IC-JJ Datasheet, PDF (16/17 Pages) IC-Haus GmbH – POWER MANAGEMENT iC

iC-JJ
POWER MANAGEMENT IC
Rev A1, Page 16/17
30mA LOW-SIDE DRIVER (NCRD)
The low-side driver is switched on by the microcontroller via TCRD = high. A comparator at output PCRD signals
the state of the digital crash output to the microcontroller.
TCRD PCRD State of the Driver Output NCRD
low
low
Output off
low
high Short circuit to ground or broken
wire
high low
Short circuit to KL15, KL15R
high high Output on
50mA HIGH-SIDE DRIVER (CRA)
The high-side driver is switched on by the microcontroller via TCRA = high. A comparator at output PCRA signals
the state of the analog crash output to the microcontroller.
TCRA PCRA State of the Driver Output CRA
low
low
Output off
low
high Short circuit vs. VBAT or broken
wire
high low
Short circuit to ground
high high Output on
200mA LOW-SIDE DRIVER (NFL)
The low-side driver which is switched on by the microcontroller via TFL = high. It is also switched on by a flip-flop
which mirrors the reset state. This flip-flop can be reset via a falling edge at TFL after the reset has ended. A
comparator at output PFL signals the state of the indicator lamp output to the microcontroller. The driver is
normally on when no supply voltage is available at the iC.
TFL PFL State of the Driver Output
low low Output off, lamp off
low high Short circuit to ground or broken
wire
high low Short circuit to KL15, KL15R
high high Output on, lamp on