BTS 824R
Infineon Technologies AG 1 2003-Oct-01
Smart High-Side Power Switch
Four Channels: 4 x 90mΩ
Status Feedback
Product Summary Package
Operating Voltage V
bb
5.5...40V
Active channels one four parallel
On-state Resistance R
ON
90mΩ 22.5mΩ
Nominal load current I
L(NOM)
4.7A 19.0A
Current limitation I
L(SCr)
12A 12A
General Description
• N channel vertical power MOSFET with charge pump, ground referenced CMOS compatible input and
diagnostic feedback, 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
• Very low standby current
• CMOS compatible input
• Improved electromagnetic compatibility (EMC)
• Fast demagnetization of inductive loads
• Stable behaviour at undervoltage
• Wide operating voltage range
• Logic ground independent from load ground
Protection Functions Block Diagram
• 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 Function
• Diagnostic feedback with open drain output
• Open load detection in OFF-state
• Feedback of thermal shutdown in ON-state
Vbb
Logic
Channel 3
Channel 4
GND
Load 1
Load 2
Logic
Channel 1
Channel 2
Load 4
Load 3
IN1
ST1/2
IN2
IN3
ST3/4
IN4
Power SO 20
