PROFET
®
BTS 840 S2
Infineon technologies 1 of 15 2003-Oct-01


Smart High-Side Power Switch
Two Channels: 2 x 30mΩ
Current Sense
Product Summary Package

Operating Voltage V
bb(on)
5.0...34V
Active channels: one two parallel
On-state Resistance R
ON
30mΩ 15mΩ
Load Current (ISO) I
L(ISO)
12A 24A
Current Limitation I
L(SCr)
24A 24A
General Description
• N channel vertical power MOSFET with charge pump, ground referenced CMOS compatible input,
diagnostic feedback and proportional load current sense monolithically integrated in Smart SIPMOS


technology.
• Providing embedded protective functions
Applications
• µC compatible high-side power switch with diagnostic feedback for 12V and 24V grounded loads
• All types of resistive, inductive and capacitve loads
• Most suitable for loads with high inrush currents, so as lamps
• Replaces electromechanical relays, fuses and discrete circuits
Basic Functions
• CMOS compatible input
• Undervoltage and overvoltage shutdown with auto-restart and hysteresis
• Fast demagnetization of inductive loads
• Logic ground independent from load ground
Protection Functions
• Short circuit protection
• Overload protection
• Current limitation
• Thermal shutdown
• Overvoltage protection (including load dump) with external
resistor
• Reverse battery protection with external resistor
• Loss of ground and loss of V
bb
protection
• Electrostatic discharge protection (ESD)
Diagnostic Functions
• Proportinal load current sense
• Diagnostic feedback with open drain output
• Open load detection in OFF-state with external resistor
• Feedback of thermal shutdown in ON-state

Vbb
Logic
Channel
1
Logic
Channel
2
IN1
ST1
IS1
IN2
ST2
IS2
GND
Load 1
Load 2
PROFET
OUT 1
OUT 2
P-DSO-20-12 (Power SO 20)