SP7663 Datasheet

IC型號：
SP7663
PDF描述：
Wide Input Voltage Range 6A, 600kHz, Buck Regulator
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1309.87KB
PDF頁數(shù)：
19頁
芯片廠家：
SIPEX

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SP7663

Wide Input Voltage Range

6A, 600kHz, Buck Regulator

FEATURES

鈻?/div>

4.75V to 22V Input Voltage Range using Single Supply

鈻?/div>

3V to 22V Input Voltage Range using Dual Supply

鈻?/div>

鹵% 0.8V Reference

鈻?/div>

6A Output Capability

鈻?/div>

Current Limiting using Inductor DCR

鈻?/div>

Built in Low R

DS(ON)

Power Switches

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600 kHz Fixed Frequency Operation

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Over Temperature Protection

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Short Circuit Protection with Auto-Restart

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Wide BW Amp Allows Type II or III Compensation

鈻?/div>

Programmable Soft Start

鈻?/div>

Fast Transient Response

鈻?

High Efficiency: Greater than 95%

Possible

鈻?

Nonsynchronous Start-Up into a Pre-Charged Output

鈻?

Available in RoHS Compliant, Lead Free Packaging:

Small 7mm x 4mm DFN

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U.S. Patent #6,922,04

PowerBlox

SP7663

DFN PACKAGE

7mm x 4mm (Option 2)

BOTTOM VIEW

Heatsink Pad 1

Connect to Lx

GND

2 P

GND

3 P

GND

2 2

GND

BST 17

LX 16

LX 15

LX 14

Heatsink Pad 3

Connect to V

Pin 29

Heatsink Pad 2

Connect to GND

Pin 28

Pin 27

5 GND

6 V

7 COMP

9 GND

10 ISN

11 ISP

12 SWN

13 VINP

DESCRIPTION

The SP7663 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed

for use with a single 4.75V to 22V single supply or 3V to 22V input if an external Vcc is provided. The SP7663

provides a fully integrated buck regulator solution using a fixed 600kHz frequency, PWM voltage mode architecture.

Protection features include UVLO, thermal shutdown, output current limit and short circuit protection. The SP7663

is available in the space saving DFN package

TYPICAL APPLICATION CIRCUIT

VOUT

3.30V, 0-6A

4.99K鈩?/div>

RZ3

3.09K鈩?/div>

CZ3

180pF

100uF

DNP

1.5uH, 5.5 m鈩?/div>

4.99K鈩?/div>

SWN PAD

GND PAD

PGND

GND

VFB

COMP

GND

ISN

ISP

C4 .1uF

ISP

ISN

DNP

CZ2

270pF

RZ2

75K鈩?1%

SP7663

VCC

UVIN

GND

VIN

BST

CVCC

4.7uF

CP1 10pF

CSS 47nF

R8 DNP

R12

68.1k鈩?1%

21.5k鈩?1%

GND

CF1

100pF

RBST

VIN PAD

C9 6.8nF

ISN

ISP

Zero鈩?/div>

6.8nF

CBST

SWN

VIN

SD101AWS

DBST

R13

3.3鈩?/div>

Rs1

1 Ohm

Cs1

2.2nF

Rs2

Cs2

VIN

12V

DNP

22uF

1 Ohm 2.2nF

GND

Nov3-06 Rev L

SP7663 Wide Input Voltage Range 6A, 600kHz Buck Regulator

漏 2006 Sipex Corporation

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