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L9177ATR Datasheet(PDF) 3 Page - STMicroelectronics

Part # L9177ATR
Description  Automotive engine management control IC for small engines
PDF  55 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9177ATR Datasheet(HTML) 3 Page - STMicroelectronics

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1
Block diagram and pin description
1.1
Block diagram
Figure 1. Block diagram
INJ2
GND_P_2
GND_P_1
L
TACH
OUTD
OUTC
GND_INJ2
GND O2H
GND_INJ1
REL3
REL2
REL1
O2H
OUTB
OUTA
INJ1
IN2
VB
KEY
IN1
VROUT
VRIN-
VRIN+
KL_RX
KL_TX
IN_REL2
IN_REL1
ILS_TACH
EN
REXT
PWM
RESET
SCK
/CS
SO
SI
DIR
VB_1
INO2H
RESET
Operating mode
Standby mode
5V regulator 300mA
Generator
Reference
Current
Interface
Sensor
Reluctance
Variable
HS switch 100mA
5V st-by V reg2.5mA
40mA
5V tracking Vreg
VDD
VDD_TRK
VDD_SB
HS_OUT
STEPPER MOTOR DRIVER
CURRENT LIMITED LOW SIDE DRIVER
RELAY DRIVER (3 CHANNELS)
O2 SENSOR HEATER
TACHOMETER DRIVER
INJECTOR DRIVER (2 CHANNEL)
Short to GND/VB
Over-current
Open Load
Diagnosis
Short to GND
Over-current
Open Load
Diagnosis
Short to GND
Over-current
Open Load
Diagnosis
Short to GND
Over-current
Open Load
Diagnosis
Short to GND
Over-current
Open Load
Diagnosis
Short to GND
Over-current
Open Load
Diagnosis
RON 2.6 ohm
Over-current>0.7A
RON 1.5 ohm
45V Clamp
(2A in-rush)
Over-current>1.2A
RON 0.5 ohm
45V Clamp
Over-current>1.2A
RON 0.5 ohm
60V Clamp
Over-current>4A
RON 5 ohm
Over-current>0.1A
RON 0.5 ohm
60V Clamp
Over-current>2.8A
KL_LINE
K-LINE
GND_A/GND_P
GAPGPS00585
L9177A
Block diagram and pin description
DS12175 - Rev 5
page 3/55



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