1 Features

• Input voltage range: 1.8V 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

– TPS610331: 1.65-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 93.60 efficiency at VIN = 3.3 V, VOUT = 5

V, and IOUT = 1 A

– Up to 90.62 efficiency at VIN = 3.3 V, VOUT = 5

V, and IOUT = 2 A

• Extend the system operating time

– Typical 20-μA quiescent current into VIN pin

– Typical 4.7μA 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

• Spread spectrum frequency modulation

• 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

TPS610331 has 1.65-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.