BTS 7811K Infineon Technologies, BTS 7811K Datasheet - Page 6

• Manufacturer Part Number: BTS 7811K
• Manufacturer: Infineon Technologies

Specifications of BTS 7811K

• Packages: P-TO263-15
• Operating Range: 5.0 - 42.0 V
• Rds (on) (typ): 40.0 mOhm
• Id(lim): 42.0 A
• Iq (typ): 4.0 µA
• Diagnosis: OT, OL Status Flag

BTS 7811K
on. In the data sheet application example (Figure 5) the open load detection would be
used the following way:
• Set IH1 = IH2 = LOW (both high side switches off)
• Set IL2 = LOW, IL1 = HIGH (only low side switch 1 is on)
• Connect Rol (open load pull up) to 5V via transistor
If the load is connected properly it will pull down the voltage at SH2 to a value close to 0V.
If the load is disconnected the resistor will pull the voltage at SH2 to value close to 5V.
If the voltage at SH2 is higher than the open load detection voltage (VOUT(OL)) then
ST2 will be pulled down.
Status Flag
The two status flag outputs are an open drain output with Zener-diode which require a
pull-up resistor, c.f. the application circuit on page 16. ST1 and ST2 provide separate
diagnosis for each high-side switch. Various errors as listed in the table “Diagnosis” are
detected by switching the open drain output ST1/2 to low. Forward current in the
integrated body diode of the highside switch may cause undefined voltage levels at the
corresponding status output. The open load detection can be used to detect a short to
Vs as long as both lowside switches are off and R
is disconnected from 5V by
OL
BCR192W.
Data Sheet
6
Rev. 2.0, 2006-07-18