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PDF ( 数据手册 , 数据表 ) L9348

零件编号 L9348
描述 QUAD LOW SIDE DRIVER
制造商 STMicroelectronics
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L9348 数据手册, 描述, 功能
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 0.2, 2 X 0.35(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
VS Voltage Regulator
+
VREG
VDD
VCC
=
IN1
ST1
IN2
ST2
ENA
C 166kHz
VDD
EN
FAIL
OL
VREG
SCP
TSD
GL
VS
1
Q1
EN
PGND1
PWRES
C 166kHz
PWRES
EN
EN
VDD
PWRES
PWRES
CHANNEL1
CHANNEL2
Q2
PGND2
VS
C 166kHz
5A - DRIVER
IN3
ST3
IN4
ST4
99AT0073
March 2002
C 166kHz
VDD
EN
VREG
PWRES
C 166kHz
PWRES
FAIL
OL
TSD
FB
EN
SCP
GL
GND
VS
1
D3
Q3
EN
PGND3
CHANNEL3
CHANNEL4
D4
Q4
PGND4
3A - DRIVER
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L9348 pdf, 数据表
L9348
2.0 TIMING DIAGRAMS
Figure 3. Output slope with Resistive Load
VIN
VQ
100% V Q
85% V Q
tON tf
15% V Q
99AT0061
note: parameters are not shown proportionally
Figure 4. Diagnostic Output at PWM operation
VIN
IQ
IQU
99AT0063
VST
tD
note: parameters are not shown proportionally
tOFF tr
t
t
t
t
tD t
delayed status signal
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