TPS22811_V01中文资料德州仪器数据手册PDF规格书

1 Features

• Wide operating input voltage range: 2.7 V to 16 V

– 20-V absolute maximum

• Integrated FET with low on-resistance: RON = 6

mΩ (typ.)

• Adjustable output slew rate control (dVdt)

• Active high enable input with adjustable

undervoltage lockout threshold (UVLO)

• Active low enable input with adjustable

undervoltage lockout threshold (OVLO)

• Fast overvoltage protection

– Adjustable overvoltage lockout (OVLO) with

1.2-μs (typ.) response time

• Analog load current monitor output (IMON)

– • ±9 accuracy for IOUT > 3 A

• Fast-trip response for short-circuit protection in

steady-state

– 640-ns (typ.) response time

– Fixed threshold

• Overtemperature protection

• Power-good (PG) indication with adjustable

threshold (PGTH)

• Quick Output Discharge

• Small footprint: QFN 2 mm × 2 mm, 0.45-mm pitch

2 Applications

• Optical modules

• Server/PC motherboard/add-on cards

• Enterprise routers/data center switches

• Industrial PC

• UHDTV

3 Description

The TPS22811x is a highly-integrated, powerdistribution

solution in a small package. The device

allows control and monitoring of power supply rails

using minimum number of external components.

Output slew rate and inrush current can be adjusted

using one external capacitor. Loads are protected

from input overvoltage conditions by cutting off the

output if input exceeds an adjustable overvoltage

threshold. The device integrates a fast-trip response

to provide protection against severe faults at the

output during steady-state.

The devices provide an accurate analog sense of

the output load current as well as a digital powergood

indication to help with system monitoring and

diagnostics.

The devices are available in a 2-mm × 2-mm, 10-

pin HotRod™ QFN package for improved thermal

performance and reduced system footprint.

The devices are characterized for operation over a

junction temperature range of –40°C to +125°C.