L99VR01STR datasheet(12/47 Pages) STMICROELECTRONICS

12 / 47 page

Table 11. Thermal warning and protection (only for L99VR01J)

Item

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

A.049

VTw_low

Thermal warning output

low voltage

Rext ≥ 4.7 kΩ to VO

VO=3.3 V; VO=5 V

0.2xVo

A.050

Twarn

Thermal warning

temperature

140

150

165

°C

A.051

Twarn_hyst

Thermal warning

hysteresis

°C

A.052

VO overvoltage

VS = 5 V; 13.5 V; VO

increasing

VO=3.3 V; VO=5 V

6.5%

10%

13.5%

Above

A.056

OV__hyst

VO overvoltage

hysteresis

VS = 5 V; 13.5 V; Vo

decreasing

V O=3.3 V; VO=5 V

Below

A.054

Tw_per

Thermal warning square

wave period

VS = 5V; 13.5 V

VO=3.3 V; VO=5 V

160(1)

250

335

µs

1. Tw_per = 130 µs for Vs < 3.5V.

Note:

all parameters are guaranteed in the junction temperature range -40°C to 150°C (unless otherwise specified);

L99VR01J device is still operative and functional at higher temperatures (up to 175°C). Parameters limit

at higher junction temperature than 150°C may change respect to what is specified as per the standard

temperature range. device functionality at high junction temperature is guaranteed by characterization.

All parameters are guaranteed by design for Vo not reported in test condition.

Note:

minimum input voltage values are achievable adopting an input ceramic capacitator: C5750X7R2A475M230KA

– ceramic capacitor multistrate SMD, 4.7 μF, 100 V, ±20%, X7R, C series TDK.

L99VR01

Electrical characteristics

DS13649 - Rev 3

page 12/47

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