VN5050AJE High-Side Gate Drivers Sngl Ch HiSide Drivr PMIC Power
Management ICs
■ 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 VCC – Thermal shut
down
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 VCC 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.
