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High efficiency synchronous step-up regulator based on the L6926
  • active 活性

The STEVAL-ISA078V1 demonstration board is a high efficiency monolithic synchronous step-down regulator capable of delivering up to 800 mA of continuous output current and of regulating the output voltage from 0.6 V up to VINthanks to the 100% duty cycle operation capability.

The input voltage ranges from 2 V to 5.5 V.

The control loop architecture is based on a constant frequency peak current mode, while high efficiency at light loads is achieved by a low consumption functionality.

The very low quiescent current (25 μA) and shutdown current (0.2 μA) means that the device is very suitable for supplying battery-powered equipment like PDAs, hand-held terminals, DSCs (digital still cameras) and cellular phones.

The switching frequency is internally set at 600 kHz, but the device can be externally synchronized up to 1.4 MHz. An internal reference voltage of 0.6 V (typ.) allows the device to regulate a minimum output voltage of the same low value.

The low MOSFET RDS(on)ensures high efficiency at high output current.

Additional beneficial features are: hysteretic UVLO, OVP, constant current short-circuit protection, Power Good and thermal shutdown.

The MSOP8 package allows significant space savings on the board.

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Data Brief

Key Features

  • 2 V to 5.5 V battery input range
  • High efficiency: up to 95%
  • Extremely low quiescent current
  • 1 μA max. shutdown supply current
  • 800 mA max. output current
  • Adjustable output voltage from 0.6 V
  • Low dropout operation: up to 100% duty cycle
  • ± 1% output voltage accuracy
  • 600 MHz switching frequency externally synchronizable up to 1.4 MHz
  • Short-circuit protection
  • RoHS compliant


图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB1573: High efficiency synchronous step-up regulator based on the L6926
1.0 1,093 KB

Hardware Resources

Board Manufacturing Specification

描述 版本 大小
STEVAL-ISA078V1 gerber files
2.1 180 KB

Bill of Materials

描述 版本 大小
1.0 72 KB

Schematic Pack

描述 版本 大小
STEVAL-ISA078V1 schematics
1.0 27 KB

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA078V1ActiveL6926Buy Direct31.85Distributor reported inventory date: 2016-02-11
Distributor NameRegionStockMin. order

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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