TC105 데이터 시트보기 (PDF) - Microchip Technology

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TC105

PFM/PWM Step-Down DC/DC Controller

Microchip Technology 

TC105

FIGURE 4-3:

VIN

2.5V

REGULATOR USING PNP TRANSISTOR

+

10µF

16V –

FZ749

Q1

22µH

Sumida CD-54

MA737

+ 47µF

– 10V Tantalum

CB +

2200 pF –

RB

500

+

5

4–

VOUT

SHDN/SS

TC105

EXT VDD

GND

VOUT

1.8V

RSS

470K

OFF ON

CSS

0.033µF

1

2

3

FIGURE 4-4:

REGULATOR USING P-CHANNEL MOSFET

VIN

10µF +

16V –

Si9430

P

22µH

Sumida CD-54

MA737

5

+

–

47µF

10V Tantalum

VOUT

RSS

470K

OFF ON

+ CSS

4

– 0.033µF

VOUT

SHDN/SS

TC105

EXT VDD

GND

1

2

3

TABLE 4-1: SUGGESTED COMPONENTS AND SUPPLIERS

Type

Surface Mount

Miniature

Through-Hole

Standard

Through-Hole

Inductors

Sumida

CD54 Series

CDRH Series

Coilcraft

DO Series

Capacitors

AVX

TPS Series

Sprague

595D Series

Sumida

RCH Series

Coilcraft

PCH Series

Coiltronics

CTX Series

Sanyo

OS-CON Series

Nichicon

PL Series

United Chemi-Con

LXF Series

Diodes

ON Semiconductor

MBRS340T3

Nihon

NSQ Series

Matsushita

MA737

IRC

OAR Series

Transistors

Silconix

Little Foot MOSFET Series

Zetex FZT749

PNP Bipolar Transistor

Toshiba 2SA1213 PNP

Transistor

ON Semiconductor

TMOS Power MOSFETs

(i.e., MTP30P06V)

© 2002 Microchip Technology Inc.

DS21349B-page 7

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