NSC LM9011MX, LM9011M Datasheet

LM9011
Electronic Ignition Interface

General Description

The LM9011 is an interface circuit which integrates the tim­ing detection and logic control functions required for an auto­motive electronic ignition system into one device.

A VRS interface is provided for crankshaft position informa­tion via a toothed-wheel.

Four voltage comparators are provided for hardware diag­nostics.

An electronic timing interface with output fault diagnostics is
provided to enable a micro-processor to drive an external
four channel ignition spark circuit.

The LM9011 is fully specified over the automotive tempera­ture range of -40˚C to +125˚C, and is available in a 28 pin
Small Outline surface mount package.

Key Specifications
Features

n Single 5V supply operation
n VR Sensor Interface with dynamic hysteresis
n Four Channel Electronic Timing spark driver with output

diagnostics

n Electronic Timing Interface spark driver output voltage

from 5V to 16V

n One Non-Inverting voltage comparator with hysteresis
n Three Inverting voltage comparators with hysteresis

Connection Diagram

Top View

DS101264-1

Ordering Information LM9011M

See NS Package M28B

February 2000

LM9011 Electronic Ignition Interface

© 2000 National Semiconductor Corporation DS101264 www.national.com

Absolute Maximum Ratings (Note 1)

Voltage -0.3V to +7.0V
S_HI Voltage -0.3V to 26.5V
VR_HI and VR_LO Inputs +/-3mA
Comparator Inputs -0.3V to +7.0V
Timing Interface Inputs -0.3V to +7.0V
ESD Susceptibility (Note 3) +/-2000V
Maximum Junction Temperature 150˚C
Storage Temperature Range -65˚C to +150˚C
Lead Soldering Information:

Vapor Phase (60 Seconds) 215˚C
Infrared (15 Seconds) 220˚C

Operating Ratings (Note 3)

V

CC

Voltage 4.75V to 5.25V

S_HI Voltage V

CC

to 26V
Sx Outputs -0.3V to S_HI +0.3V
Comparator Inputs

VR_HI and VR_LO Inputs

-0.3V to V

CC

+0.3V

+/-2.75mA

Timing Interface Inputs -0.3V to V

CC

+0.3V

Thermal Resistances (M28B):

Junction to Case (θJ-C) 15˚C/W
Junction to Ambient (θJ-C) 69˚C/W

DC Electrical Characteristics The following specifications apply for V

CC

= 5V, V

RESET=VCC,VS_HI

=

V

CC

, -40˚C ≤ TA≤ +125˚C, Application Circuit Figure 16, unless otherwise specified.

Symbol Parameter Conditions Minimum Maximum Units

I

CC

Supply Current

RESET, IN_4 = V

CC

25 mA

ENB, D0, D1, IN_1, IN_2, IN_3 =

0V
VR_HI = +12.5µA
VR_LO = -12.5µA

Comparators

V

TH

1 Input Threshold VIN_1 Decreasing from VCCto 0V

until V

OUT

_1>VCC/2

V

CC

X 0.435 VCCX 0.485 V

V

TH

2 Input Threshold VIN_2 Decreasing from VCCto 0V

until V

OUT

_2>VCC/2

V

CC

X 0.435 VCCX 0.485 V

V

TH

3 Input Threshold VIN_3 Decreasing from VCCto 0V

until V

OUT

_3>VCC/2

V

CC

X 0.40 VCCX 0.45 V

V

TH

4 Input Threshold VIN_4 Decreasing from VCCto 0V

until V

OUT

_4<VCC/2

V

CC

X 0.45 VCCX 0.50 V

V

HYST

Input Hysteresis All Comparators 150 400 mV

I

BIAS

Input Bias Current IN_1, IN_2, IN_3 = 0V ≤ VIN≤V

CC

IN_4 = 0V ≤ VIN_4 ≤ VCC-1V

750 µA

V

OH

Output High Voltage I

LOAD

= -100µAV VCC-1 V

V

OL

Output Low Voltage I

LOAD

= +100µAV 750 mV

VR Sensor Interface

V

OH

Output High Voltage I

LOAD

= -15µA

VR_HI= -1mA, VR_LO = +1mA

VCC-1 V

V

OL

Output Low Voltage Load = +15µA

VR_HI=+1mA, VR_LO = -1mA

750 mV

I

DIFF(MIN)

