tle8242 Infineon Technologies Corporation, tle8242 Datasheet - Page 26

• Manufacturer Part Number: tle8242
• Description: 8 Channel Fixed Frequency Constant Current Control With Current Profile Detection
• Manufacturer: Infineon Technologies Corporation

Figure 14
Over Voltage Shutdown and Diagnostics
If the voltage at the BAT pin is above VBAT
set (SPI Message #19 bit OV). During over voltage condition the integrator of the steady state current control is
halted (actual value of the duty cycle is not changed during over voltage). All other functions operate normally (e.g.
ADC, Dithering, Auto zero, Filters, …).
Electrical Characteristics:
V5D = 4.75V to 5.25V, Vbat = 5.5V to 42V,
current flowing into pin (unless otherwise specified)
Pos.
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
Data Sheet
Parameter
Over voltage shutdown
Open load detection voltage
POS pin OL pull down current
Short to GND detection voltage
POS pin SG pull-up current
NEG bias current - Low common
mode
NEG bias current - High common
mode
VPOS
OUTx
OFF-T
LOAD
SG-F
SPI Diagnostic
Read
Off-State Diagnostics Timing Diagram - short to ground
Short to
ground
Vsg
Vol
ok
Tested
Timer
T
OV
Symbol
V
V
I
V
I
I
I
j
Fault
Filter
PD(OL)
PU(SHG)
NEG(L)
NEG(H)
, the output drivers set all OUTx pins to low, and a diagnostic bit is
= -40 °C to +150 °C, all voltages with respect to ground, positive
BATOV
POS(OL)
POS(SHG)
26
Min.
42
V5A-2.5
90
V5A-3.8 –
-280
-40
0
Functional Description and Electrical Characteristics
Limit Values
–
–
150
-150
–
–
Typ.
Tested
Max.
–
V5A-1.5 V
225
V5A-2.8 V
-90
10
60
Timer
Fault
Filter
Unit
V
µA
µA
µA
µA
Rev. 1.0, 2009-02-25
Conditions
Rising voltage on
BAT
V5A=5V,
V
V5A=5V,
V
V5A=5V,
V
V5A=5V,
V
POS
POS
POS
POS
=V
=V
=V
=V
NEG
NEG
NEG
NEG
TLE8242
=V5A
=0V
=0V
=V5A