INFINEON BTS409L1 User Manual
BTS409L1
Smart Highside Power Switch
Features
•
Overload protection
•
Current limitation
•
Short circuit protection
•
Thermal shutdown
•
Overvoltage protection (including load dump)
•
Fast demagnetization of inductive loads
•
Reverse battery protection
•
Undervoltage and overvoltage shutdown with
1
)
auto-restart and hysteresis
•
Open drain diagnostic output
•
Open load detection in ON-state
•
CMOS compatible input
•
Loss of ground and loss of V
•
Electrostatic discharge (ESD) protection
protection
bb
Application
•
µC compatible power switch with diagnostic
Product Summary
Overvoltage protection V
Operating voltage
V
43 V
bb(AZ)
5.0 ... 34 V
bb(on)
On-state resistance RON 200
Load current (ISO) I
Current limitation I
2.3 A
L(ISO)
4A
L(SCr)
TO-220AB/5
Standard
5
Straight leads
5
1
1
SMD
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.
mΩ
5
Voltag
source
V
Logic
Voltag
sensor
IN
2
ESD
4
ST
Logic
Overvoltag
protectio
Charge
Level
Rectifier
GND
Curren
1
Signal GND
1)
With external current limit (e.g. resistor R
=150 Ω) in GND connection, resistor in series with ST
GND
connection, reverse load current limited by connected load.
limit
protectio
Limit for
unclampe
ind.
Open
Short to
detectio
Gate
PROFET
Temperatur
sensor
R
GND
+ V
O
bb
OUT
Load GND
3
5
Load
Infineon Technologies AG 1 2003-Oct-01
BTS409L1
Pin Symbol Function
1 GND - Logic ground
2 IN I Input, activates the power switch in case of logical high signal
3 Vbb + Positive power supply voltage,
the tab is shorted to this pin
4 ST S Diagnostic feedback, low on failure
5 OUT
O Output to the load
(Load, L)
Maximum Ratings at Tj = 25 °C unless otherwise specified
Parameter Symbol Values Unit
Supply voltage (overvoltage protection see page 3) Vbb 43 V
Supply voltage for full short circuit protection
T
=-40 ...+150°C
j Start
Load dump protection2) V
3)
R
= 2 Ω, RL= 5.3 Ω, td= 200 ms, IN= low or high
I
LoadDump
= UA + Vs, UA = 13.5 V
Vbb 34 V
4
V
Load dump
)
60 V
Load current (Short circuit current, see page 4) IL self-limited A
Operating temperature range
Storage temperature range
Power dissipation (DC), TC ≤ 25 °C P
Inductive load switch-off energy dissipation, single pulse
V
= 12V, T
bb
= 150°C, TC = 150°C const.
j,start
IL = 2.3 A, ZL = 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
Tj
T
stg
18 W
tot
-40 ...+150
-55 ...+150
°C
EAS 335 mJ
V
1.0
ESD
kV
2.0
Input voltage (DC) VIN -10 ... +16 V
Current through input pin (DC)
Current through status pin (DC)
see internal circuit diagrams page 6
I
IN
I
ST
±2.0
±5.0
mA
Thermal Characteristics
Parameter and Conditions Symbol Values Unit
min typ max
75
K/W
7
Thermal resistance chip - case:
junction - ambient (free air):
SMD version, device on PCB5):
2)
Supply voltages higher than V
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.
3)
RI = internal resistance of the load dump test pulse generator
4)
V
Load dump
5)
Device on 50mm*50mm*1.5mm epoxy PCB FR4 with 6cm
connection. PCB is vertical without blown air.