Minimum Detect Differential Input

Current (Note 4)

-40˚C ≤ TA≤ +25˚C

T

A

= +85˚C (Note 7)

T

A

= +125˚C

0.5

0.6

1.0

3.0

3.5

5.0

uA Pk-Pk
uA Pk-Pk
uA Pk-Pk

I

HYS

1 Input Hysteresis (Note 4) I

DIFF

= 1mA pk-pk 75 250 uA Pk

I

HYS

2 Input Hysteresis (Note 4) I

DIFF

= 2.5mA pk-pk 185 625 uA Pk

Electronic Timing Interface

V

IH

Input Logic 1 D0, D1, ENB,
RESET

VCCX 0.7 V

V

IL

Input Logic 0 D0, D1, ENB,
RESET

VCCX 0.3 V

I

IH

Input High Current Inputs D0, D1,
RESET

VIN=V

CC

10 µA

I

IH

Input High Current Input ENB VIN=V

CC

125 µA

LM9011

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DC Electrical Characteristics The following specifications apply for V

CC

= 5V, V

RESET

=VCC,V

S_HI=VCC

,

-40˚C ≤ T

A

≤ +125˚C, Application Circuit Figure 16, unless otherwise specified. (Continued)

Symbol Parameter Conditions Minimum Maximum Units

Electronic Timing Interface

I

IL

Input Low Current Inputs D0, D1,
ENB

VIN= 0V -10 µA

I

IL

Input Low Current Input RESET VIN= 0V -125 µA

V

OH

Output High Voltage Outputs S1,

S2, S3, S4

I

LOAD

= -10mA, V

S_HI

= 5V 3.75 V

V

OL

Output Low Voltage Outputs S1,

S2, S3, S4

I

LOAD

= 1mA, V

S_ HI

= 5V 300 mV

V

OH

Output High Voltage Outputs S1,

S2, S3, S4

I

LOAD

= -10mA, V

S_HI

= 16V 14 V

V

OL

Output Low Voltage Outputs S1,

S2, S3, S4

I

LOAD

= 1mA, V

S_HI

=16V 450 mV

V

OH

Output High Voltage Outputs S1,

S2, S3, S4

I

LOAD

= -10mA, V

S_HI

=26V 22 V

V

OL

Output Low Voltage Outputs S1,

S2, S3, S4

I

LOAD

= 1mA, V

S_HI

=26V 600 mV

V

OH

FAULT Pin Output High Voltage I

FAULT

= -100µA, no fault VCC-1 V

V

OL

FAULT Pin Output Low Voltage I

FAULT

= 100µA, any fault 750 mV

V

FAULT

Fault Treshold Voltage Outputs

S1, S2, S3, S4

Sx Output Short Fault VCCX 0.2 VCCX 0.5 V

I

FOL

TRI-STATE Output Current

Outputs S1, S2, S3, S4

V

RESET

= 0V, V

S _HI

=5V

R

LOAD

= 10KΩ

-12 -50 µA

AC Electrical Characteristics

The following specifications apply for VCC= 5V, V

S_HI=VCC,VRESET=VCC

, -40˚C≤TA≤+125˚C. The AC Timing Characteristics

are not production tested. Minimum and Maximum limits are guaranteed by device characterization.

Symbol Parameter Conditions Minimum Maximum Units

Comparators

T

RISE

Output Rise Time 10%to 90%,C

LOAD

= 25pF 5 µs

T

FALL

Output Fall Time 90%to10%,C

LOAD

= 25pF 5 µs

VR Sensor Interface (Note 4)

