CM3718 データシートの表示（PDF） - Champion Microelectronic

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CM3718

1.5A LOW-NOISE PWM STEP-DOWN REGULATOR

Champion Microelectronic 

CM3718

1.5A LOW-NOISE PWM STEP-DOWN REGULATOR

PIN DESCRIPTION

Pin No. Symbol

CM3718

1 VIN

2 GND

3 SD

4 VREF

5 VFB

6 PGND

7 LX

8 PVIN

Description

Operating Rating

Min. Typ. Max. Uni

t

Voltage supply for internal circuits

2

2.5

5.5 V

Ground for internal reference voltage divider

CMOS input level

Shutdown level

Enable level

0.75 x VIN

0

VIN + 0.3 V

2.0

VOUT Set Voltage

Feedback node for the VOUT

Ground for output power transistors

1.1

VIN V

VREF

V

Inductor connection to the Drains of the internal power MOSFETs

5.5 V

Voltage supply for output power transistors

2

2.5

5.5 V

ORDERING INFORMATION

Part Number

CM3718IS

CM3718GIS*

*Note: G : Suffix for Pb Free Product

BLOCK DIAGRAM

Temperature Range

-40℃ to 85℃

-40℃ to 85℃

Package

8-Pin PSOP (PS08)

8-Pin PSOP (PS08)

VIN1

SD

1

3

PVIN

8

GND 2

VREF 4

Oscillator Ramp Generator

PWM Controller

Error Amp

Thermal

Protection

MOS

7 LX

2006/10/11 Rev. 1.6

5

VFB

6

PGND

Champion Microelectronic Corporation

Page 2

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