VIPER318HDTR datasheet(7/40 Pages) STMICROELECTRONICS

7 / 40 page

Table 7. Controller section

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

E/A

VFB_REF

Reference voltage

1.175

1.2

1.225

VFB_DIS

E/A disable voltage

150

180

210

IFB_PULL UP

Pull-up current

0.9

1.1

µA

Trans conductance

VCOMP=1.5 V,

VFB >VFBREF

400

550

700

µA/V

ICOMP1

Max. source current

VCOMP=1.5 V,

VFB =0.5 V

100

125

µA

ICOMP2

Max. sink current

VFB=2 V,

VCOMP=1.5 V

100

125

µA

RCOMP(DYN)

Dynamic resistance

VCOMP=2.7 V,

VFB =GND

kΩ

VCOMPH

Current limitation threshold

2.75

3.1

3.45

VCOMPL

PFM threshold

0.6

0.8

HCOMP

ΔVCOMP/ΔIDRAIN

VIPER317*

3.8

4.2

4,6

VIPER318*

3.2

3.5

3.8

V/A

VIPER319*

2.9

3.2

3.5

OLP and timing

IDLIM

Drain current limitation

TJ= 25°C , VIPER317*

675

710

745

TJ= 25°C , VIPER318*

810

850

890

TJ= 25°C , VIPER319*

940

990

1040

VIPER317*(1)

639

710

781

VIPER318*(1)

765

850

935

VIPER319*(1)

891

990

1089

I2f

Power coefficient

IDLIM_TYP2 x FOSC_TYP

VIPER317L

-10%

30.2

+10%

A2·kHz

VIPER317H

66.5

VIPER318X

21.7

VIPER318L

43.4

VIPER318H

95.4

VIPER319X

29.4

VIPER319L

58.8

VIPER319H

129.4

IDlim_PFM

Drain current limitation at light load

TJ=25°C, VCOMP=VCOMPL(2)

VIPER317* (1)

110

140

TJ=25°C, VCOMP=VCOMPL(2)

VIPER318*(1)

100

130

160

TJ=25°C, VCOMP=VCOMPL(2)

VIPER319*(1)

120

150

180

VIPER31

Electrical characteristics

DS13285 - Rev 3

page 7/40

VIPER318HDTR 数据表(PDF) 7 Page - STMicroelectronics

VIPER318HDTR 数据表(HTML) 7 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

数据表下载

链接网址

VIPER318HDTR 数据表(PDF) 7 Page - STMicroelectronics

VIPER318HDTR 数据表(HTML) 7 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

数据表 下载

链接网址

数据表下载