TPSM81033 5.5V, 5.5A, 2.4MHz, Synchronous Boost Power Module with MagPack™

Packaging Technology, Power Good Indicator and Output Discharge Function

1 Features

• Input voltage range: 1.8V to 5.5V

• Output voltage range: 2.2V to 5.5V

– FB connected to VIN for fixed 5.0V output

• 5.5A valley switching current limit

• Integreted 0.50μH (at 0A) power inductor

• Excellent thermal performance:

– < 30°C temperature rise at VIN = 3.6V, VOUT =

5V, IOUT = 2A, and TA=25C

• High efficiency and high power capability

– Two 25mΩ (LS) / 46mΩ (HS) MOSFETs

– > 90% efficiency at VIN = 3.6V, VOUT = 5V, and

IOUT = 2A

• 2.4MHz switching frequency

• Typical 20μA quiescent current into VIN pin

• Typical 0.1μA 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 at light

load

• Pass-through mode when VIN > VOUT

• Safety and robust operation features

– True disconnection between input and output

during shutdown

– Output overvoltage, thermal shutdown

protection and output short-circuit protection

• 2.6mm × 2.5mm QFN-FCMOD 9-Pin package

2 Applications

• Optical module

• Patient monitor

• Smart meter

3 Description

The TPSM81033 is a synchronous boost module. The

device provides a power supply solution for portable

equipment and smart devices powered by batteries

and other power supply. The TPSM81033 has 5.5A

(typical) valley switch current limit. The power module

uses TI's MagPack packaging technology to integrate

a synchronous boost converter and an inductor to

simplify design, reduce external components, and

save PCB area.

The TPSM81033 uses adaptive constant on-time

valley-current-control topology to regulate the output

voltage and operates at 2.4MHz 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 TPSM81033 consumes

a 20µA quiescent current from VIN at light load

condition. During shutdown, the TPSM81033 is

completely disconnected from the input power and

only consumes a 0.1µA current to achieve long

battery life. The TPSM81033 has 5.75V output

overvoltage protection, output short circuit protection,

and thermal shutdown protection. The TPSM81033

offers a very small solution size with 2.6mm × 2.5mm

QFN-FCMOD (9) package and minimum amount of

external components.

Device Information

PART NUMBER

PACKAGE

(1)

BODY SIZE (NOM)

TPSM81033

VCD (QFN-FCMOD,

9)

2.60mm × 2.50mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

PVIN

EN

VOUT

FB

GND

L1

OFF

ON

C1

C2

MODE

PFM

PWM

PG

R1

R2

R3

TPSM81033

SW

AVIN

2 x 22 F(0603) at Iout=1A

4 x 22 F(0603) at Iout=2A

22 F(0603)

Typical Application Circuit

TPSM81033

SLVSHL0B – JUNE 2024 – REVISED JULY 2024

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change

without notice.