is setup without the DUT connected to the generator per ISO 7637-1 and DIN 40839
require an external current limit for the GND and status pins, e.g. with a
bb(AZ)
R
thJC
R
thJA
2
(one layer, 70µm thick) copper area for Vbb
--
- 39
--
--
Infineon Technologies AG 2 2003-Oct-01
BTS409L1
Electrical Characteristics
Parameter and Conditions Symbol Values Unit
at Tj = 25 °C, Vbb = 12 V unless otherwise specified
Load Switching Capabilities and Characteristics
On-state resistance (pin 3 to 5)
IL = 1.8 A Tj=25 °C:
RON
min typ max
-- 160
200
mΩ
Tj=150 °C:
Nominal load current, ISO Norm (pin 3 to 5)
VON = 0.5 V, TC = 85 °C
Output current (pin 5) while GND disconnected or
I
L(ISO)
I
L(GNDhigh)
1.8 2.3
-- -- 10 mA
320
GND pulled up, Vbb=30 V, VIN= 0, see diagram
page 7
Turn-on time IN to 90% V
Turn-off time IN to 10% V
OUT
OUT
:
ton
:
t
off
80
80
200
200
RL = 12 Ω, Tj =-40...+150°C
Slew rate on
10 to 30% V
OUT
, R
= 12 Ω, Tj =-40...+150°C
L
Slew rate off
70 to 40% V
, RL = 12 Ω, Tj =-40...+150°C
OUT
Operating Parameters
Operating voltage6) Tj =-40...+150°C: V
Undervoltage shutdown Tj =-40...+150°C: V
Undervoltage restart Tj =-40...+25°C:
dV /dton 0.1 -- 1 V/µs
-dV/dt
bb(on)
bb(under)
V
bb(u rst)
0.1 -- 1 V/µs
off
5.0 -- 34 V
3.5 -- 5.0 V
-- -- 5.0
Tj =+150°C:
Undervoltage restart of charge pump
V
bb(ucp)
-- 5.6 7.0 V
see diagram page 12 Tj =-40...+150°C:
Undervoltage hysteresis
∆V
bb(under)
= V
bb(u rst)
- V
bb(under)
Overvoltage shutdown Tj =-40...+150°C: V
Overvoltage restart Tj =-40...+150°C: V
Overvoltage hysteresis Tj =-40...+150°C: ∆V
Overvoltage protection
7)
Tj =-40...+150°C:
∆V
bb(over)
bb(o rst)
V
bb(AZ)
bb(under)
-- 0.2 -- V
34 -- 43 V
33 -- -- V
-- 0.5 -- V
bb(over)
42 47 -- V
Ibb=40 mA
Standby current (pin 3)
I
VIN=0 T
T
Leakage output current (included in I
VIN=0
=-40...+25°C:
j
= 150°C:
j
)
bb(off)
Operating current (Pin 1)8), VIN=5 V,
=-40...+150°C
Tj
bb(off)
I
-- -- 12 µA
L(off)
I
-- 1.8 3.5 mA
GND
--
--
10
12
400
-- A
400
400
7.0
23
28
µs
V
µA
6)
At supply voltage increase up to Vbb= 5.6 V typ without charge pump, V
7)
See also V
in table of protection functions and circuit diagram page 7.
ON(CL)
≈Vbb - 2 V
OUT
Infineon Technologies AG 3 2003-Oct-01
BTS409L1
Parameter and Conditions Symbol Values Unit
at Tj = 25 °C, Vbb = 12 V unless otherwise specified
min typ max
Protection Functions9)
Initial peak short circuit current limit (pin 3 to 5) I
T
=-40°C:
j
Tj =25°C:
Tj =+150°C:
Repetitive short circuit shutdown current limit I
5.5
L(SCp)
9.5
4.5
3
L(SCr)
7.5
5
13
11
A
7
Tj = Tjt (see timing diagrams, page 10) -- 4 -- A
Output clamp (inductive load switch off)
at V
= Vbb - V
OUT
I
ON(CL)
= 40 mA: V
L
ON(CL)
41
47 53 V
Thermal overload trip temperature Tjt 150 -- -- °C
Thermal hysteresis
Reverse battery (pin 3 to 1)
10)
-Vbb -- -- 32 V
∆
Tjt -- 10 -- K
Diagnostic Characteristics
Open load detection current Tj=-40 °C:
(on-condition) Tj=25 ..150°C:
Open load detection voltage
T
11)
(off-condition)
=-40..150°C:
j
Internal output pull down
(pin 5 to 1), V
=5 V, Tj=-40..150°C
OUT
I
10
L (OL)
V
OUT(OL)
RO
--
10
--
200
150
mA
2 3 4V
4
10 30 kΩ
8)
Add I
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.
, if IST > 0, add IIN, if VIN>5.5 V
ST
Infineon Technologies AG 4 2003-Oct-01
BTS409L1
Parameter and Conditions Symbol Values Unit
at Tj = 25 °C, Vbb = 12 V unless otherwise specified
Input and Status Feedback
12)
Input resistance
see circuit page 6
Input turn-on threshold voltage Tj =-40..+150°C: V
Input turn-off threshold voltage Tj =-40..+150°C: V
RI 2.5 3.5 6 kΩ
IN(T+)
IN(T-)
Input threshold hysteresis ∆ V
Off state input current (pin 2), VIN = 0.4 V,
I
IN(off)
min typ max
1.7 -- 3.5 V
1.5 -- -- V
-- 0.5 -- V
IN(T)
1 -- 50 µA
Tj =-40..+150°C
On state input current (pin 2), VIN = 3.5 V,
I
20 50 90 µA
IN(on)
Tj =-40..+150°C
Delay time for status with open load after switch
t
d(ST OL4)
100 400 800 µs
off
(see timing diagrams, page 11), Tj =-40..+150°C
Status invalid after positive input slope
(open load) Tj=-40 ... +150°C:
t
d(ST)
-- 250 600 µs
Status output (open drain)
Zener limit voltage Tj =-40...+150°C, IST = +1.6 mA:
ST low voltage Tj =-40...+25°C, IST = +1.6 mA:
T
= +150°C, IST = +1.6 mA:
j
V
ST(high)
V
ST(low)
5.4
--
--
6.1
--
--
0.4
0.6
--
V
12)
If a ground resistor R
is used, add the voltage drop across this resistor.
GND
Infineon Technologies AG 5 2003-Oct-01
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