PEF2426HV1.1 Lantiq, PEF2426HV1.1 Datasheet - Page 20

• Manufacturer Part Number: PEF2426HV1.1
• Manufacturer: Lantiq

Specifications of PEF2426HV1.1

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Data Sheet
See also Table 4.
Table 4
PF
0
1
1
1
In case of simultaneous power up requests (PF
start-up sequencing. The four channels have different priority. First priority for channel
1, second priority for channel 2 etc.
By simultaneous power up requests on more than one channel, the channel with the
highest priority will be powered first, and will normally start with current limiting condition.
When this channel is powered up and the drawn current drops below the current
indication level, the next channel will be powered. And so on (see also figure 6 and
table 3).
3.4
Two different current limiting circuits are integrated to control the DMOS power switch.
An ultrafast and a fast current limiting circuit. See also Figure 5.
The ultrafast current limiting circuit consists of a bipolar npn-transistor T
bipolar npn-transistors are the fastest devices from the used technology. If the voltage
0
0
1
1
current
(other channels)
don’t care
at least one
above
indication
threshold
don’t care
don’t care
don’t care
don’t care
Line Current Control Circuit
Function Table for Controlling One Line
current
(this channel)
don’t care
don’t care
don’t care
above
indication
threshold
below
indication
threshold
don’t care
T
don’t care 0
don’t care 1
> T
< T
< T
> T
j
j1
j2
j3
j3
13
NACK Comment
1
1
0
1
1..4
) the QIHPC take care of a proper
line feeding not requested
power feeding not
acknowledged and the line is
not powered as long as an
other line is in overcurrent
condition
power feeding not
acknowledged and the line is
not powered, as long as the
junction temperature is to high
feeding: this line is in over
current condition
normal line feeding
overtemperature condition,
feeding is switched off
Functional Description
UF
PEF 2426
. Note that
2001-10-31