L9348 Datasheet, PDF (1/13 Pages) STMicroelectronics – QUAD LOW SIDE DRIVER

L9348
QUAD LOW SIDE DRIVER
s SUPPLY VOLTAGE RANGE: 4.8 TO 18V
s OUTPUT VOLTAGE UP TO 40V
s OUTPUT VOLTAGE CLAMP DURING
RECIRCULATION OF INDUCTIVE LOADS
s OUTPUT CURRENT CAPABILITY 2 X 5A AND
2 X 3A
s LOW POWER DISSIPATION DURING
RECIRCULATION OF INDUCTIVE LOADS BY
INTEGRATED FREE WHEELING DIODES
(3A-DRIVERS ONLY)
s LOW ON-RESISTANCE 2 X 0.2Ω , 2 X 0.35Ω (TYP.)
s OUTPUT SHORT CIRCUIT CURRENT
PROTECTION
s REAL TIME DIAGNOSTIC FUNCTIONS
s OVERTEMPERATURE SHUTDOWN
s SIGNAL- AND POWER-GROUND-LOSS
SHUTDOWN
PowerSO-36
BARE DIE
ORDERING NUMBERS:
L9348
L9348-DIE1
s 3.3V CMOS COMPATIBLE INPUTS AND
STATUS
DESCRIPTION
The L9348 is a monolithic integrated quad low side
driver realized in advanced Multipower-BCD technol-
ogy. It is intended to drive inductive loads (relays,
electromagnetic valves) in automotive and industrial
applications.
Figure 1. Block Diagram
VS
V_S
Voltage Regulator
+
VREG
–
=
V_DD
V_CC
IN1
ST1
IN2
ST2
ENA
C 166kHz
EN
V_DD
FAIL
OL
V_REG
SCP
TSD
GL
V_S
≥1
Q1
EN
PGND1
PWRES
C 166kHz
PWRES
EN
EN
V_DD
PWRES
PWRES
CHANNEL1
CHANNEL2
Q2
PGND2
V_S
C 166kHz
5A - DRIVER
IN3
ST3
IN4
ST4
99AT0073
March 2002
C 166kHz
EN
V_DD
V_REG
PWRES
C 166kHz
PWRES
FAIL
OL
TSD
FB
EN
SCP
GL
GND
V_S
≥1
D3
Q3
EN
PGND3
CHANNEL3
CHANNEL4
D4
Q4
PGND4
3A - DRIVER
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