Datasheet > US3036CS

US3036CS

更新时间： 2024-02-27 02:51:39

品牌	Logo	应用领域
UNISEM		控制器
页数	文件大小	规格书
7页	59K
描述
8 PIN PWM SWITCHER CONTROLLER IC

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中文翻译

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US3036CS 数据手册

US3036

8 PIN PWM SWITCHER

CONTROLLER IC

PRELIMINARY DATASHEET

FEATURES

DESCRIPTION

8 pin SOIC Switching Controller with

The US3036 IC provides an 8 pin low cost switching

controller with true short circuit protection all in a

compact 8 pin surface mount package, providing a

low cost switching solution for applications that re-

quire a simple switching regulator from the 5V input where

there is no other supply available. One type of such

application is generating 2.5V standby from the dual

5V(5V and 5V standby) for the next generation proces-

sors. The IC starts below 4.5V supply and drives an

external Pch MOSFET or and external low cost PNP as

the switching element. The IC also includes an error com-

parator for fast transient response, a precise voltage ref-

erence for setting the output voltage as well as a direct

drive of the MOSFET for the minimum part count.

HICCUP Current Limiting Reduces Diode Power

Dissipation to Less than 1% of Normal Opera-

tion

Soft Start Capacitor allows for smooth Output

Voltage ramp up

On board MOSFET driver

Fastest transient response of any controller

method. ( 0 to 100% Duty Cycle in 100 nS )

1% internal voltage reference

Internal Under Voltage Lockout protects

MOSFET during start-up

APPLICATIONS

Single input Switching Regulators such as Simple

5V to 2.5V switcher for RDRAM regulator

TYPICAL APPLICATION

7 6 5

SS CS+ CS- Gnd

US3036

Drv Vcc Vfb NC

2 3

ATX

P.S.

Vout

5V(S.B.)

3036app2-1.0

Typical application of US3036

PACKAGE ORDER INFORMATION

TA (°C)

8 PIN PLASTIC

SOIC (S)

0 TO 70

US3036CS

Rev. 1.1

12/4/98

4-1

12 3 4 5 6 7

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