SC1408IMS.TR Просмотр технического описания (PDF) - Semtech Corporation

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SC1408IMS.TR

Low Voltage, Boost DC-DC Controller

Semtech Corporation 

SC1408

POWER MANAGEMENT

Pin Configuration

Ordering Information

TOP VIEW

GATE

1

BST

2

FB

3

SHDN

4

8

ISENSE

7

GND

6

AGND

5

REF

(SO-8/MSOP-8)

Pin Descriptions

Pin #

Pin Name

Part Number

Package (1) Temp Range (TA)

SC1408IS.TR

SC1408ISTRT(2)

SO-8

-40° to +85°C

SC1408IMS.TR

SC1408IMSTRT(2)

MSOP-8(3)

Notes:

(1) Only available in tape and reel packaging. A reel

contains 2500 devices.

(2) Lead free product. This product is fully WEEE and

RoHS compliant.

(3) Contact factory for MSOP availability

Pin Function

1

GATE

Gate drive output.

2

BST

3

FB

4

SHDN

5

REF

6

AGND

7

GND

8

ISENSE

Block Diagram

Supply voltage.

Voltage feedback

Logic high shuts down the converter.

Reference output pin.

Small signal analog and digital ground.

Power ground.

Current sense pin.

REF

FB

1.20V

REFERENCE

ERROR

COMP

+

-

MODE

DETECT -

+

50mV

VDD

BIAS

SHDN

MIN OFF TIME

ONE SHOT

Q TRIG

2.3uS

TRIG Q

16uS

MAX ON TIME

ONE SHOT

S

Q

R

LOW

VOLTAGE

OSCILLATOR

START

UP

COMP

+

-

+

CURRENT

-

SENSE AMP

2.5V

0.1V

BST

GATE

GND

ISENSE

AGND

 2005 Semtech Corp.

4

www.semtech.com

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