L9662 datasheet(12/80 Pages) STMICROELECTRONICS

12 / 80 page

Electrical specifications

L9662

12/80

DocID028325 Rev 1

2.3

Operating ratings

2.4

Electrical characteristics

2.4.1

General

4.9 V ≤ VDD  5.1 V; 7 V ≤ VRESX ≤ 37 V; 7 V ≤ VSDIAG ≤ 37 V; (VSATS + 6.5 V) ≤ VSYNC ≤

25 V; 5 V ≤ VSATS ≤ 14 V; FEN1 = FEN2 = FEN3 = FEN4 = VDD; R_REF = 10 kΩ, ±1%,

100 PPM; -40 °C ≤ TA ≤ +95 °C; unless other specified.

Table 5. Operating ratings

Symbol

Parameter

Value

Unit

VDD

Supply voltage

4.9 to 5.1

VSDIAG

Supply voltage for squib diagnostics

7 to 37

VSATS

Satellite supply voltage

7 to 14

VSYNC

Sync supply voltage (1))

Continuous

(VSATS + 6) to 25

pulse ≤500 ms

(VSATS + 6) to 40

VRESx

VRES voltage (VRES0, VRES1, VRES2, VRES3, VRES4,

VRES5, VRES6, VRES7)

7 to 37

Discrete input voltage (RESETB, DEPEN, CS_D, CS_S,

SCLK, SCLK_S, MOSI, MOSI_S, MISO, MISO_S, FEN1,

FEN2, FEN3, FEN4, INITSYNC, IREF)

- 0.3 to (VDD +0.3)

Tamb

Ambient temperature

-40 to 95

°C

RTh j-amb

Thermal resistance junction-to-ambient

°C/W

1. For PSI5 the maximum operating voltage is 16.5V as called out in the PSI5 technical specification (V 1.2 /14.06.07).

Depending on the sync supply voltage the sync pulse can be as high as 8 V above idle. To ensure the maximum operating

voltage of 16.5 V is not exceeded then the VSATS voltage should be limited to 8.5 V.

Table 6. General - DC electrical characteristics

Symbol

Parameter

Test condition

Min.

Typ.

Max.

Unit

Osc

Internal oscillator

frequency

Tested with 10K, 1%, 100ppm Iref

resistor

4.75

5.25

MHz

VRST1

Internal voltage reset VDD

after de-glitch time (tpor)

See Figure 6

VDD level for device to report reset

condition -deployment drivers are

disabled

Guaranteed by design

4.0

4.5

VRST2

Internal voltage reset VDD

with no de-glitch time See

2.1

3.0

tPOR

POR De-glitch timer

Timer for VRST1

μs

IDD

Input current VDD

No squib diagnostics. No deployment.

Satellite channels disabled.

Resistance measurement

diagnostics with no fault condition

present. Satellite channels disabled.

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