SP7662ERL/TR Datasheet

IC型號(hào)：
SP7662ERL/TR
PDF描述：
Wide Input Voltage Range 12A, 300kHz, Buck Regulator
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1065.63KB
PDF頁(yè)數(shù)：
19頁(yè)
芯片廠家：
SIPEX

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SP7662

Wide Input Voltage Range

12A, 300kHz, Buck Regulator

FEATURES

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4.75V to 22V Input Voltage Range using Single Supply

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3V to 22V Input Voltage Range using Dual Supply

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鹵% 0.8V Reference

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2A Output Capability

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Current Limiting using Inductor DCR

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Built in Low R

DS(ON)

Power Switches

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300 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

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Programmable Soft Start

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Fast Transient Response

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High Efficiency: Greater than 95%

Possible

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Nonsynchronous Start-Up into a Pre-Charged Output

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Available in RoHS Compliant, Lead Free Packaging:

Small 7mm x 4mm DFN

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U.S. Patent #6,922,04

BOTTOM VIEW

Heatsink Pad 1

Connect to Lx

PowerBlox

SP7662

DFN PACKAGE

7mm x 4mm (Option 2)

GND

2 P

GND

3 P

GND

LX 23

2 2

GND 20

GND 19

BST 17

LX 16

LX 15

LX 14

Heatsink Pad 3

Connect to V

INP

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 SP7662 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 SP7662 pro-

vides a fully integrated buck regulator solution using a fixed 300 kHz frequency, PWM voltage mode architecture.

Protection features include UVLO, thermal shutdown, output current limit and short circuit protection. The SP7662

is available in the space saving DFN package

TYPICAL APPLICATION CIRCUIT

VIN

12Vin (9.6V - 16V)

VOUT

22uF

L, SC508-2R7M

2.7uH, 4. mOhm

5.k

ISP

3.30V, 0-12A

5.k

GND PAD

GND

CZ2

SWN PAD

VFB

PGND

GND

VFB

COMP

GND

ISN

ISP

0.uF

6.9k

ISN

VFB

RZ3

453

00uF 00uF

RZ2

4.02k

SP7662

VCC

UVIN

GND

VIN

BST

CZ3

2200pF

3.6k

0nF

CVCC

4.7uF

CP 00pF

CSS

47nF

GND

00pF

VIN PAD

C9 6.8nF

RBST

22nF

CBST

SWN

VIN

SD0AWS

DBST

ISN

ISP

Ohm

2.2nF

Rs2

Ohm

Cs2

2.2nF

Mar -07 Rev AJ

SP7662 Wide Input Voltage Range 2A, 300kHz Buck Regulator

漏 2007 Sipex Corporation

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SP7662ERL/TR Datasheet

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