ST L9386 User Manual
July 2008 Rev 3 1/14
14
L9386
Dual intelligent power low side switch
Features
■ Multipower BCD technology
■ Dual power low side driver with 2 x 5 A
■ Low R
DSON
typically 200 mΩ @ T
J
= 25 °C
■ Internal output clamping diodes V
FB
= 50 V for
inductive recirculation
■ Limited output voltage slew rate for low EMI
■ µP compatible enable and input
■ Wide operating supply voltage range 4.5 V to
45 V
■ Real time diagnostic functions:
– Output shorted to GND
– Output shorted to V
SS
– Open load
– Load bypass
– Over temperature
■ Device protection functions:
– Overload disable
– Reverse battery up to -16 V @ V
S
– Thermal shutdown
Description
The L9386 is a monolithic integrated dual low side
driver realized in an advanced Multipower BCD
mixed technology.
It is especially intended to drive valves in
automotive environment. Its inputs are µP
compatible for easy driving. Particular care has
been taken to protect the device against failures,
to avoid electro-magnetic interferences and to
offer extensive real time diagnostic.
SO20
Table 1. Device summary
Part number Order code Package Packing
L9386 L9386MD SO20 (12+4+4) Tube
www.st.com
Contents L9386
2/14
Contents
1 Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
L9386 Block and pins connection diagrams
3/14
1 Block and pins connection diagrams
Figure 1. Block diagram
Figure 2. Pins connection (top view)
OUT1
OUT2
VS
Channel 2
Output
Control
Overtemp
R
QS
Overload
Openload
GND
DIAG2
IN2
EN
IN1
R
O
Delay
Timer
Diagnostic
Control
Channel 1
DIAG1
IN1
OUT2
GND
GND
GND
GND
N.C.
EN
VS
GND
GND
GND
GND
N.C.
DIAG1
IN2
OUT1
N.C.
N.C.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DIAG2
Electrical specifications L9386
4/14
2 Electrical specifications
2.1 Absolute maximum ratings
2.2 Thermal data
Table 2. Absolute maximum ratings (no damage or latch)
Symbol Parameter Value Unit
V
SDC
DC supply voltage -16 to 45 V
V
STR
Transient supply voltage (t ≤ 500 ms) 60 V
V
IN
,EN Input voltage (| ≤ | 10 mA |) -1.5 to 6 V
V
DDC
Diagnostic DC output voltage (| ≤ | 50 mA |) -0.3 to 16 V
V
ODC
DC output voltage 45 V
V
OTR
Transient output voltage (R
L
≥ 4 Ω) 60 V
I
O
Output load current internal limited
I
OR
Reverse output current limited by load -4 A
EO
Switch-off energy for inductive loads
(t
EO
= 250 µs, T = 5 ms)
50 mJ
T
jEO
Junction temperature during switch-off Σt = 30 min 175 °C
T
j
Junction temperature -40 to +150 °C
T
stg
Storage temperature -55 to +150 °C
Table 3. Thermal data
Symbol Parameter Value Unit
T
jDIS
Thermal disable junction temperature threshold 160 to 190 °C
R
th j-pins
Thermal resistance junction to pins 14 °C/W
L9386 Electrical specifications
5/14
2.3 Electrical characteristics
Table 4. Electrical characteristics
(The electrical characteristics are valid within the below defined operative range, unless
otherwise specified.)
Symbol Parameter Test condition Min. Typ. Max. Unit
V
S
Board supply voltage 4.5 12 32 V
V
D
Stabilized diagnostic output
voltage
-0.3 5 16 V
T
j
Junction temperature -40 150 °C
IS
SB
Static standby supply current
(1)
(2)
V
EN
= L, VO ≤ VO
uv
0.73 1.5
15
mA
IS DC supply current
(1)
(2)
V
EN
= V
IN
= H
1.3
5
15
mA
VD
L
Diagnostic output low voltage
(1)
I
D
= 2 mA
(2)
I
D
= 1 mA
0.35 0.5 V
ID
LE
Diagnostic output leakage
current
V
S
= 0 V or V
S
= open;
V
D
= 5.5 V T
j
≤ 125 °C
0.1 2 mA
ID
Diagnostic output current
capability
V
D
≤ 16 V DIAG = L 2 6 30
mA
VO
UV
Open load voltage threshold V
EN
= X, V
IN
= L
0.51
xVS
0.55
xVS
0.59
xVS
V
ΔVO
UV1,2
Open load difference voltage
threshold
(1)
V
EN
= X, V
IN1,2
= L
V
S
≥ VO
C
≥ VO
UV
VO
C
= output voltage of other
channel
(2)
VO
C
-
0.9V
VO
C
-
0.7V
VO
C
-
1.25V
VO
C
-
1.25V
VO
C
-
1.6V
VO
C
-
1.8V
V
IO
UC
Open load current threshold
(3)
V
EN
= V
IN
= H
(2)
100
20
320 480
mA
IO
OC
Over load current threshold b) 5 7 A
V
OCL
Output voltage during clamping IO
CL
≥ 100mA 45 52 60 V
S
ON,OFF
Output (fall, rise) slew rate
(3)
see Figure 4 200 1500 3200 V/ms
R
IO
Internal output pull down
resistor
V
EN
= L 10 20 40 KΩ
R
DSON
Output on resistance
V
S
> 9.5 V I
O
= 2 A
T
j
= 25 °C
T
j
= 150 °C
200 300
500
mΩ
V
(EN,IN)L
Logic input low voltage
|I
EN
, I
N
| ≤ 10 mA
(1)
(2)
-1.5
-1.5
1
0.5
V
V
(EN,IN)H
Logic input high voltage 2.2 5.5 V
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