BTS409L1
Smart Highside Power Switch
•
Overload protection
•
Current limitation
•
Short circuit protection
•
Thermal shutdown
•
Overvoltage protection (including load dump)
•
Fast demagnetization of inductive loads
•
Reverse battery protection
1)
•
Undervoltage and overvoltage shutdown with
auto-restart and hysteresis
•
Open drain diagnostic output
•
Open load detection in ON-state
•
CMOS compatible input
•
Loss of ground and loss of
V
bb
protection
•
Electrostatic discharge
(ESD) protection
Features
Product Summary
Overvoltage protection
Operating voltage
On-state resistance
Load current (ISO)
Current limitation
V
bb(AZ)
V
bb(on)
R
ON
I
L(ISO)
I
L(SCr)
43
V
5.0 ... 34 V
200 mΩ
2.3
A
4
A
TO-220AB/5
5
1
Straight leads
5
1
5
Application
Standard
SMD
• µC
compatible power switch with diagnostic
feedback for 12 V and 24 V DC grounded loads
•
All types of resistive, inductive and capacitve loads
•
Replaces electromechanical relays, fuses and discrete circuits
General Description
N channel vertical power FET with charge pump, ground referenced CMOS compatible input and diagnostic
feedback, monolithically integrated in Smart SIPMOS technology. Providing embedded protective functions.
+ V bb
3
Voltag
source
V
Logic
Voltag
sensor
Overvoltag
protectio
Curren
limit
Gate
protectio
OUT
Charge
Level
f
Rectifier
Limit for
unclampe
ind.
Open
Short to
detectio
2
IN
Temperatur
sensor
5
ESD
Logic
Load
R
4
ST
O
GND
PROFET
GND
1
Signal GND
Load GND
1
)
With external current limit (e.g. resistor R
GND
=150
Ω)
in GND connection, resistor in series with ST
connection, reverse load current limited by connected load.
Infineon Technologies AG
1
2003-Oct-01
BTS409L1
Pin
1
2
3
4
5
Symbol
GND
IN
Vbb
ST
OUT
(Load, L)
-
I
+
S
O
Function
Logic ground
Input, activates the power switch in case of logical high signal
Positive power supply voltage,
the tab is shorted to this pin
Diagnostic feedback, low on failure
Output to the load
Maximum Ratings
at
T
j
= 25 °C unless otherwise specified
Parameter
Supply voltage (overvoltage protection see page 3)
Supply voltage for full short circuit protection
T
j Start
=-40 ...+150°C
Load dump protection
2
)
V
LoadDump
=
U
A
+
V
s
,
U
A
= 13.5 V
R
I
3
)
= 2
Ω,
R
L
= 5.3
Ω,
t
d
= 200 ms, IN= low or high
Load current (Short circuit current, see page 4)
Operating temperature range
Storage temperature range
Power dissipation (DC), T
C
≤
25 °C
Inductive load switch-off energy dissipation, single pulse
V
bb
= 12V,
T
j,start
= 150°C,
T
C
= 150°C const.
I
L
= 2.3 A, Z
L
= 98 mH, 0
Ω:
Electrostatic discharge capability (ESD)
IN:
(Human Body Model)
all other pins:
acc. MIL-STD883D, method 3015.7 and ESD assn. std. S5.1-1993
Symbol
V
bb
V
bb
V
Load dump4
)
I
L
T
j
T
stg
P
tot
E
AS
V
ESD
V
IN
I
IN
I
ST
Values
43
34
60
self-limited
-40 ...+150
-55 ...+150
18
335
1.0
2.0
-10 ... +16
±2.0
±5.0
Unit
V
V
V
A
°C
W
mJ
kV
V
mA
Input voltage (DC)
Current through input pin (DC)
Current through status pin (DC)
see internal circuit diagrams page 6
Thermal Characteristics
Parameter and Conditions
Thermal resistance
Symbol
Values
min
typ
max
--
--
7
--
--
75
39
Unit
K/W
chip - case:
R
thJC
junction - ambient (free air):
R
thJA
SMD version, device on PCB
5)
:
2
)
3)
4)
5
)
Supply voltages higher than V
bb(AZ)
require an external current limit for the GND and status pins, e.g. with a
150
Ω
resistor in the GND connection and a 15 kΩ resistor in series with the status pin. A resistor for the
protection of the input is integrated.
