VIPER16HDTR datasheet(7/25 Pages) STMICROELECTRONICS

7 / 25 page

VIPER16

Electrical data

Doc ID 15232 Rev 5

7/25

Table 8.

Controller section

Symbol

Parameter

Test condition

Min

Typ Max

Unit

Error amplifier

VREF_FB

FB reference voltage

3.2

3.3

3.4

IFB_PULL UP Current pull up

-1

μA

Trans conductance

mA/V

Current setting (LIM) pin

VLIM_LOW

Low level clamp voltage

ILIM = -100 μA0.5

Compensation (COMP) pin

VCOMPH

Upper saturation limit

TJ = 25 °C

VCOMPL

Burst mode threshold

TJ = 25 °C

1.1

1.2

VCOMPL_HYS Burst mode hysteresis

TJ = 25 °C

HCOMP

ΔV

COMP / ΔIDRAIN

V/A

RCOMP(DYN) Dynamic resistance

VFB = GND

kΩ

ICOMP

Source / sink current

VFB > 100 mV

150

μA

Max source current

VCOMP = GND, VFB = GND

220

μA

Current limitation

IDlim

Drain current limitation

ILIM = -10 μA, VCOMP = 3.3 V,

TJ = 25 °C

0.38

0.4

0.42

tSS

Soft-start time

8.5

TON_MIN

Minimum turn ON time

450

IDlim_bm

Burst mode current limitation

VCOMP = VCOMPL

Overload

tOVL

Overload time

tRESTART

Restart time after fault

Oscillator section

FOSC

Switching frequency

VIPer16L

kHz

VIPer16H

103

115

127

kHz

Modulation depth

FOSC = 60 kHz

±4

kHz

FOSC = 115 kHz

±8

kHz

Modulation frequency

230

DMAX

Maximum duty cycle

Thermal shutdown

TSD

Thermal shutdown temperature

150

160

°C

THYST

Thermal shutdown hysteresis

°C

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