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.