TPS281C30B中文资料德州仪器数据手册PDF规格书

1 Features

• Wide operating voltage range: 6V to 36V

• 64V DC tolerance when disabled

• Low RON: 30mΩ typ, 55mΩ max

• Improve system level reliability through adjustable

current limiting

– Version A, C: 1A to 5A (fixed 0.5A)

– Version B, D, E: 2A to 10A (fixed 0.5A)

• Accurate current sensing

– ±4% at 1A in standard sense mode

– ±12.5% at 6mA in high accuracy sense mode

• Integrated inductive discharge clamp > 65V

• Low standby current of < 1μA (standby mode only

available in version A, B, C, D)

• Low quiescent current (Iq) of < 1.5mA

• Functional safety capable

• Operating junction temperature: –40 to 125°C

• Input control: 1.8V, 3.3V, and 5V logic compatible

• Integrated fault sense voltage scaling for ADC

protection

• Open-load detection in off-state

• Thermal shutdown and swing detection

• 14-pin thermally-enhanced TSSOP package

• 20-pin thermally-enhanced QFN package

2 Applications

• Digital output module

• Safe torque off (STO)

• Holding brake

• General resistive, inductive, and capacitive loads

3 Description

TPS281C30x is a single channel smart high-side

switch designed to meet the requirements of industrial

control systems. The low RON (30mΩ) minimizes

device power dissipation, driving a wide range of

output load current up to 6A DC and the 64V DC

tolerance improves system robustness.

The device integrates protection features such as

thermal shut down, output clamp, and current limit.

These features improve system robustness during

fault events such as short circuit. TPS281C30x

implements an adjustable current limiting circuit that

improves the reliability of the system by reducing

inrush current when driving large capacitive loads

and minimizing overload current. In order to drive

high inrush current loads such as lamps or fast

charging capacitive loads, TPS281C30x implements

an inrush current time period with a higher level of

allowed current. The device also provides an accurate

load current sense that allows for improved load

diagnostics such as overload and open-load detection

enabling better predictive maintenance.

TPS281C30E provides enhanced Electrical Fast

Transient (EFT) immunity, where the device will stay

off with up to 2.5kV EFT pulse applied at VS or

VOUT, 10nF output capacitor and 100pF coupling

capacitor between the pulse generator and the output.

The EFT level can be further increased if a larger

output capacitor is used. The enhanced EFT immunity

improves the system's robustness against undesired

coupling in the industrial systems.

TPS281C30x is available in a small 14-pin, 4.4mm ×

5mm HTSSOP leaded package (version A, B, C, D)

with 0.65mm pin pitch and 20-pin, 5mm × 5mm QFN

with 0.65mm pin pitch (all versions) minimizing the

PCB footprint.