Voltage regulator with backup and reset, overvoltage protection and low voltage warning

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  • 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.

    Key Features

    • 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
      • 重置
    • Independent current limiting
    • Overvoltage shutdown
    • Short circuit protection
    • Load dump protection and overvoltage
    • Shutdown

电路原理图

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样片和购买

产品型号
封装
包装类型
温度(ºC) 供货状态
预算价格(US$)
数量
ECCN (US)
More info
从分销商订购
从ST订购
min
max
L4954 MW 15L Tube -40 85
批量生产
- - EAR99
MORE INFO

Country of Origin:

MOROCCO

没有经销商,请联系我们的销售办事处

L4954

封装

MW 15L

包装类型

Tube

单价(US$)

*

Operating Temperature (°C)

(min)

-40

(max)

85

供货状态

批量生产

单价(US$)

-

数量

-

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
L4954
批量生产
MW 15L 汽车 Ecopack1

L4954

Package:

MW 15L

Material Declaration**:

Marketing Status

批量生产

Package

MW 15L

Grade

Automotive

RoHS Compliance Grade

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.