L9177 datasheet(11/49 Pages) STMICROELECTRONICS

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L9177

Electrical specifications

KEY pin

To be protected with Rkey_ext to

limit sourced/sinked current to

± 5 mA in dc conditions and ±20 mA

during transients

(ISO-pulses on battery line)

-0.3

VRIN- / VRIN+

Max current |20 mA| to be limited

with external resistors

-0.3

Vdd + 0.3

VDD_TRK pin

-2

KL_LINE pin

-16

Maximum voltage shift

between GND pins

PIN GND, GND_O2H, GND_P_1,2,

GND_INJ1,2, GNDA, GNDP

-0.3

0.3

I/O power pins(3)

maximum energy (single

pulse, max. current)

Injector drivers

O2 sensor heater

Relay/lamp drivers

I/O power pins(3)

maximum energy

(continuous pulse, max.

current, 36 million pulses

with T = 100 ms)

Injector drivers

O2 sensor heater

Relay/lamp drivers

Reverse current through

O2H output without

supply voltage(4)

Static (room temperature, max

reverse diode voltage 1.5 V)

2.5

Dynamic (guarantee by iso-pulse

test immunity on application board)

Reverse current through

INJx outputs without

supply voltage(4)

Static (room temperature, max

reverse diode voltage 1.5 V)

2.2

Dynamic (guarantee by iso-pulse

test immunity on application board)

Reverse current through

LAMP output without

supply voltage(4)

Static (room temperature, max

reverse diode voltage 1.5v)

1.2

Dynamic (guarantee by iso-pulse

test immunity on application board)

Reverse current through

RLYx outputs without

supply voltage(4)

Static (room temperature, max

reverse diode voltage 1.5 V)

1.5

Dynamic (guarantee by iso-pulse

test immunity on application board)

Reverse current through

TACH output without

supply voltage(4)

Static (room temperature, max

reverse diode voltage 1.5 V)

0.5

Dynamic (guarantee by iso-pulse

test immunity on application board)

1. Pins are VDD, VDD_SB, REXT, DIR

2. Pins are CS, SCK, SI, SO, VROUT, RESET, PWM, EN, INO2H, ILS_TACH, IN, KL_TX, KL_RX

3. Pins are O2H, LAMP, INJ1-2, REL1-2-3

4. Reverse battery connection, parameter not tested for info only

Table 4. Absolute maximum ratings (continued)

Parameter

Condition

Min

Max

Unit

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