1 Features

• Input voltage range: 1.8 V to 5.5 V

• Output voltage range: 2.2 V to 5.5 V

– When FB connect to VIN output voltage fixed

5.0 V

• Two valley switching current limit options

– TPS61033: 5.5-A typical

– TPS610333: 1.85-A typical

• High efficiency and power capability

– Two 25-mΩ (LS) / 46-mΩ (HS) MOSFETs

– Support up to 2.4 MHz with small L-C

– Up to 93.42 efficiency at VIN = 3.3V, VOUT =

5V, and IOUT = 1A

– Up to 90.78 efficiency at VIN = 3.3V, VOUT =

5V, and IOUT = 2A

• Extend the system operating time

– Typical 20-μA quiescent current into VIN pin

– Typical 5.3μA quiescent current into VOUT pin

– Typical 0.1-μA shutdown current

• ±1.5 Reference voltage accuracy over –40°C to

+125°C

• Power good output with window comparator

• Pin-selectable auto PFM or forced PWM mode at

light load

• Pass-through mode when VIN > VOUT

• Safety and robust operation features

– True disconnection between input and output

during shutdown

– Output overvoltage and thermal shutdown

protections

– Output short-circuit protection

• 2.1-mm × 1.6-mm SOT583 8-Pin package

2 Applications

• Tablet(multimedia)

• Smart speaker

• Mobile POS

3 Description

The TPS61033 is a synchronous boost converter. The

device provides a power supply solution for portable

equipment and smart devices powered by various

batteries and other power supply. The TPS61033

has 5.5-A (typical) valley switch current limit and

TPS610333 has 1.85-A (typical) valley switch current

limit over full temperature range.

The TPS61033 uses adaptive constant on-time valleycurrent-

control topology to regulate the output voltage

and operates at 2.4-MHz switching frequency. There

are two optional modes at light load by configuring

the MODE pin: auto PFM mode and forced PWM

to balance the efficiency and noise immunity in light

load. The TPS61033 consumes a 20-μA quiescent

current from VIN at light load condition. During

shutdown, the TPS61033 is completely disconnected

from the input power and only consumes a 0.1-μA

current to achieve long battery life. The TPS61033

has 5.75-V output overvoltage protection, output short

circuit protection, and thermal shutdown protection.

The TPS61033 offers a very small solution size with

2.1-mm × 1.6-mm SOT583 package and minimum

amount of external components.