SC2443MLTRT View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC2443MLTRT

Dual-Phase Single or Two Output Synchronous Step-Down Controller

Semtech Corporation 

SC2443

Block Diagram

SYNC

3

ROSC

24

COMP1

2

IN1-

1

REF/IN1+

5

OSCILLATOR

-

EA1

+

+ 0.5V

-

-

PWM

+

CS1+

22

CS1-

23

+

-

ISEN

SLOPE

COMP

+

+

6

COMP2

7

IN2-

8

REFIN/IN2+

6

AGND

4

75mV

110mV

+- ILIM+

-

ILIM-

+

- EA2

+

+-

OCN

0.72 VREFOUT

CLK2

CLK1

REFERENCE

UVLO

4.3/4.5V

R

Q

S

UVLO

0.75 VREF

Soft-Start And

Overload

Hiccup

Control

OL

DSBL

Non-Overlapping

Conduction

Control

AVCC

12

BST1

20

GDH1

19

PVCC

17

GDL1

18

PGND

16

SS1/EN1

21

SC2443 Block Diagram (Channel 1 PWM Control Only)

Figure 1. SC2443 Block Diagram

10

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