E910.27A View Datasheet(PDF) - ELMOS Semiconductor AG
Part Name
Description
MFG CO.
'E910.27A' PDF : 50 Pages View PDF
- Preliminary -
E910.27A
Name Pin No. Typ c Description
WEN
18
D, I
Watchdog enable input. When true watchdog function is enabled. This function is with internal referen-
ces available only.The thresholds are CMOS level compatible.
The PWGD open drain output stays low for undervoltage condition at VFB and in case of internal error.
PWGD
19
D, O Use this output for sequencing or in combination with an external timing capacitor at CDLY for reset
delay timer function and watchdog timeout. This function is with internal references available only.
CDLY
20
A, I
Delay timing capacitor input. Connect a timing capacitor between CDLY and GND to set the reset out-
put duration and watchdog trigger time.
GND
21
S
ESD structure and substrat ground return for internal circuits. Make a short connection between this port
and the other grounds. A low impedance circuit ground plane is highly recommended.
PGND
22
High current power ground return for internal circuits. Make a short connection between this port, the
S free-wheel diode, input and output capacitors. Due tue high frequency currents, a low impedance circuit
ground plane is highly recommended.
SWD1
23
A, O, HV
Drain output of the internal power P-MOSFET. Connect the external choke and the free-wheel diode to
this port.
SWD2
24
A, O, HV
Drain output of the internal power P-MOSFET. Connect the external choke and the free-wheel diode to
this port.
c D = Digital, A = Analog, S = Supply, I = Input, O = Output, HV = High Voltage (max. 40V)
ELMOS Semiconductor AG
Specification 4 / 50
03SP0357E.00 05.09.2006
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