Datasheet > SP61346

SP61346

更新时间： 2024-11-25 04:03:23

品牌	Logo	应用领域
西伯斯 - SIPEX		控制器
页数	文件大小	规格书
14页	177K
描述
Dual Supply Synchronous Buck Controller

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SP61346 数据手册

SP6134

Dual Supply Synchronous Buck Controller

FEATURES

■ 3V to 15V Step Down Achieved Using Dual Input

V_CC

BST

■ Small 10-Pin MSOP Package

GND

SP6134

■ 2A to 15A Ouput Capability

SWN

■ Highly Integrated Design, Minimal Components

■ UVLO Detects Both V_CCand V_IN

10 Pin MSOP

V_FB

■ Short Circuit Protection with Auto-Restart

■ On-Board 1.5Ω sink (2Ω source) NFET Drivers

■ Programmable Soft Start

COMP

UVIN

Now Available in Lead Free Packaging

■ Fast Transient Response

■ High Efficiency: Greater than 94% Possible

■ Asynchronous Start-Up into a Pre-Charged Output

■ U.S. Patent #6,922,041

APPLICATIONS

■ 12V DPA

■ Communications Systems

■ Graphics Cards

DESCRIPTION

The SP6134 is a synchronous step-down switching regulator controller optimized for high efficiency. The part is

designed to be especially attractive for dual supply, 12V step down with 5V used to power the controller. This lower V_CC

voltage minimizes power dissipation in the part. The SP6134 is designed to drive a pair of external NFETs using a fixed

600kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal shutdown and output

short circuit protection. The SP6134 is available in the cost and space saving 10-pin MSOP.

TYPICAL APPLICATION CIRCUIT

3.5V - 15V

22µF

16V

22µF

16V

7 6 5

= 5V @ 30mA

FDS6676S

14.5A, 6mΩ

GND

C1, C2

RLF

3.0,5%

2 3

Ceramic

1210

X5R

CBST

1µF

DBST

≤V

OUT IN

MBR0530

0.8V - 3.3V

0 - 10 A

RZ3

7 6 5

Bead

VCC

SP6134

BST

4.64k, 1%

C_VCC

10µF

GND 3

SWN

47µF

6.3V

47µF

6.3V

GND

VFB

68.1k, 1%

CZ3

220pF

221k, 1%

6.3V

0.8V

2 3

COMP

UVIN

FDS6676S

14.5A, 6.0mΩ

C_VCC

CSS

47nF

GND2

Ceramic

8050

RZ2

CZ2

820pF 40.2k, 1%

CP1

100k, 1%

21.5k, 1%

X5R

C3, C4

Ceramic

1210

CF1

100pF

56pF

X5R

=(R1/R2 +1)V

OUT FB

fs=600Khz

Date: 2/16/06

SP6134 Dual Supply, Synchronous Buck Controller

12 3 4 5 6 7...14

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与SP61346相关器件

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SP6134AE3	MICROSEMI	获取价格	Trans Voltage Suppressor Diode, 500W, 114V V(RWM), Bidirectional, 1 Element, Silicon, HERM
SP6134CU	SIPEX	获取价格	Dual Supply Synchronous Buck Controller
SP6134CU/TR	SIPEX	获取价格	Dual Supply Synchronous Buck Controller
SP6134CU-L	EXAR	获取价格	600kHz Synchronous PWM Step Down Controller
SP6134CU-L/TR	EXAR	获取价格	600kHz Synchronous PWM Step Down Controller
SP6134EU	SIPEX	获取价格	Dual Supply Synchronous Buck Controller
SP6134EU/TR	SIPEX	获取价格	Dual Supply Synchronous Buck Controller
SP6134EU-L	EXAR	获取价格	600kHz Synchronous PWM Step Down Controller
SP6134EU-L/TR	EXAR	获取价格	600kHz Synchronous PWM Step Down Controller
SP6134H	EXAR	获取价格	High Voltage, 600kHz Synchronous PWM Step Down Controller