TPS482H85B-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• Qualified for automotive applications

• AEC-Q100 qualified with the following results:

– Device temperature grade 1: –40°C to 125°C

ambient operating temperature range

– Device HBM ESD classification level H3A

– Device CDM ESD classification level C4B

• Functional safety capable

– Documentation available to aid functional safety

system design

• Dual-channel 85-mΩ smart high-side switch with

full diagnostics

• Wide operating voltage 6 V to 58 V

• Ultra-low standby current, < 2 μA per channel

• High-accuracy current sense: ±15% under > 50-

mA load

• Selectable current limit levels with external

resistor, ±15% accuracy at 2A load

• Protection

– Short-to-GND Protection by current limit

(internal or external)

– Absolute and relative thermal shutdown

– Inductive Load negative voltage clamp with

optimized slew rate

– Loss-of-GND and loss-of-battery protection

• Diagnostics

– Overcurrent and short-to-ground detection

– Open-Load and short-to-battery detection

– Accurate current sense

• 3.5mm x 3mm small form factor 12-pin QFN

package

2 Applications

• ADAS modules

• Automotive display module

• Body control module

3 Description

The TPS4H82H85-Q1 device is fully protected dualchannel

smart high-side switch with two integrated

85mΩ NMOS power FETs intended for 24V and 48V

automotive supply systems. Protection and diagnostic

features include accurate current sense, selectable

current limit levels, OFF-state open-load and short-tobattery

detection and thermal shutdown.

High-accuracy current sensing provides a better

realtime monitoring effect and more accurate

diagnostics without further calibration. The external

selectable-level high-accuracy current limit allows

setting the current limit value by application. The

device highly improves the reliability of the system

by effectively clamping the inrush current under startup

or short-circuit conditions. The TPS4H82H85-Q1

device can be used as a high-side power switch for

a wide variety of resistive, inductive, and capacitive

loads, including low-wattage bulbs, LEDs, relays,

solenoids, and heaters.