VIPER20BSP View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

VIPER20BSP

SMPS PRIMARY I.C.

STMicroelectronics 

VIPer20B / VIPer20BSP

ELECTRICAL CHARACTERISTICS (continued)

ERROR AMPLIFIER SECTION

S ymb ol

VDDreg

∆VDDreg

GBW

P a ra m et er

VDD Regulation Point

Total Variation

Unity Gain Bandwidth

A VOL

Gm

V COMPL O

V C OM PHI

ICOMPLO

I CO MP HI

Open Loop Voltage

Gain

DC Transconductance

Output Low Level

Output High Level

Output Low Current

Capability

Output High Current

Capability

Test Conditions

ICOMP = 0 mA (see fig.1)

TJ = 0 to 100 oC

From Input = VDD t o Out put = VCOMP

CO MP pin is open (see fig. 8)

CO MP pin is open (see fig. 8)

VCOMP = 2.5 V (see fig. 1)

ICOMP = -400 µA

VDD = 14 V

ICOMP = 400 µA

VDD = 12 V

VCOMP = 2.5 V

VDD = 14 V

VCOMP = 2.5 V

VDD = 12 V

Min.

12.6

TBD

TBD

Typ .

13

2

150

50

1.5

0.2

4.5

-600

600

Max.

13.4

Unit

V

%

KHz

dB

TBD

mA/V

V

V

µA

µA

PWM COMPARATOR SECTION

S ymb ol

HID

VCOMPo f f

IDpeak

td

tb

P a ra m et er

Test Conditions

∆VCOMP /∆IDpea k

VCOMP offset

VCOMP = 1 t o 3 V

IDpeak = 10 mA

Peak Current Limitation VDD = 12 V COMP pin open

Current Sense Delay

to turn-off

ID = 0.4 A

Blanking Time

Min.

TBD

1.3

Typ .

2.3

0.5

250

Max.

TBD

TBD

Unit

V/A

V

A

ns

300

ns

SHUTDOWN AND OVERTEMPERATURE SECTION

S ymb ol

V COMP th

tDI Ss u

Ttsd

Thyst

P a ra m et er

Restart threshold

Disable Set Up Time

Thermal Shutdown

Temperature

Thermal Shutdown

Hy s t e r es is

Test Conditions

(see fig. 4)

(see fig. 4)

(see fig. 6)

(see fig. 6)

Min.

140

Typ .

0.5

1.7

160

Max.

5

Unit

V

µs

oC

34

oC

5/17

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