T

RISE

Output Rise Time 10%to 90%,C

LOAD

= 100pF,

R

LOAD

= 100KΩ

10 µs

T

FALL

Output Fall Time 90%to10%,C

LOAD

= 100pF,

R

LOAD

= 100kΩ

5ms

T

DELAY

Zero Crossing Delay Time (Note6)I

DIFF

= 5µA pk-pk, F

VRS

= 200Hz

I

DIFF

= 50µA pk-pk, F

VRS

=

2.5KHz

1

10

ms
ms

F

MAX

Maximum VRS Frequency C

LOAD

= 100pF, R

LOAD

= 100KΩ

I

DIFF

= 5µA pk-pk

50 KHz

Electronic Timing Interface

T

RISE

1 Sx Output Rise Time Sx Rises10%to 90

%

C

LOAD

= 6.8nF, R

LOAD

= 10KΩ 5µs

C

LOAD

= 12.7nF, R

LOAD

= 10KΩ 8µs

T

FALL

1 Sx Output Fall Time Sx Falls 90%to 10

%

C

LOAD

= 6.8nF, R

LOAD

= 10KΩ 15 µs

C

LOAD

= 12.7nF, R

LOAD

= 10KΩ 25 µs

T

SETUP

SetupTime (Notes 7, 8 and 9) 1 µs

T

HOLD

Hold Time 0.5 µs

LM9011

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AC Electrical Characteristics (Continued)

The following specifications apply for VCC= 5V, V

S_HI=VCC,VRESET=VCC

, -40˚C≤TA≤+125˚C. The AC Timing Characteristics

are not production tested. Minimum and Maximum limits are guaranteed by device characterization.

Symbol Parameter Conditions Minimum Maximum Units

Electronic Timing Interface

T

DF

1 Fault Delay Time Sx Output Short to Ground Fault

From ENB=1toFAULT ≤ 10

%

C

FAULT

= 25pF 2 µs

T

DF

2 Fault Delay Time Sx Output Short to Battery Fault

From ENB=0toFAULT ≤ 10

%

C

FAULT

= 25pF 2 µs

T

TRI

TRI-STATE Delay Time From RESET=0toAllSx

Outputs Off

2µs

T

RISE

2 Fault Pin Rise Time 10%to 90%,C

FAULT

= 25pF 5 µs

T

FF(OFF)

False Fault Time From ENB=0toFAULT ≥ 90

%

C

FAULT

= 25pF

C

LOAD

= 6.8nF, R

LOAD

= 10KΩ 25 µs

C

LOAD

= 12.7nF, R

LOAD

= 10KΩ 30 µs

T

FF(ON)

False Fault Time From ENB=1toFAULT ≥ 90

%

C

FAULT

= 25pF

C

LOAD

= 6.8nF, R

LOAD

= 10KΩ 8µs

C

LOAD

= 12.7, R

LOAD

= 10KΩ 10 µs

T

UDF

Undefined Fault Time From ENB = 0 for 8uSec, to Valid

FAULT

C

LOAD

= 6.8nF, R

LOAD

= 10KΩ 20 µs

C

LOAD

= 12.7nF, R

LOAD

= 10KΩ 25 µs

Note 1: Absolute Maximum Ratings indicate the limits beyond which damage may occur.
Note 2: ESD Ratings is with Human Body Model: 100pF discharged through a 1500Ω resistor.
Note 3: Operating ratings indicateconditions for which the device is intended to be functional, but may not meet the guaranteed specificperformance limits. For guar-

anteed specifications and conditions, see the Electrical Characteristics.

Note 4: Tested per VR Sensor Interface test circuit. See figures 8 and 9.
Note 5: Minimum Detect Current is not production tested at +85C. Specifications is guaranteed through device characterization and Test Limits at 25˚C and 125˚C.
Note 6: VR Sensor Interface Tdelay, measured from VR input sine wave zero-crossing to VR_OUT going high. See figure 9.
Note 7: Electronic Timing Interface Tsetup, minimum time between Vcc

>

4.75V and RESET = 1.

Note 8: Electronic Timing Interface Tsetup, minimum time between RESET = 1 and D0 = 1.
Note 9: Electronic Timing Interface Tsetup, minimum time between D0 / D1 = valid and ENB = 1.

LM9011

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Typical Performance Characteristics

Supply Current vs Temperature

DS101264-3

Ifol Source Current vs Temperature

DS101264-4

VFault Threshold vs Temperature

DS101264-5

Sx Source Current vs S_HI Voltage

DS101264-6

Sx Sink Current vs S_HI Voltage

DS101264-7

Sx Vol vs Sx Sink Current

DS101264-8

LM9011

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