STEVAL-ISA044V5

批量生产
Design Win

基于ST1S10(Power SO-8)的3 A同步900 kHz降压DC-DC转换器,具有抑制功能

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产品概述

描述

The STEVAL-ISA044V5 is a demonstration board based on the ST1S10 device assembled in a Power SO-8 ePad package. The ST1S10 is a step-down DC-DC converter with the inhibit function optimized for powering high voltages in LCD applications and low voltages in digital-core HDD applications. It replaces the high-current linear solution when high power dissipation is an issue.

It provides up to 3 A over an input voltage range of 2.5 V to 18.0 V, and synchronous rectification removes the need for an external Schottky diode. A high internal switching frequency (900 kHz) allows for the use of tiny surface-mount components, as well as a resistor divider to set the output voltage value. Only an inductor and 3 capacitors are required.

The current-mode PWM architecture and stable operation with low-ESR SMD ceramic capacitors result in low output ripple. To maximize power conversion efficiency in light load, the regulator can work in burst mode automatically. The device can operate in PWM mode with a fixed frequency or synchronized to an external frequency. It switches at a frequency of 900 kHz when the SYNC pin is connected to ground or a fixed voltage (less than 5.5 V), and can synchronize the switching frequency between 400 kHz to 1.2 MHz from an external clock applied to the SYNC pin.

A thermal shutdown circuit is integrated and activates at 150 °C. Cycle-by-cycle current limitation provides protection against shorted outputs. The quiescent current is less than 6 μA in the inhibit state.

  • 所有功能

    • Input voltage range: 2.5 V to 18.0 V
    • Max IOUT: 3 A
    • High internal switching frequency : 900 kHz
    • PWM mode operation with a fixed frequency or synchronized to an external frequency between 400 kHz and 1.2 MHz
    • Inhibit pin available
    • Quiescent current : < 6 μA in inhibit state
    • RoHS compliant

质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 WEEE Compliant 材料声明**
STEVAL-ISA044V5
批量生产
CARD 工业 Ecopack2 -

STEVAL-ISA044V5

Package:

CARD

Material Declaration**:

Marketing Status

批量生产

Package

CARD

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

样片和购买

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Board production status
STEVAL-ISA044V5
Available at distributors

经销商的可用性 STEVAL-ISA044V5

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STEVAL-ISA044V5 批量生产

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

产品型号:

STEVAL-ISA044V5

供应商:

-

核心产品:

ST1S10

Board production status:

-

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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