TPS22950_V02中文資料德州儀器數(shù)據(jù)手冊PDF規(guī)格書

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 us

– tON at VIN = 3.3 V: 550 us

? 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 uA (typ.)

– OFF state (ISD): 0.2 uA (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 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 characterized for operation over an ambient

temperature range of –40°C to 125°C.