TPS22950-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• Input operating voltage range (VIN): 1.8 V–5.5 V

• Output current limit (ILIMIT): 0.05 A–3.5 A (typ.)

• TPS22950: Auto-retry current limit response

• TPS22950L: Latch off current limit response

• Thermal shutdown (TSD)

• ON-resistance (RON):

– RON at VIN = 5 V: 34 mΩ (typ.)

– RON at VIN = 3.3 V: 41 mΩ (typ.)

• Slow turn-ON timing limits inrush current (typ.):

– tON at VIN = 5 V: 800 μs

– tON at VIN = 3.3 V: 550 μs

• Always-ON reverse current blocking (TPS22950)

• Fault indication (FLT)

• Quick output discharge (QOD): 150 Ω

• Smart ON pin pulldown (RPD,ON):

– ON ≥ VIH (ION): 50 nA (max.)

– ON ≤ VIL (RPD,ON): 500 kΩ (typ.)

• Low power consumption:

– ON state (IQ): 40 μA (typ.)

– OFF state (ISD): 0.2 μA (typ.)

• UL 2367 Recognition – File No. E169910

– Certified from ILIM = 66 mA to 2.46 A

2 Application

• Personal electronics

• Tablets

• Notebooks

• Game consoles

• Accessories

3 Description

The TPS22950x is a small, single channel load

switch with robust protection against fault cases with

adjustable output current limiting, reverse current

blocking, and thermal shutdown.

The switch ON state is controlled by a digital input

that is capable of interfacing directly with low-voltage

control signals. When power is first applied, a smart

pulldown is used to keep the ON pin from floating

until system sequencing is complete. After the pin is

deliberately driven high (>VIH), the smart pulldown is

disconnected to prevent unnecessary power loss.

The TPS22950/C responds to overcurrent events with

auto-retry behavior, while the TPS22950L uses a

debounce time and latch off behavior.

TPS22950x is available in a standard WCSP package

and leaded SOT package characterized for operation

over an ambient temperature range of –40°C to

125°C.