1 Features

• AEC-Q100 qualified:

– Device temperature grade 1: –40°C to +125°C

ambient operating temperature range

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• Input voltage range: 1.8V to 5.5 V

• Output voltage range: 2.2 V to 5.5 V (TPS61033)

– When FB is connected to VIN output voltage

fixed 5.0 V (TPS61033X )

• Two valley switching current limit options

– TPS61033-Q1: 5.5-A typical

– TPS610333-Q1: 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 = 3.3 V, VOUT = 5

V, and IOUT = 1 A

– Up to 90.78 efficiency at VIN = 3.3 V, VOUT = 5

V, and IOUT = 2 A

• Extends 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

• 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 SOT-5X3 8-Pin package

2 Applications

• Tablet (multimedia)

• Smart speaker

• Mobile POS

3 Description

The TPS61033-Q1 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 supplies. The

TPS61033-Q1 has a 5.5-A (typical) valley switch

current limit and TPS610333-Q1 has 1.85-A (typical)

valley switch current limit over full temperature range.

The TPS61033-Q1 uses adaptive, constant on-time

valley-current-control topology to regulate the output

voltage and operates at a 2.4-MHz switching

frequency. There are two optional modes at light load

by configuring the MODE pin: auto PFM mode and

forced PWM. These modes balance the efficiency

and noise immunity in light load. The TPS61033-Q1

consumes a 20 μA quiescent current from VIN at

light load condition. During shutdown, the TPS61033-

Q1 is completely disconnected from the input power

and only consumes a 0.1 μA current to achieve

long battery life. The TPS61033-Q1 has a 5.75-V

output overvoltage protection, an output short circuit

protection, and thermal shutdown protection.

The TPS61033-Q1 offers a small solution size with

a 2.1mm × 1.6mm SOT-5X3 (8) package and a

minimum amount of external components.