R
I
= internal resistance of the load dump test pulse generator
V
Load dump
is setup without the DUT connected to the generator per ISO 7637-1 and DIN 40839
Device on 50mm*50mm*1.5mm epoxy PCB FR4 with 6cm
2
(one layer, 70µm thick) copper area for Vbb
connection. PCB is vertical without blown air.
Infineon Technologies AG
2
2003-Oct-01
BTS409L1
Electrical Characteristics
Parameter and Conditions
at
T
j
= 25 °C,
V
bb
= 12 V unless otherwise specified
Symbol
Values
min
typ
max
Unit
Load Switching Capabilities and Characteristics
On-state resistance (pin 3 to 5)
I
L
= 1.8 A
T
j
=25 °C:
R
ON
--
1.8
I
L(ISO)
I
L(GNDhigh)
--
160
320
2.3
--
200
400
--
10
A
mA
µs
mΩ
T
j
=150 °C:
Nominal load current, ISO Norm (pin 3 to 5)
V
ON
= 0.5 V,
T
C
= 85 °C
Output current (pin
5
) while GND disconnected or
GND pulled up,
V
bb
=30 V,
V
IN
= 0, see diagram
page 7
Turn-on time
IN
to 90%
V
OUT
:
Turn-off time
IN
to 10%
V
OUT
:
R
L
= 12
Ω
,
T
j
=-40...+150°C
Slew rate on
10 to 30%
V
OUT
,
R
L
= 12
Ω
,
T
j
=-40...+150°C
Slew rate off
70 to 40%
V
OUT
,
R
L
= 12
Ω
,
T
j
=-40...+150°C
Operating Parameters
Operating voltage
6
)
Undervoltage shutdown
Undervoltage restart
T
j
=-40...+150°C:
T
j
=-40...+150°C:
T
j
=-40...+25°C:
T
j
=+150°C:
Undervoltage restart of charge pump
see diagram page 12
T
j
=-40...+150°C:
Undervoltage hysteresis
∆V
bb(under)
=
V
bb(u rst)
-
V
bb(under)
Overvoltage shutdown
T
j
=-40...+150°C:
Overvoltage restart
T
j
=-40...+150°C:
Overvoltage hysteresis
T
j
=-40...+150°C:
Overvoltage protection
7
)
T
j
=-40...+150°C:
I
bb
=40 mA
Standby current (pin 3)
V
IN
=0
T
j
=-40...+25°C
:
T
j
= 150°C:
Leakage output current (included in
I
bb(off)
)
V
IN
=0
Operating current (Pin 1)
8)
,
V
IN
=5 V,
T
j
=-40...+150°C
6)
7)
t
on
t
off
dV /dt
on
-dV/dt
off
80
80
0.1
0.1
200
200
--
--
400
400
1
1
V/µs
V/µs
V
bb(on)
V
bb(under)
V
bb(u rst)
V
bb(ucp)
∆V
bb(under)
V
bb(over)
V
bb(o rst)
∆V
bb(over)
V
bb(AZ)
5.0
3.5
--
--
--
34
33
--
42
--
--
--
5.6
0.2
--
--
0.5
47
34
5.0
5.0
7.0
7.0
--
43
--
--
--
V
V
V
V
V
V
V
V
V
I
bb(off)
I
L(off)
I
GND
--
--
--
--
10
12
--
1.8
23
28
12
3.5
µA
µA
mA
At supply voltage increase up to
V
bb
= 5.6 V typ without charge pump,
V
OUT
≈V
bb
- 2 V
See also
V
ON(CL)
in table of protection functions and circuit diagram page 7.
