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September 2013 Doc ID 12272 Rev 10 1/37
1
VND5050AJ-E
VND5050AK-E
Double channel high side driver with analog current sense
for automotive applications
Features
■
Main
– Inrush current active management by
power limitation
– Very low standby current
– 3.0 V CMOS compatible input
– Optimized electromagnetic emission
– Very low electromagnetic susceptibility
– In compliance with the 2002/95/ec
european directive
■
Diagnostic functions
– Proportional load current sense
– High current sense precision for wide range
currents
– Current sense disable
– Thermal shutdown indication
– Very low current sense leakage
■
Protections
– Undervoltage shutdown
– Overvoltage clamp
– Load current limitation
– Self limiting of fast thermal transients
– Protection against loss of ground and loss
of V
CC
– Thermal shutdown
– Reverse battery protection (see Application
schematic on page 21)
– Electrostatic discharge protection
Applications
■
All types of resistive, inductive and capacitive
loads
■
Suitable as LED driver
Description
The VND5050AJ-E, VND5050AK-E is a
monolithic device made using STMicroelectronics
VIPower M0-5 technology. It is intended for driving
resistive or inductive loads with one side
connected to ground. Active V
CC
pin voltage
clamp protects the device against low energy
spikes (see ISO7637 transient compatibility
table).
This device integrates an analog current sense
which delivers a current proportional to the load
current (according to a known ratio) when
CS_DIS is driven low or left open. When CS_DIS
is driven high, the current sense pin is in a high
impedance condition.
Output current limitation protects the device in
overload condition. In case of long overload
duration, the device limits the dissipated power to
safe level up to thermal shutdown intervention.
Thermal shutdown with automatic restart allows
the device to recover normal operation as soon as
fault condition disappears.
Max transient supply voltage V
CC
41 V
Operating voltage range V
CC
4.5 to 36 V
Max on-state resistance (per ch.) R
ON
50 mΩ
Current limitation (typ) I
LIMH
18 A
Off-state supply current I
S
2µA
(1)
1. Typical value with all loads connected
Table 1. Device summary
Package
Order codes
Tube Tape and reel
PowerSSO-12
VND5050AJ-E VND5050AJTR-E
PowerSSO-24
VND5050AK-E VND5050AKTR-E
PowerSSO-24PowerSSO-12
www.st.com
