SP6138

更新时间： 2024-11-25 04:03:23

品牌	Logo	应用领域
西伯斯 - SIPEX		二极管控制器局域网
页数	文件大小	规格书
17页	961K
描述
Synchronous Buck Controller

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中文翻译

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SP6138 数据手册

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SP6138

Synchronous Buck Controller

FEATURES

■ 5V to 24V Input step down converter

■ Up to 3A output in a small form factor

■ Highly integrated design, minimal components

■ UVLO Detects Both V_CCand V_IN

■ Overcurrent circuit protection with auto-restart

■ Power Good Output, ENABLE Input

■ Maximum Controllable Duty Cycle Ratio up to 92%

■ Wide BW amp allows Type II or III compensation

■ Programmable Soft Start

PGND

GND

SP6138

SWN

ISP

ISN

16 Pin QFN

3mm x 3mm

■ Fast Transient Response

■ Available in ꢀ6-Pin QFN package

■ External Driver Enable/Disable

■ U.S. Patent #6,922,04ꢀ

Now Available in Lead Free Packaging

DESCRIPTION

The SP6ꢀ38 is a synchronous step-down switching regulator controller optimized for small

footprint. The part is designed to be especially attractive for single supply step down con-

version from 5V to 24V. The SP6ꢀ38 is designed to drive a pair of external NFETs using a

ﬁxed2.5MHzfrequency, PWMvoltagemodearchitecture. ProtectionfeaturesincludeUVLO,

thermalshutdown, outputshortcircuitprotection, andovercurrentprotectionwithautorestart.

The device also features a PWRGD output and an enable input. The SP6ꢀ38 is available in

a space saving ꢀ6-pin QFN and offers excellent thermal performance.

TYPICAL APPLICATION CIRCUIT

VIN

12V

0.1uF

4.7uF

DBST

CVCC

4.7uF

CBST

0.1uF

MT/MB, Si7214DN

47 mΩ, 30V

(Co-Packaged FETs)

SD101AWS

VCC

GND

VIN

BST

SWN

COOPER, SD25-2R2

2.2uH, 2.8A, 31mΩ

R3 10KΩ

VOUT

PWRGD

POWERGOOD

UVIN

3.3V

0-2A

RS1

1KΩ

RS2

1KΩ

SP6138

ENABLE

GND

22uF

RS3

4.99KΩ

ISP

GND

PGND

COMP

CSP

ISN

6.8nF

0.1uF

VFB

CSS

CP1

6 pF

68.1KΩ, 1%

47nF

CZ3

47pF

RZ3

1KΩ

21.5KΩ, 1%

CF1

18pF

CZ2

100pF

RZ2

54.9KΩ

Note: Die-attach paddle is connected to GND

Oct 24-06 Rev J

SP6ꢀ38 Synchronous Buck Controller

ꢀ

12 3 4 5 6 7...17

中文翻译

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