Infineon Technologies AG
3
2003-Oct-01
BTS409L1
Parameter and Conditions
at
T
j
= 25 °C,
V
bb
= 12 V unless otherwise specified
Symbol
Values
min
typ
max
Unit
Protection Functions
9)
Initial peak short circuit current limit (pin 3 to 5)
T
j
=-40°C:
T
j
=25°C:
T
j
=+150°C:
Repetitive short circuit shutdown current limit
T
j
=
T
jt
(see timing diagrams, page 10)
Output clamp (inductive load switch off)
at
V
OUT
=
V
bb
-
V
ON(CL)
I
L
= 40 mA:
Thermal overload trip temperature
Thermal hysteresis
Reverse battery (pin 3 to 1)
10
)
Diagnostic Characteristics
Open load detection current
(on-condition)
I
L(SCp)
5.5
4.5
3
I
L(SCr)
--
V
ON(CL)
T
jt
∆
T
jt
-V
bb
41
150
--
--
4
47
--
10
--
--
53
--
--
32
A
V
°C
K
V
9.5
7.5
5
13
11
7
A
T
j
=-40 °C
:
I
L (OL)
T
j
=25 ..150°C:
10
10
2
--
--
3
200
150
4
mA
V
Open load detection voltage
11
) (off-condition)
V
OUT(OL)
T
j
=-40..150°C:
Internal output pull down
(pin 5 to 1),
V
OUT
=5 V,
T
j
=-40..150°C
R
O
4
10
30
kΩ
8
)
Add
I
ST
, if
I
ST
> 0, add
I
IN
, if
V
IN
>5.5 V
9
) Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as "outside" normal operating range. Protection functions are not
designed for continuous repetitive operation.
10
) Requires 150
Ω
resistor in GND connection. The reverse load current through the intrinsic drain-source
diode has to be limited by the connected load. Note that the power dissipation is higher compared to normal
operating conditions due to the voltage drop across the intrinsic drain-source diode. The temperature
protection is not active during reverse current operation! Input and Status currents have to be limited (see
max. ratings page 2 and circuit page 7).
11)
External pull up resistor required for open load detection in off state.
Infineon Technologies AG
4
2003-Oct-01
BTS409L1
Parameter and Conditions
at
T
j
= 25 °C,
V
bb
= 12 V unless otherwise specified
Symbol
Values
min
typ
max
Unit
Input and Status Feedback
12
)
Input resistance
see circuit page 6
Input turn-on threshold voltage
T
j
=-40..+150°C:
Input turn-off threshold voltage
T
j
=-40..+150°C:
Input threshold hysteresis
Off state input current (pin 2),
V
IN
= 0.4 V,
T
j
=-40..+150°C
On state input current (pin 2),
V
IN
= 3.5 V,
T
j
=-40..+150°C
Delay time for status with open load after switch
off
(see timing diagrams, page 11
),
T
j
=-40..+150°C
Status invalid after positive input slope
(open load)
T
j=-40 ... +150°C:
Status output (open drain)
Zener limit voltage
T
j
=-40...+150°C,
I
ST
= +1.6 mA:
ST low voltage
T
j
=-40...+25°C,
I
ST
= +1.6 mA:
T
j
= +150°C,
I
ST
= +1.6 mA:
R
I
V
IN(T+)
V
IN(T-)
∆
V
IN(T)
I
IN(off)
I
IN(on)
t
d(ST OL4)
t
d(ST)
2.5
1.7
1.5
--
1
20
100
--
3.5
--
--
0.5
--
50
400
250
6
3.5
--
--
50
90
800
600
kΩ
V
V
V
µA
µA
µs
µs
V
ST(high)
V
ST(low)
5.4
--
--
6.1
--
--
--
0.4
0.6
V
12)
If a ground resistor R
GND
is used, add the voltage drop across this resistor.
Infineon Technologies AG
5
2003-Oct-01
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