VN5050AJ-E Datasheet, PDF (1/32 Pages) STMicroelectronics – Single channel high side driver with analog current sense for automotive applications

VN5050AJ-E
Single channel high side driver with analog
current sense for automotive applications
Features
Max supply voltage
Operating voltage range
Max On-State resistance
Current limitation (typ)
Off state supply current
V_CC
V_CC
R_ON
I_LIMH
I_S
41 V
4.5 to 36V
50 mΩ
16.5 A
2 µA
■ General features
– Inrush current active management by
power limitation
– Very low stand-by current
– 3.0V 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
■ Protection
– Undervoltage shut-down
– Overvoltage clamp
– Load current limitation
– Self limiting of fast thermal transients
– Protection against loss of ground and loss
of V_CC
– Thermal shut down
PowerSSO-12
– Reverse battery protection ( see
Application schematic)
– Electrostatic discharge protection
Application
■ All types of resistive, inductive and capacitive
loads
■ Suitable as LED driver
Description
The VN5050AJ-E is a monolithic device made
using STMicroelectronics VIPower 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 shut-down intervention.
Thermal shut-down with automatic restart allows
the device to recover normal operation as soon as
fault condition disappears.
Table 1. Device summary
Package
PowerSSO-12
Tube
VN5050AJ-E
Order codes
Tape and Reel
VN5050AJTR-E
September 2007
Rev 4
1/32
www.st.com
32