VNQ5050AK-E Datasheet, PDF (1/31 Pages) STMicroelectronics – Quad channel high side driver with analog current sense for automotive applications

VNQ5050AK-E
Quad channel high side driver with analog current sense
for automotive applications
Features
Max supply voltage
V_CC
41V
Operating voltage range
V_CC 4.5 to 36V
Max on-state resistance (per ch.) R_ON 50 mΩ
Current limitation (typ)
Off state supply current
I_LIMH
I_S
19 A
2 µA⁽¹⁾
1. Typical value with all loads connected.
■ 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
current range
– 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
– Reverse battery protection (see Figure 25)
– Electrostatic discharge protection
PowerSSO-24
Application
■ All types of resistive, inductive and capacitive
loads.
■ Suitable as LED driver.
Description
The VNQ5050AK-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
a safe level up to thermal shut-down intervention.
Thermal shut-down with automatic restart allows
the device to recover normal operation as soon as
the fault condition disappears.
Table 1. Device summary
Package
Tube
Order codes
Tape and Reel
PowerSSO-24
VNQ5050AK-E
VNQ5050AKTR-E
December 2007
Rev 6
1/31
www.st.com
31