Datasheet > SS6577COTB

SS6577COTB

更新时间： 2024-11-21 06:13:59

品牌	Logo	应用领域
SSC		控制器
页数	文件大小	规格书
14页	700K
描述
External NMOS Step-Down PWM Controller

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SS6577COTB 数据手册

SS6577

External NMOS Step-Down PWM Controller

DESCRIPTION

FEATURES

N-Channel MOSFET Drive

The SS6577 is a current-mode switching

Operating input voltage from 4.5V to 24V

Wide output Range : 0.8V to 20V

regulator controller that drives an external

N-channel power MOSFET using a fixed fre-

quency architecture. It uses an external divider to

adjust the output voltage from 0.8V to 20V with

excellent line and load regulation. A maximum

high duty-cycle limit of 95% provides low

dropout operation which extends operating

time in battery-operated systems.

Reference: ±1.5% 0.8V Reference

Low dropout operation : 95% duty cycle

Fixed constant frequency - 500kHz

Low standby current, I _Qtypically 720µA

Logic-control micropower shutdown

Output overvoltage protection

Internal diode for bootstrapped gate drive

Current-mode operation for excellent line and

A constant switching frequency of 500KHz is

used thus allowing smaller sized filter

components. The operating current level is

user-programmable via an external current

sense resistor. It also provides output overvolt-

age protection under fault conditions.

load transient response

Available in 8-lead SO or MSOP packages

APPLICATIONS

LCD Monitor

A multifunction pin (ITH/RUN) allows external

compensation for optimum load step re-

sponse plus shutdown. Soft start can also be

implemented with this pin to properly se-

quence supplies. Packages available are

SOP-8 and MSOP-8 for SMD.

Palmtop Computers, PDAs

Wireless Modems

On-Card Switching Regulators

DC Power Distribution Systems

Rev.1.02 3/26/2004

www.SiliconStandard.com

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