Table 11. Thermal warning and protection

Item

Pin

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

A.049

TW

VTw_low

Thermal warning

output low voltage

Rext ≥ 4.7 kΩ to VO,

VO = 3.3 V; 5 V

0.2 x VO

V

A.050

TW

Twarn

Thermal warning

temperature

140

150

165

°C

A.051

TW

Twarn_hyst

Thermal warning

hysteresis

3

11

15

°C

A.052

VO

OV

VO overvoltage

VS = 5 V; 13.5 V,

VO increasing,

VO = 3.3 V; 5 V

6.5%

10%

13.5%

Above VO

A.056

VO

OV_hyst

VO overvoltage

hysteresis

VS = 5 V; 13.5 V,

VO decreasing,

VO = 3.3 V; 5 V

2%

Below OV

A.054

TW

Tw_per

Thermal warning

square wave period

VS = 5 V; 13.5 V,

VO = 3.3 V; 5 V

160(1)

250

335

µs

1. Tw_per = 130 µs for VS < 3.5 V.

Note:

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

L99VR02J device is still operative and functional at higher temperatures (up to 175 °C). Parameters limit at

junction temperature above 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.

L99VR02J

Electrical characteristics

DS14076 - Rev 1

page 11/38