製品概要
概要
The A7987 is a step-down monolithic switching regulator that can deliver up to 3 A DC. The adjustable output voltage ranges from 0.8 V to VIN. The wide input voltage range and the almost 100% duty cycle capability meet the fail-safe specifications for automotive systems. The embedded switch-over feature on the VBIAS pin maximizes efficiency at light load. The adjustable current limitation, designed to select the inductor RMS current in accordance with the nominal output current, and the high switching frequency capability make the size of the application compact. Pulse-by-pulse current sensing with digital frequency fold-back implements an effective constant current protection over the different application conditions. The peak current fold-back decreases the stress of the power components in heavy short-circuit conditions. The PGOOD open collector output can also implement the output voltage sequencing during the power-up phase. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise for low noise requirements such as in infotainment applications.
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特徴
- 3 A DC output current
- 4.5 V to 61 V operating input voltage
- Adjustable fsw (250 kHz to 1.5 MHz)
- Output voltage adjustable from 0.8 V to VIN
- 同期化
- Adjustable soft-start time
- Adjustable current limitation
- VBIAS improves efficiency at light load
- PGOOD open collector output
- Digital frequency fold-back in short-circuit
- Auto-recovery thermal shutdown
- Qualified following AEC-Q100 requirements
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| タイトル | バージョン | 更新日 |
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製品スペック (1)
| タイトル | バージョン | 更新日 | ||
|---|---|---|---|---|
| 3.0 | 12 Oct 2020 | 12 Oct 2020 |
技術ノート & 解説 (2)
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|---|---|---|---|---|
| 2.4 | 11 Jul 2023 | 11 Jul 2023 | ||
| 1.0 | 02 May 2023 | 02 May 2023 |
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| 2.2 | 02 Aug 2023 | 02 Aug 2023 |
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| 4.0 | 22 Mar 2023 | 22 Mar 2023 | ||
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STMicroelectronics - A7987
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| 製品型番 | マーケティング･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** |
|---|---|---|---|---|---|
| A7987TR | 量産中 | HTSSOP16 | オートモーティブ | Ecopack2 | |
A7987TR
Package:
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| 製品型番 | Order from distributors | STから購入 | 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| A7987TR | distributors 販売代理店に在庫がない場合は、STのセールス･オフィスまでお問い合わせください | 量産中 | EAR99 | NEC | Tape and Reel | HTSSOP16 | - | - | PHILIPPINES | | ||
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