L99VR02XP datasheet(12/50 Pages) STMICROELECTRONICS

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Table 7. Fast output discharge characteristics

Item

Symbol

Parameter

Test condition

Min Typ Max Unit

A.024

VO_LDO1,2

RFD

Fast discharge, pull-down resistor

VS_LDO1,2 = 3.95 V; 13.5 V

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

EN_LDO1,2 = Low

120

Ω

Table 8. Reset characteristics

Item

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

A.025

RST_LDO1,2

Vrstl_LDO1,2

Reset output low

voltage

Vs = 5 V; 13.5 V

Rext ≥ 4.7 kΩ to VO_LDO1,2

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

0.2xVO

A.026

RST_LDO1,2

Irst_lkg_LDO1,2

Reset output

high leakage

current

Vrs_LDO1,2t = 0.8 V

µA

A.028

RST_LDO1,2

VO_th_LDO1,2

VO out of

regulation, low

threshold

VS_LDO1,2 = 5 V

13.5 V decreasing

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

13.5% 10%

6.5%

Below

VO_LDO1,2

A.064

RST_LDO1,2

VO_th_hyst_LDO1,2

VO out of

regulation – low

threshold

hysteresis

VS_LDO1,2 = 5 V;

13.5 VO increasing

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

VO_th_LDO1,2

A.031

Icr_LDO1,2

Charge current

VS_LDO1,2 = 5 V; 13.5 V

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

µA

A.033 RST_LDO1,2

Trr

Reset reaction

time

VS_LDO1,2 = 5 V; 13.5 V

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

µs

A.034

RST_LDO1,2

Trd

Reset delay time

VS_LDO1,2 = 5 V; 13.5 V

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

Without external capacitor

µs

A.061

Trd

VS_LDO1,2 = 5 V; 13.5 V

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

Ctr1,2 = 3.5 nF

320(1) 500

620

1. Trd= 240 µs for Vs < 3.5 V.

Table 9. Watchdog characteristics

Item

Symbol

Parameter

Test condition

Min

Typ

Item

Unit

A.035

Wi_LDO1,2

Vih_LDO1,2

Input high

voltage(1)

VS_LDO1,2 = 5 V; 13.5 V

VO_LDO1,2 = 3.3 V

VO_LDO1,2 = 5 V

0.7x

VO_LDO1,2

L99VR02XP

Electrical specifications

DS14686 - Rev 1

page 12/50

L99VR02XP Datasheet(PDF) 12 Page - STMicroelectronics

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