STEVAL-ISA046V2 [STMICROELECTRONICS]
2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09 with inhibit; 2 A / 3.3 V的高效率同步降压转换器评估的基础上与禁止的ST1S09板
| 型号： | STEVAL-ISA046V2 |
| 厂家： | 
ST |
| 描述： | 2 A / 3.3 V high-efficiency synchronous buck converter evaluation board based on the ST1S09 with inhibit |
| 文件： | 总4页 (文件大小：92K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STEVAL-ISA046V2
2 A / 3.3 V high-efficiency synchronous buck converter
evaluation board based on the ST1S09 with inhibit
Data Brief
Features
■ Input voltage range: 2.7 V to 5.5 V
■ Output voltage: 3.3 V
■ Max I : 2 A
out
■ High internal switching frequency: 1.5 MHz
■ Inhibit function
■ Short-circuit protection
■ ST1S09I in the DFN6 3x3 package
Description
STEVAL-ISA046V2
This evaluation board, based on the ST1S09I
family of synchronous step-down DC-DC
converters, is optimized for powering all low-
voltage applications and, generally, replaces high
current linear solutions when power dissipation
may cause high heating of the application
environment. It provides up to 2 A over an input
voltage range of 2.7 V to 5.5 V.
A high 1.5 MHz switching frequency allows the
use of tiny surface-mount components and in
addition to the resistor divider to set the output
voltage value, an inductor and two capacitors are
required.
The ST1S09I features an inhibit function.
A low output ripple is guaranteed by the current
mode PWM topology and by the use of low ESR
surface-mount ceramic capacitors.
The device is thermally protected and current
limited to prevent damage due to accidental short-
circuit.
The ST1S09 family is available in the DFN6 3x3
package.
March 2008
Rev 1
1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Circuit schematic
STEVAL-ISA046V2
1
Circuit schematic
Figure 1.
Schematic
2/4
STEVAL-ISA046V2
Revision history
2
Revision history
Table 1.
Date
03-Mar-2008
Document revision history
Revision
Changes
1
Initial release.
3/4
STEVAL-ISA046V2
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