L99DZ120 datasheet(28/161 Pages) STMICROELECTRONICS

28 / 161 page

Electrical specifications

L99DZ120

28/161

DS11567 Rev 5

Figure 8. Voltage regulator V1 characteristics (quiescent current and accuracy)

ICMP_hys

Current comp.

Hysteresis

1.2

IPeak_ris(2)

Current comp. rising

thresh.

Rising current

IPeak_fal(2)

Current comp. falling

threshold

Falling current

IPeak_hys(2)

Current comp.

Hysteresis

2mA

V1fail

V1 fail threshold

V1 forced

tV1fail

V1 fail filter time

µs

tV1short

V1 short filter time

tV1FS

V1 Fail-Safe Filter Time

tV1off

V1 deactivation time

after 8 consecutive WD

failures

Tested by scan

150

200

250

1. Nominal capacitor value required for stability of the regulator. Tested with 220 nF ceramic (+/- 20%). Capacitor must be

located close to the regulator output pin. A 2.2 µF capacitor is recommended to minimize the DPI stress in the application.

2. In Active mode, V1 regulator is switched to high accuracy mode, dropping below the ICMP threshold regulator switches to

low accuracy mode.

Table 10. Voltage regulator V1 (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

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