STEVAL-ISA070V1 [STMICROELECTRONICS]
3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in SO-8 package; 基于SO- 8封装的ST1S31 3 A / 1.5MHz的降压型同步开关稳压器
| 型号： | STEVAL-ISA070V1 |
| 厂家： | 
ST |
| 描述： | 3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in SO-8 package |
| 文件： | 总4页 (文件大小：300K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
STEVAL-ISA070V1
3 A / 1.5 MHz step-down synchronous switching regulator based on
the ST1S31 in SO-8 package
Data brief
Features
■ 4 A peak output current
■ 2.8 V to 5.5 V input voltage
■ Output voltage adjustable from 0.8 V
■ 1.5 MHz switching frequency
■ Internal soft-start and enable
■ Integrated 60 mΩand 45 mΩpower MOSFETs
■ All ceramic capacitor
■ Power Good (POR)
■ Cycle-by-cycle current limiting
■ Current foldback short-circuit protection
■ RoHS compliant
Description
The STEVAL-ISA070V1 demonstration board is
based on the ST1S31, an internally compensated
1.5 MHz fixed-frequency PWM synchronous
step-down regulator. This device operates from
2.8 V to 5.5 V input, while it regulates an output
voltage as low as 0.8 V and up to Vin.
The peak current mode control with internal
compensation delivers a very compact solution
with a minimum component count.
April 2012
Doc ID 023067 Rev 1
1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Schematic diagram
STEVAL-ISA070V1
1
Schematic diagram
Figure 1.
Schematic diagram
, ꢃꢄꢃ(
6/54
6).
6).!
#IN?A
2ꢁ
2ꢀ
2ꢃ
34ꢀ3ꢁꢀ
%.
ꢂꢄꢀ n ꢀ &
#OUT
#IN?SW
'.$
ꢃꢃ&
ꢀꢂ&
!-ꢀꢁꢀꢂꢃVꢀ
2/4
Doc ID 023067 Rev 1
STEVAL-ISA070V1
Revision history
2
Revision history
Table 1.
Date
11-Apr-2012
Document revision history
Revision
Changes
1
Initial release.
Doc ID 023067 Rev 1
3/4
STEVAL-ISA070V1
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY TWO AUTHORIZED ST REPRESENTATIVES, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2012 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
4/4
Doc ID 023067 Rev 1
相关型号：
STEVAL-ISA071V1
4 W non-isolated, wide input-voltage range SMPS demonstration board based on the VIPER16
STMICROELECTR
STEVAL-ISA076V2
USB compatible battery charger demo board with integrated power switch for Li-Ion/Li-Polymer based on the L6924U
STMICROELECTR
STEVAL-ISA077V1
High efficiency synchronous rectifier step-up converter demonstration board based on the L6920DB
STMICROELECTR
STEVAL-ISA077V2
High efficiency synchronous rectifier step-up converter demonstration board based on the L6920D
STMICROELECTR
STEVAL-ISA079V2
High-efficiency monolithic synchronous step-down regulator based on the L6928
STMICROELECTR
STEVAL-ISA080V1
90 W HB LLC resonant converter demonstration board based on the L6585DE combo IC
STMICROELECTR
STEVAL-ISA082V1
4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPHR
STMICROELECTR
STEVAL-ISA084V1
4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40
STMICROELECTR
STEVAL-ISA091V1
2 A step-down switching power supply demonstration board based on the L7980 (QFN)
STMICROELECTR
©2020 ICPDF网 联系我们和版权申明