CM3708 Ver la hoja de datos (PDF) - Unspecified

Número de pieza

componentes Descripción

Lista de partido

CM3708

3A LOW-NOISE PWM STEP-DOWN REGULATOR

Unspecified 

PIN DESCRIPTION

CM3708

3A LOW-NOISE PWM STEP-DOWN REGULATOR

Pin No.

Symbol

1,16 VIN1, VIN2

2,15 PVIN1, PVIN2

3,14 LX1, LX2

4,13

5,9,12

8

6

PGND1, PGND2

AGND

AGSEN

SD

7

VREF

10 NC

11 VFB

Description

Min.

Operating Rating

Typ.

Max.

Unit

Voltage supply for internal circuits

2

2.5

5

V

Voltage supply for output power transistors

2

2.5

5

V

Inductor connection to the Drains of the internal

5

V

power MOSFETs

Ground for output power transistors

Ground for internal reference voltage divider

Ground for remote sensing

Shutdown active high. CMOS input level

0.75 x

VIN +

V

VIN

0.3V

VOUT Set Voltage

No Connection

1.1

VIN

V

Feedback node for the VOUT

5

V

BLOCK DIAGRAM

NC

VIN1

VIN2

SD

10

1

16

6

PVIN1 PVIN2

2

15

AGND

5

AGND

9

AGND 12

VREF

7

Oscillator Ramp Generator

PWM Controller

Error Amp

Thermal

Protection

MOS

3 LX1

14 LX2

8

AGSEN

11

VFB

4

PGND1

13

PGND2

2004/09/15 Rev. 1.2

Champion Microelectronic Corporation

Page 2

Share Link: