VN21 datasheet(5/13 Pages) STMICROELECTRONICS

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VN21

ELECTRICAL CHARACTERISTICS (cont’d)

Table 8. Protections and Diagnostics

Note: 6. IOL(off) = (VCC -VOL)/ROL (see figure 5).

7. t1(on): minimum open load duration which activates the status output;

t1(off): minimum load recovery time which desactivates the status output;

t2(off): minimum on time after thermal shut down which desactivates status output;

tpovl tpol: ISO definition (see figure 6).

Figure 5. Note 6 relevant figure

Figure 6. Note 7 relevant figure

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VSTAT

Status Voltage Output Low

ISTAT = 1.6 mA

0.4

VUSD

Under Voltage Shut Down

VSCL

Status Clamp Voltage

ISTAT = 10 mA

ISTAT = –10 mA

–0.7

IOV

Over Current

RLOAD < 10 mΩ; –40 ≤ Tc ≤ 125 °C

140

IAV

Average Current in Short Circuit

RLOAD < 10 mΩ; Tc = 85 °C

2.5

IOL

Open Load Current Level

300

700

TTSD

Thermal Shut-down Temperature

140

°C

Reset Temperature

125

°C

VOL

(6)

Open Load Voltage Level

Off-State

2.5

3.75

t1(on)

(7)

Open Load Filtering Time

t1(off)

(7)

Open Load Filtering Time

t2(off)

(7)

Open Load Filtering Time

tpovl

(7)

Status Delay

µs

tpol

(7)

Status Delay

700

µs

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