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The L4975A is a stepdown monolithic power switching regulator delivering 5A at a voltage variable from 5.1 to 40V.
Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4975A include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components. Efficient operation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter component.
特徴
- UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
- INPUT/OUTPUT SYNC PIN
- VERY HIGH EFFICIENCY
- PWM LATCH FOR SINGLE PULSE PER PERIOD
- THERMAL SHUTDOWN
- SWITCHING FREQUENCY UP TO 500KHz
- CONTINUOUS MODE OPERATION
- RESET AND POWER FAIL FUNCTIONS
- PRECISE 5.1V ± 2% ON CHIP REFERENCE
- 5A OUTPUT CURRENT
- 0 TO 90% DUTY CYCLE RANGE
- 5.1V TO 40V OUTPUT VOLTAGE RANGE
- INTERNAL CURRENT LIMITING
- SOFT START
- INTERNAL FEED-FORWARD LINE REG.
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注目ビデオ
All resources
製品スペック (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 19 Sep 2016 |
19 Sep 2016
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技術ノート & 解説 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 20 Jan 2020 |
20 Jan 2020
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Design Notes & Tips (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 16 Jul 2019 |
16 Jul 2019
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パンフレット (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 23 Mar 2020 |
23 Mar 2020
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EDA Symbols, Footprints and 3D Models
STMicroelectronics - L4975A
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品質 & 信頼性
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$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小 | 最大 | |||||||||||
| L4975A | 7 distributors | Buy Direct |
量産中
|
EAR99 | NEC | Tube | MW 15L | - | - | MOROCCO | 6.798 / 1k | |
（*）概算用の希望小売単価（US$）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。
