STBB2 - 800 mA，2.5 MHz，高效双模降压-升压DC-DC转换器 - 意法半导体STMicroelectronics

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产品概述

描述

The STBB2 is a fixed frequency, high efficiency, buck-boost DC-DC converter which provides output voltages from 1.2 V to 4.5 V starting from input voltage from 2.4 V to 5.5 V. The device can operate with input voltages higher than, equal to, or lower than the output voltage making the product suitable for single Li-Ion, multi-cell alkaline or NiMH applications where the output voltage is within the battery voltage range. The low-R_DS(on)N-channel and P-channel MOSFET switches are integrated and help to achieve high efficiency. The MODE pin allows the selection between auto mode and forced PWM mode, taking advantage from either lower power consumption or best dynamic performance. The bypass function allows the battery power saving. In this operating mode, the high-side switches are turned on so that the output voltage is equal to the input voltage; in this condition the current consumption is reduced to a maximum of 5 μA. The device also includes soft-start control, thermal shutdown, and current limit. The STBB2 is packaged in Flip Chip 20 bumps with 0.4 mm pitch.

所有功能
Operating input voltage range from 2.4 V to 5.5 V

± 2% output voltage tolerance over process and temperature variations

Bypass power save function

Selectable output voltage with dedicated VSEL pin

Very fast line and load transients

2.5 MHz switching frequency

Power save mode (PS) at light load

Typical efficiency higher than 90%

50 μA max. quiescent current

Flip Chip 20 bumps 0.4 mm pitch 2.1 x 1.8 mm
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EDA符号、封装和3D模型

质量与可靠性

产品型号	Marketing Status	包	等级规格	符合RoHS级别	材料声明**
STBB2J30-R	批量生产	CSP P 0.4 mm	工业	Ecopack2	PDF XML
STBB2JAD-R	批量生产	CSP P 0.4 mm	工业	Ecopack2	PDF XML

STBB2J30-R

Package:

CSP P 0.4 mm

Material Declaration**:

STBB2JAD-R

Package:

CSP P 0.4 mm

Material Declaration**:

(**) 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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经销商的可用性 STBB2J30-R

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STBB2J30-R 批量生产

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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。

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