參數(shù)資料
型號: PIP250M
英文描述: Integrated buck converter
中文描述: 集成的降壓轉(zhuǎn)換器
文件頁數(shù): 19/19頁
文件大小: 334K
代理商: PIP250M
Koninklijke Philips Electronics N.V. 2003.
Printed in The Netherlands
All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner.
The information presented in this document does not form part of any quotation or
contract, is believed to be accurate and reliable and may be changed without notice. No
liability will be accepted by the publisher for any consequence of its use. Publication
thereof does not convey nor imply any license under patent- or other industrial or
intellectual property rights.
Date of release: 21 February 2003
Document order number: 9397 750 10904
Contents
Philips Semiconductors
PIP250M
Integrated buck converter
1
2
3
4
5
6
6.1
6.2
7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
7.1.6
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information. . . . . . . . . . . . . . . . . . . . . 1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 3
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
Functional description . . . . . . . . . . . . . . . . . . . 4
Pin functions. . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Output stage supply (V
DDO
, V
SSO
) . . . . . . . . . . 4
Output voltage (VO) . . . . . . . . . . . . . . . . . . . . . 4
Control circuit supply (V
DDC
, V
SSC
). . . . . . . . . . 4
Bootstrap capacitor connection (CB) . . . . . . . . 4
Voltage feedback pin (FB). . . . . . . . . . . . . . . . . 4
Current limit set and enable
input (OCSET/ENABLE) . . . . . . . . . . . . . . . . . 4
Sense connection for current limit (PHASE). . . 4
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Single supply operation . . . . . . . . . . . . . . . . . . 5
Regulated output voltage . . . . . . . . . . . . . . . . . 5
Power on reset . . . . . . . . . . . . . . . . . . . . . . . . . 5
Soft start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Overcurrent protection . . . . . . . . . . . . . . . . . . . 6
Undervoltage and overvoltage protection. . . . . 7
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 8
Thermal characteristics. . . . . . . . . . . . . . . . . . . 9
Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application information. . . . . . . . . . . . . . . . . . 11
Marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 13
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Introduction to soldering HVQFN packages . . 14
Rework guidelines . . . . . . . . . . . . . . . . . . . . . 15
Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
PCB design guidelines . . . . . . . . . . . . . . . . . . 15
Solder paste printing. . . . . . . . . . . . . . . . . . . . 16
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 17
Data sheet status. . . . . . . . . . . . . . . . . . . . . . . 18
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.1.7
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
8
9
10
11
12
13
14
14.1
14.2
15
15.1
15.2
16
17
18
19
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