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September 2013 Doc ID 16374 Rev 2 1/36
1
VNQ5E050MK-E
Quad channel high-side driver with analog current sense
for automotive applications
Features
■
General
– Inrush current active management by
power limitation
– Very low standby current
– 3.0V CMOS compatible inputs
– Optimized electromagnetic emissions
– Very low electromagnetic susceptibility
– In compliance with the 2002/95/EC
european directive
– Very low current sense leakage
■
Diagnostic functions
– Proportional load current sense
– High current sense precision for wide
currents range
– Current sense disable
– Overload and short to ground (power
limitation) indication
– Thermal shutdown indication
■
Protections
– Undervoltage shutdown
– Overvoltage clamp
– Load current limitation
– Self limiting of fast thermal transients
– Protection against loss of ground and loss
of V
CC
– Overtemperature shutdown with auto
restart (thermal shutdown)
– Reverse battery protected (see
Figure 29: Application schematic)
– Electrostatic discharge protection
Applications
■
All types of resistive, inductive and capacitive
loads
■
Suitable as LED driver
Description
The VNQ5E050MK-E is a quad channel high-side
driver manufactured in the ST proprietary
VIPower M0-5 technology and housed in the tiny
PowerSSO-24 package. The VNQ5E050MK-E is
designed to drive 12V automotive grounded loads
delivering protection, diagnostics and easy 3V
and 5V CMOS compatible interface with any
microcontroller.
The device integrates advanced protective
functions such as load current limitation, inrush
and overload active management by power
limitation, overtemperature shut-off with
auto-restart and over-voltage active clamp.
A dedicated analog current sense pin is
associated with every output channel in order to
provide Enhanced diagnostic functions including
fast detection of overload and short-circuit to
ground through power limitation indication and
overtemperature indication.
The current sensing and diagnostic feedback of
the whole device can be disabled by pulling the
CS_DIS pin high to allow sharing of the external
sense resistor with other similar devices.
Max supply voltage V
CC
41V
Operating voltage range V
CC
4.5 to 28V
Max on-state resistance (per ch.) R
ON
50 mΩ
Current limitation (typ) I
LIMH
27 A
Off-state supply current I
S
2 µA
(1)
1. Typical value with all loads connected.
PowerSSO-24
www.st.com
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