TLE 8444SL Infineon Technologies, TLE 8444SL Datasheet - Page 17

• 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

5.3.2
The power supply Voltage V
shows the error flag signalling during an undervoltage and overvoltage situation where as
hysteresis concept implemented during undervoltage and overvoltage.
Under Voltage
If the supply voltage V
the Error Flags remain high (no error). If V
are restarted.
Over Voltage
If the supply voltage V
Error Flags are set. The error is not latched, i.e. if V
power stages are restarted and the Error Flags are reset.
Figure 6
Data Sheet
Power Supply Monitoring
Error Flag behavior for the Over- and Undervoltge case
Error Status
High Z
S
S
V
EF
EF
drops below the switch off voltage V
rises above the switch off voltage V
OUTx
ON
V
H
L
H
L
S
1
2
S
V
is monitored for over- and under voltage (refer to block diagram:
UVOFF
undervoltage without error
S
signalling
rises again and reaches the switch on voltage V
V
UVHY
S
falls again and reaches the switch on voltage V
17
V
V
UVON
OVOFF
OVOFF
UVOFF
, all output transistors are switched off and the
t
t
d_EF
, all output transistors are switched off but the
d_EF
overvoltage with error
V
signalling
OVHY
t
t
d_EF
d_EF
V
UVON
OVON
Rev. 1.1, 2009-07-07
Figure 7
Figure
Block Description
, the power stages
t
t
t
t
TLE 8444SL
1).
shows the
OVON
Figure 6
, the