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SC420AIMLTRT

更新时间： 2024-09-27 04:05:23

品牌	Logo	应用领域
商升特 - SEMTECH		驱动器
页数	文件大小	规格书
16页	744K
描述
High Speed, Combi-SenseTM, Synchronous Power MOSFET Driver for Mobile Applications

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SC420AIMLTRT 数据手册

SC420A

High Speed, Combi-Sense^TM, Synchronous

Power MOSFET Driver for MobileApplications

POWER MANAGEMENT

Description

Features

The SC420A is a cost effective Dual MOSFET Driver, in-

corporating Semtech’s patented Combi-Sense^TMtechnol-

ogy, designed for switching High and Low side Power

u High efficiency

u Shutdown mode for increased power saving

u Fast rise and fall times (10ns typical with 3000pF

load)

MOSFETs in Step-down Switching regulators. A 30ns max

POWER MANAGEMENT

propagation delay from input transition to the gate of

the power FET’s guarantees operation at high switching

frequencies. Internal overlap protection circuit prevents

shoot-through from Vin to GND in the main and synchro-

nous MOSFETs.

u 5V gate drive

u Ultra-low (<30ns) propagation delay (BG going low)

u Adaptive and programmable non-overlapping gate

drives provide shoot-through protection

u Floating top drive switches up to 27V

u High frequency operation allows use of small

inductors and low cost ceramic capacitors

u Under-voltage lockout

High current drive capability allows fast switching, thus

reducing switching losses at high frequencies without

causing thermal stress on the driver.

u Low quiescent current

The high voltage CMOS process allows operation up to

27 Volts, making the SC420A suitable for adaptor pow-

ered applications. Under-voltage-lockout and over-tem-

perature shutdown features are included for proper and

safe operation. The SC420A is offered in a space saving

MLP-12 package.

u MLP packaging provides superior thermal perfor-

mance in a small footprint

Applications

u High efficiency portable and notebook computers

u Battery powered applications

Conceptual Application Circuit

VIN2

VIN

VIN2

VIN

PWM

BST

Combi-Sense ^TM

Controller IC

CBST

VOUT

SC420A

DRN

GND

CS- CS+

CDELAY

VPN

RVPN

CVPN

Figure 1

Revision: April 1, 2004

United States Patent No. 6,441,597

www.semtech.com

12 3 4 5 6 7...16

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SC420IMLTR	SEMTECH	获取价格	High Speed, Combi-SenseTM, Synchronous Power MOSFET Driver for Mobile Applications
SC420IMLTRT	SEMTECH	获取价格	Half Bridge Based MOSFET Driver, 2A, CMOS, 4 X 4 MM, MLP-12
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