L4954

L4954 is a quad output voltage regulator and a three output high side driver.

The IC includes monitoring circuitry to warn the microprocessor of a low voltage condition: the LVWarn, output, sensing the slow dropping of STCAP pins voltage, gives the microprocessor time to store data.

A reset output is generated at REG4’s decay.

External protection must be provided for reverse battery protection.

主な特徴

4 regulators:
- 10 V (40 mA) low dropout
- 8.5 V (175 mA)
- 5 V (650 mA)
- 5 V (100 mA) standby
3 high side drivers:
- 2 A (HSD1)
- 0.3 A (HSD2 & HSD3)
No external charge pump capacitors are required
Standby mode controlled by 3 input pins:
- EN1 for REG1, REG2, REG3 and HSD1
- EN2 for HSD2
- EN3 for HSD3
Individual thermal shutdown
Logic outputs for supply undervoltage:
- LVWARN
- リセット
Independent current limiting
Overvoltage shutdown
Short circuit protection
Load dump protection and overvoltage
Shutdown

回路ダイアグラム

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リソース

技術文書

製品スペック

	Description	バージョン	サイズ
	DS6894: Quad multifunction voltage regulator for car radio	2.0	190 KB

Publications and Collaterals

フライヤー

	Description	バージョン	サイズ
	Automotive multichannel power management ICs	1.0	620 KB

セレクションガイド

	Description	バージョン	サイズ
	Power amplifiers and voltage regulators		750 KB
	Smart power solutions for car body applications	4.0	1 MB

パンフレット

	Description	バージョン	サイズ
	Driving smart power in automotive	1.0	1014 KB

サンプル & 購入

製品型番	パッケージ	Packing Type	Operating Temperature (°C) (min)	Operating Temperature (°C) (max)	Marketing Status	Unit Price (US$) *	数量	ECCN (US)	Country of Origin	More info	Order from ST	Order from Distributors
L4954	MW 15L	Tube	-40	85	Active : Product is in volume production	-	-	EAR99	MOROCCO	MORE INFO		No availability reported, please contact our Sales office

(*) 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

品質 & 信頼性

製品型番	Marketing Status	パッケージ	Grade	RoHS Compliance Grade	Material Declaration**
L4954	アクティブ	MW 15L	オートモーティブ	Ecopack1

(**) 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.