Datasheet

L4993 Electrical specifications
Doc ID 13517 Rev 8 7/32
2 Electrical specifications
2.1 Absolute maximum ratings
Stressing the device above the rating listed in Ta ble 3 may cause permanent damage to the
device. These are stress ratings only and operation of the device at these or any other
conditions above those indicated in the Operating sections of this specification is not
implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect
device reliability. Refer also to the STMicroelectronics SURE Program and other relevant
quality documents.
2.2 Thermal data
For details, please refer to Section 4.1: SO-8 thermal data and Section 4.2: SO-20 thermal
data.
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
Vsdc
DC supply voltage -0.3 to 40 V
I
Vsdc
Input current Internally limited
V
Vo
DC output voltage -0.3 to 6
(1)
1. Using the typical application schematic with Cout= 10 µF and Iout=0 A, when the regulator is switched-on,
an overshoot exceeding 6 V could occur.This behavior does not impact the reliability of the regulator.
V
I
Vo
DC output current Internally limited
V
Wi
Watchdog input voltage -0.3 to V
Vo
+ 0.3 V
V
od
Open drain output voltage -0.3 to V
Vo
+ 0.3 V
I
od
Open drain output current Internally limited
V
cr
Reset delay voltage -0.3 to V
Vo
+ 0.3 V
V
cw
Watchdog delay voltage -0.3 to V
Vo
+ 0.3 V
V
WEn
Watchdog Enable input voltage -0.3 to V
Vo
+0.3 V
T
j
Junction temperature -40 to 150 °C
V
ESD
ESD voltage level (HBM-MIL STD 883C) ±2 kV
V
ESD
ESD voltage level (CDM AEC-Q100-011) 750 V
Table 4. Thermal data
(1)
1. The values quoted are for PCB FR4 area= 58mm x 58mm, PCB thickness = 2mm, Cu thickness = 35µm ,
Copper areas: SO-8= 2 cm
2
, SO-20= 6 cm
2
.
Symbol Parameter Value Unit
R
th-jamb
Thermal resistance Junction to Ambient:
SO-8
SO-20
130
51
°C/W
°C/W