 |
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技術ノート & 解説 (1)
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| 13 Sep 2018 |
13 Sep 2018
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ユーザ･マニュアル (1)
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| 20 Sep 2013 |
20 Sep 2013
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セレクション･ガイド (2)
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| 02 Apr 2020 |
02 Apr 2020
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| 04 Jan 2021 |
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パンフレット (1)
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| 02 Mar 2020 |
02 Mar 2020
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - L9942
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
Symbols
Footprints
3D models
品質 & 信頼性
| 製品型番 | Marketing Status | 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** |
|---|---|---|---|---|---|
| L9942XP1 |
量産中
|
PowerSSO 24 | オートモーティブ | Ecopack2 | |
| L9942XP1TR |
量産中
|
PowerSSO 24 | オートモーティブ | 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
サンプル & 購入
| 製品型番 | 販売代理店からオーダー | STからオーダー | 製品ステータス | ECCN (US) | ECCN (EU) | 梱包タイプ | パッケージ | 温度（℃） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小 | 最大 | |||||||||||
| L9942XP1TR | 4 distributors | Free Sample Buy Direct |
量産中
|
EAR99 | NEC | Tape And Reel | PowerSSO 24 | - | - | MALAYSIA | 2.3 / 1k | |
| L9942XP1 | 1 distributors | Free Sample Buy Direct |
量産中
|
EAR99 | NEC | Tube | PowerSSO 24 | - | - | MALAYSIA | 2.3 / 1k | |
（*）概算用の希望小売単価（US$）です。現地通貨でのお見積りについては、STのセールス･オフィスまたは販売代理店までお問い合わせください。
