L7987L

批量生产
Design Win Education

具有可调电流限值的61 V 2 A异步降压开关稳压器

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产品概述

描述

The L7987L device is a step-down monolithic switching regulator able to deliver up to 2 A DC. The output voltage adjustability ranges from 0.8 V to almost VIN. The embedded switchover feature on the VBIAS pin maximizes the efficiency at light load. The adjustable current limitation, designed to select the inductor RMS current accordingly with the nominal output current, and the high switching frequency capability make the size of the application compact. Pulse-by-pulse current sensing with digital frequency foldback implements an effective constant current protection over the different application conditions. The peak current foldback decreases the stress of the power components in heavy short-circuit condition. The PGOOD open collector output can also implement output voltage sequencing during the power-up phase. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise in low noise applications like sensors with A/D conversion.

  • 所有功能

    • 2 A DC output current
    • 4.5 V to 61 V operating input voltage
    • RDS,ON = 300 mΩ typ.
    • Adjustable fSW (250 kHz - 1.5 MHz)
    • Low IQ-SHD (11 μA typ. from VIN)
    • Low IQ (1 mA typ. - VIN 24 V - VOUT 3.3 V)
    • Output voltage adjustable from 0.8 V to VIN
    • Synchronization
    • Adjustable soft-start time
    • Adjustable current limitation
    • Advanced bootstrap capacitor management for LDO operation
    • VBIAS improves efficiency at light load
    • PGOOD open collector output
    • Output voltage sequencing
    • Digital frequency foldback in short-circuit
    • Peak current foldback in short-circuit
    • Auto-recovery thermal shutdown

eDesignSuite

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太阳能电池充电器

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EDA符号、封装和3D模型

STMicroelectronics - L7987L

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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**
L7987L
批量生产
HTSSOP16 工业 Ecopack2
L7987LTR
批量生产
HTSSOP16 工业 Ecopack2

L7987L

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L7987LTR

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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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L7987LTR
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经销商的可用性 L7987LTR

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L7987L
Available at distributors

经销商的可用性 L7987L

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代理商库存报告日期:

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L7987LTR 批量生产

Budgetary Price (US$)*/Qty:
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包:
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Country of Origin:
ECCN (US):
ECCN (EU):

产品型号:

L7987LTR

代理商名称

代理商库存报告日期:

L7987L 批量生产

Budgetary Price (US$)*/Qty:
-
包:
包装类型:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

产品型号:

L7987L

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