SC4211(2004) 데이터 시트보기 (PDF) - Semtech Corporation

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SC4211
(Rev.:2004)

Very Low Input /Very Low Dropout 1 Amp Regulator With Enable

Semtech Corporation 

POWER MANAGEMENT

Pin Configuration

Top View

NC

GND

EN

FB

VIN

VO

NC

NC

SOIC-8EDP

SC4211

Ordering Information

Part Number

SC4211STRT(1)(2)(3)

SC4211EVB

Package

SOIC-8EDP

Temp. Range (TA)

-40 to +85 OC

Evaluation Board

Note:

(1) Available voltage is : 0.5V or Output voltage can be adjusted using

external resistors, see Pin Descriptions.

(2) Only available in tape and reel packaging 2500 devices for the

SOIC-8EDP package.

(3) Lead free product.

GND

FB

VO

NC

Bottom View

8

1

7 2 Exposed

Die Pad

6

3

5

4

GND

NC

EN

VIN

NC

SOIC-8EDP

Pin Descriptions

Pin Name Pin Description

FB

When this pin is connected to the Vo pin, the output voltage will be set at 0.5V If external feedback resistors

are used, the output voltage will be (See Application Circuits on page 1):

VO = 0.5 (R1 + R2) Volts

R2

EN Enable Input. Pulling this pin below 0.4V turns the regulator off, reducing the quiescent current to a fraction of

its operating value. The device will be enabled if this pin is left open. Connect to VIN if not being used.

GND

Reference ground. Note: The GND pin and the exposed die pad must be connected together at the IC pin.

Use the exposed die pad on the device for heatsinking.

VIN Input voltage. For regulation at full load, the input to this pin must be between (VO+ 0.5V) and 5.5V. Minimum

VIN = 1.4V. A large bulk capacitance should be placed closely to this pin to ensure that the input supply does

not sag below 1.4V. Also a minimum of 4.7uF ceramic capacitor should be placed directly at this pin.

VO The pin is the power output of the device. A minimum of 10uF ceramic capacitor should be placed directly at

this pin.

 2004 Semtech Corp.

4

www.semtech.com

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