TLE 8444SL Infineon Technologies, TLE 8444SL Datasheet - Page 19

• Manufacturer Part Number: TLE 8444SL
• Manufacturer: Infineon Technologies

Specifications of TLE 8444SL

• Packages: PG-SSOP-24-7
• Ipeak: 4 x 0.8 A
• Inhibit: Y
• Iq (typ): 1.0 µA
• Mounting: SMT
• Technology: BCD

5.4
5.4.1
The device provides embedded protective functions. Integrated protection functions are designed to prevent IC
destruction under fault conditions described in this target datasheet. Fault conditions are considered as “outside”
normal operating range. Protection functions are not designed for continuous repetitive operation.
5.4.1.1
The low-side switches are protected against short circuit to supply and the high-side switches against short to
GND.
If a switch is turned on and the current rises above the shutdown threshold I
time t
current is limited to I
Figure 9
The delay time is optimized to limit the power that is dissipated in the device during a short circuit event. This
scheme allows high peak-currents as required in motor-applications during normal operations.
The output stage stays off and the corresponding diagnostics output information is set until INHIBIT toggles to low
and high again or a power-on reset is performed. (refer to
Data Sheet
dSD
OUTx
, the output transistor is turned off and the corresponding Error Flag is set. Within the delay time, the
Power-Outputs 1-4 (Half Bridge Outputs)
Protection and Diagnosis
Short Circuit of Output to Ground or Vs
Short circuit protection
short to Vs
short to GND
SC
as shown in
Figure
I
OUT
9.
I
I
SD
SC
19
Figure
13)
SD
t
dSD
for longer than the shutdown delay
Rev. 1.1, 2009-07-07
Block Description
TLE 8444SL
t