L6983I

批量生产
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38 V 10W synchronous iso-buck converter for isolated applications

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样片和购买
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产品概述

描述

The L6983I is a device specifically designed for isolated buck topology. The primary output voltage can be accurately adjusted, whereas the isolated secondary output is derived by using a given transformer ratio. No optocoupler is required. The primary sink capability up to -4.5 A (even during soft-start) allows a proper energy transfer to the secondary side as well as enabling a tracked soft-start of the secondary output. The control loop is based on a peak current mode architecture and the device operates in forced PWM. The 390 ns blanking time filters oscillations, generated by the transformer leakage inductance, making the solution more robust.

The compact QFN16 3x3 mm package and the internal compensation of the L6983I help minimize design complexity and size.

The switching frequency can be programmed in the 200 kHz - 1 MHz range with optional spread spectrum for improved EMC. The EN pin provides enable/disable functionality.

The typical shutdown current is 2 μA when disabled. As soon as the EN pin is pulled up the device is enabled and the internal 1.3 ms soft-start takes place. The L6983I features Power Good open collector that monitors the FB voltage. Pulse by pulse current sensing on both power elements implements an effective constant current protection and thermal shutdown prevents thermal run-away.

  • 所有功能

    • Designed for iso-buck topology
    • 3.5 V to 38 V operating input voltage
    • Primary output voltage regulation / no optocoupler required
    • 4.5 A source / sink peak primary current capability
    • Peak current mode architecture in forced PWM operation
    • 390 ns blanking time
    • 200 kHz to 1 MHz programmable switching frequency. Stable with low ESR capacitor: min 2 µF
    • Internal compensation network
    • 2 μA shutdown current
    • Internal soft-start
    • Enable
    • Overvoltage protection
    • Output voltage sequencing
    • Thermal protection
    • Optional spread spectrum for improved EMC
    • Power Good
    • Synchronization to external clock
    • QFN16 (3x3 mm) package

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Input Specification
Input Specification
V
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V
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Output
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A
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Output Power: 0

EDA符号、封装和3D模型

STMicroelectronics - L6983I

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符号

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3D model

3D模型

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
L6983IQTR
批量生产
QFPN 3X3X0.80 16L PITCH 0.50 工业 Ecopack3

L6983IQTR

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

样片和购买

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产品型号
Order from distributors
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供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
L6983IQTR Available at distributors

经销商的可用性 L6983IQTR

代理商名称
地区 库存 最小订购量 第三方链接

代理商库存报告日期:

无法联系到经销商,请联系我们的销售办事处
批量生产
EAR99 NEC Tape and Reel QFPN 3X3X0.80 16L PITCH 0.50 - - CHINA

L6983IQTR 批量生产

封装:
QFPN 3X3X0.80 16L PITCH 0.50
ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

产品型号:

L6983IQTR

ECCN (EU):

NEC

包装类型:

Tape and Reel

Operating Temperature (°C)

Min:

-

Max:

-

Country of Origin:

CHINA

代理商名称

代理商库存报告日期:

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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