L6983

批量生产
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38V、3A同步降压转换器,静态电流为17μA

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产品概述

描述

L6983是一种易于使用的同步单片降压调节器,能够向负载提供高达3 A的电流。宽的输入电压范围使该器件适用于广泛的应用领域。L6983基于峰值电流模式架构,采用QFN16 3x3封装,带内部补偿功能,从而使设计复杂性和尺寸降至最低。

L6983有低功耗模式(LCM)和低噪声模式(LNM)两个版本。LCM最大限度提高了轻负载时的效率,且输出电压纹波可控,因此该器件适用于电池供电的应用。LNM使开关频率保持恒定,并在轻负载工作时将输出电压纹波降至最低,满足低噪声敏感型应用的要求。L6983允许在200 KHz - 2.2 MHz范围内选择开关频率,并以可选扩展频谱改善EMC。

EN引脚提供启动/关闭功能。禁用之后,典型的关断电流是2 µA。一旦置高EN引脚,器件就被启动,会有1.3 ms内部软启动。L6983的“PGOOD”采用集电极开路输出,用于监测FB电压。两个功率元件上的逐波电流检测实现了有效的恒定电流保护和热关断,防止温升失控。

  • 所有功能

    • 3.5 V至38 V 工作输入电压
    • 输出电压从0.85 V到VIN
    • 3.3 V和5 V固定输出电压版本
    • 3 A DC输出电流
    • 工作静态电流为17 μA
    • 内部补偿网络
    • 两种不同的版本:LCM确保低负载时的高效率,而LNM 适用于噪声敏感型应用。
    • 2 μA关断电流
    • 内部软启动
    • 使能
    • 过电压保护
    • 输出电压序时序
    • 过温保护
    • 开关频率从200 kHz至2.3 MHz可调使用低ESR电容时仍可稳定工作
    • 以可选扩展频谱改善EMC
    • 电源正常信号
    • LNM版本可与外部时钟同步
    • QFN16封装

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STMicroelectronics - L6983

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质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 材料声明**
L6983C33QTR
批量生产
QFPN 3X3X0.80 16L PITCH 0.50 工业 Ecopack3
L6983C50QTR
批量生产
QFPN 3X3X0.80 16L PITCH 0.50 工业 Ecopack3
L6983CQTR
批量生产
QFPN 3X3X0.80 16L PITCH 0.50 工业 Ecopack3
L6983N33QTR
批量生产
QFPN 3X3X0.80 16L PITCH 0.50 工业 Ecopack3
L6983N50QTR
批量生产
QFPN 3X3X0.80 16L PITCH 0.50 工业 Ecopack3
L6983NQTR
批量生产
QFPN 3X3X0.80 16L PITCH 0.50 工业 Ecopack3

L6983C33QTR

Package:

QFPN 3X3X0.80 16L PITCH 0.50

Material Declaration**:

Marketing Status

批量生产

Package

QFPN 3X3X0.80 16L PITCH 0.50

Grade

Industrial

RoHS Compliance Grade

Ecopack3

L6983C50QTR

Package:

QFPN 3X3X0.80 16L PITCH 0.50

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

QFPN 3X3X0.80 16L PITCH 0.50

Grade

Industrial

RoHS Compliance Grade

Ecopack3

L6983CQTR

Package:

QFPN 3X3X0.80 16L PITCH 0.50

Material Declaration**:

Marketing Status

批量生产

Package

QFPN 3X3X0.80 16L PITCH 0.50

Grade

Industrial

RoHS Compliance Grade

Ecopack3

L6983N33QTR

Package:

QFPN 3X3X0.80 16L PITCH 0.50

Material Declaration**:

Marketing Status

批量生产

Package

QFPN 3X3X0.80 16L PITCH 0.50

Grade

Industrial

RoHS Compliance Grade

Ecopack3

L6983N50QTR

Package:

QFPN 3X3X0.80 16L PITCH 0.50

Material Declaration**:

Marketing Status

批量生产

Package

QFPN 3X3X0.80 16L PITCH 0.50

Grade

Industrial

RoHS Compliance Grade

Ecopack3

L6983NQTR

Package:

QFPN 3X3X0.80 16L PITCH 0.50

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

QFPN 3X3X0.80 16L PITCH 0.50

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

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L6983C33QTR
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L6983CQTR
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经销商的可用性 L6983CQTR

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L6983N33QTR
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经销商的可用性 L6983N33QTR

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L6983N50QTR
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经销商的可用性 L6983N50QTR

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L6983C50QTR
Available at distributors

经销商的可用性 L6983C50QTR

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L6983NQTR
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经销商的可用性 L6983NQTR

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L6983N33QTR 批量生产

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L6983N50QTR 批量生产

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L6983C50QTR 批量生产

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L6983C50QTR

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L6983NQTR 批量生产

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L6983NQTR

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(*) 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