描述 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? 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.

特性 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