STEVAL-ISA077V1 [STMICROELECTRONICS]
High efficiency synchronous rectifier step-up converter demonstration board based on the L6920DB; 高效率同步整流升压基础上， L6920DB转换器演示板
| 型号： | STEVAL-ISA077V1 |
| 厂家： | 
ST |
| 描述： | High efficiency synchronous rectifier step-up converter demonstration board based on the L6920DB |
| 文件： | 总4页 (文件大小：96K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STEVAL-ISA077V1
High efficiency synchronous rectifier step-up converter
demonstration board based on the L6920DB
Data brief
Features
■ Up to 5.5 V operating input voltage
■ Internal synchronous rectifier
■ Adjustable output voltage from 1.8 V
■ 3.3 V and 5 V fixed output voltages
■ Low battery voltage detection
■ Reverse battery protection
■ 750 mA input current limit
■ Switching frequency up to 1 MHz
■ RoHS compliant
STEVAL-ISA077V1
Description
The STEVAL-ISA077V1 demonstration board is
based on the L6920DB which is a high efficiency
monolithic step-up switching converter IC
especially designed for battery powered
applications, thanks to its minimum startup of 0.8
V, and a minimum operating voltage of 0.6 V.
It requires only three external components to
realize the conversion from battery voltage to the
selected output voltage.
It has a minimum output voltage of 1.8 V, which is
enough to supply even the most advanced ASICs
and microprocessors.
The high switching frequency allows the user to
choose small inductors and output capacitors for
their designs. Supervisory functions include
reference voltage, low battery detection, and
shutdown, which are provided with overcurrent
protection.
November 2010
Doc ID 18237 Rev 1
1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Circuit schematic
STEVAL-ISA077V1
1
Circuit schematic
Figure 1.
Schematic circuit
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Doc ID 18237 Rev 1
STEVAL-ISA077V1
Revision history
2
Revision history
Table 1.
Date
17-Nov-2010
Document revision history
Revision
Changes
1
Initial release.
Doc ID 18237 Rev 1
3/4
STEVAL-ISA077V1
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Doc ID 18237 Rev 1
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