VIPER20ADIP-E datasheet(6/34 Pages) STMICROELECTRONICS

6 / 34 page

Electrical data

VIPer20A-E

6/34

Table 5.

Error amplifier section

Table 6.

PWM comparator section

Table 7.

Shutdown and overtemperature section

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

VDDREG

VDD Regulation Point

ICOMP=0mA (see Figure 5)

12.6

13.4

∆VDDreg Total Variation

TJ = 0 to 100°C

GBW

Unity Gain Bandwidth

From Input =VDD to

Output = VCOMP

COMP pin is open

Figure 15

150

KHz

AVOL

Open Loop Voltage Gain

COMP pin is open

Figure 15

DC Transconductance

VCOMP=2.5V(see Figure 5)

1.1

1.5

1.9

mA/V

VCOMPLO Output Low Level

ICOMP=-400µA; VDD=14V

0.2

VCOMPHI Output High Level

ICOMP=400µA; VDD=12V

4.5

ICOMPLO Output Low Current Capability VCOMP=2.5V; VDD=14V

-600

µA

ICOMPHI

Output High Current

Capability

VCOMP=2.5V; VDD=12V

600

µA

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

HID

∆VCOMP / ∆IDPEAK

VCOMP = 1 to 3 V

4.267.8

V/A

VCOMPoff

VCOMP Offset

IDPEAK = 10mA

0.5

IDpeak

Peak Current Limitation

VDD = 12V; COMP pin open

0.50.670.9

Current Sense Delay to Turn-

Off

ID = 1A

250

Blanking Time

250

360

ton(min)

Minimum On Time

350

1200

Symbol

Parameter

Test conditions

Min

Typ

Max

Unit

VCOMPth

Restart Threshold

(see Figure 8)

0.5

tDISsu

Disable Set Up Time

(see Figure 8)

1.7

µs

Ttsd

Thermal Shutdown

Temperature

(see Figure 8)

140

170

190

°C

Thyst

Thermal Shutdown Hysteresis (see Figure 8)

°C

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