SC493EVB

更新时间： 2024-11-09 06:10:15

品牌	Logo	应用领域
商升特 - SEMTECH		控制器
页数	文件大小	规格书
28页	531K
描述
EcoSpeedTM Step-down Controller with I2C Interface

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中文翻译

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SC493EVB 数据手册

SC493

EcoSpeed^TMStep-down Controller

with I²C Interface

POWER MANAGEMENT

Features

Description



Input supply voltage range — 3.0V to 28V

Controller supply voltage range — 3.0V to 5.5V

All ceramic solution enabled

The SC493 is a synchronous EcoSpeed^TMbuck power supply

controller. It features an I²C interface and a bootstrap switch in

a space-saving MLPQ 3X3-20 pin package. The SC493 uses

Semtech’s advanced patented adaptive on-time control archi-

tecture to provide excellent light load eﬃciency and fast tran-

sient response with small external components.

I²C interface

Output voltage ﬁne adjust control

Output voltage margining

Supports dynamic voltage transitions via the I²C

interface

The I²C interface is used to program the output voltage

oﬀset, the power-on delay time, the soft-start time, the

power save operating mode, and it can enable/disable the

controller. Additionally, a status register provides informa-

tion on device state and faults.



Programmable power-on delay time and soft-start time

EcoSpeed^TMarchitecture with pseudo ﬁxed-frequency

adaptive on-time control

Switching frequency programmable up to 1MHz

Selectable power save, including ultrasonic

Non-synchronous start-up into pre-biased loads

Over-voltage/under-voltage fault protection

Smart power save



The controller is capable of operating with all ceramic solu-

tions and switching frequencies up to 1MHz. The program-

mable frequency and selectable power save mode oﬀer the

ﬂexibility to optimize the controller for high eﬃciency and

small size.The power save mode can be enabled to maximize

eﬃciency over the entire load range (PSAVE), or switched to

ultrasonic mode to set the minimum frequency to the desired

value (UPSAVE). Power save mode can be disabled for opera-

tion in continuous conduction mode at all loads.

Power good Output

Smart drive^TM

Status register monitoring device operation

Ultra-thin package — 3 x 3 x 0.6 (mm), 20 pin MLPQ-UT

Lead-free and halogen-free

WEEE and RoHS compliant

Additional features include output voltage margining,

cycle-by-cycle current limit, output voltage soft-start, over

and under-voltage protection, controller over-tempera-

ture protection, and output voltage soft-shutdown when

disabled. The SC493 also provides a power good output.

Applications



Printers

Computer peripherals

Typical Application Circuit

VIN

VDD

CIN

R2 R3

RILIM

CBST

BST

VOUT

PGD

SCL

PGD

SCL

SC493

SDA

COUT

US Patent: 7,714,547 B2

June 10, 2010

12 3 4 5 6 7...28

中文翻译

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与SC493EVB相关器件

型号	品牌	获取价格	描述	数据表
SC493ULTRT	SEMTECH	获取价格	EcoSpeedTM Step-down Controller with I2C Interface
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SC-4P1-GT	SAMTEC	获取价格	PCB Terminal
SC-4P1-TT	SAMTEC	获取价格	PCB Terminal
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SC-5	COOPER	获取价格	SC Class G, 600Vac/480Vac, 1â2-60A
SC-50	COOPER	获取价格	Electric Fuse, Fast And Time Delay Blow, 50A, 480VAC, 300VDC, 100000A (IR), Inline/holder,
SC-500	SLPOWER	获取价格	Output voltages from 3.3 V to 48 V
SC50004450	SKYWORKS	获取价格	MIS Chip Capacitors

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