VND5E025AYTR-E STMicroelectronics, VND5E025AYTR-E Datasheet - Page 27

• Manufacturer Part Number: VND5E025AYTR-E
• Description: Power Switch ICs - Power Distribution Double Ch High Side 41V 25mOhm 60A
• Manufacturer: STMicroelectronics

Specifications of VND5E025AYTR-E

• Product Category: Power Switch ICs - Power Distribution
• Rohs: yes
• Operating Supply Voltage: 4.5 V to 28 V

VND5E025AK-E
3.4
Current sense and diagnostic
The current sense pin performs a double function (see
diagnostic):
●
●
A logic level high on CS_DIS pin sets at the same time all the current sense pins of the
device in a high impedance state, thus disabling the current monitoring and diagnostic
detection. This feature allows multiplexing of the microcontroller analog inputs by sharing of
sense resistance and ADC line among different devices.
Figure 33. Current sense and diagnostic
Current mirror of the load current in normal operation, delivering a current
proportional to the load one according to a know ratio K
easily converted to a voltage V
Linearity between I
V
depends on the output current (refer to current sense electrical characteristics
Table 9: Current sense (8 V < VCC < 18
Diagnostic flag in fault conditions, delivering a fixed voltage V
maximum current I
Table 11: Truth
–
–
–
–
To uC ADC
SENSE
Power limitation activation
Overtemperature
Short to V
Open-load in off-state with additional external components.
CS_DIS
I
OUT
R
in
PROT
/K
Table 9: Current sense (8 V < VCC < 18
R
X
SENSE
CC
table):
41V
in off-state
SENSEH
OUT
I
CURRENT
SENSEH
SENSEn
V
SENSE
and V
Doc ID 14618 Rev 4
in case of the following fault conditions (refer to
V
SENSEH
SENSE
SENSE
Overtemperature
is ensured up to 5V minimum (see parameter
Pwr_Lim
by means of an external resistor R
OL OFF
V)).
INPUTn
+
-
Figure 33: Current sense and
Main MOSn
V)). The current sense accuracy
GND
V
OL
V
CC
X
V
. The current I
BAT
OUTn
Application information
PU_CMD
SENSEH
I
I
Loff2r
Loff2f
R
R
PU
PD
V
PU
SENSE
SENSE
up to a
Load
can be
.
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