1 Features

• Input voltage range: 0.5V to 5.5V

• 0.7V minimum start-up voltage

• Input operating voltage (PVIN) down to 150mV

with signal AVIN > 0.7V

• Output voltage range: 1.8V to 5.5V for device with

input current limit no more than 1.2A

• Average input current limit: 5mA; 25mA; 50mA;

100mA; 250mA, 500mA, 1.2A, 1.5A (different

versions)

• 95nA typical quiescent current into VOUT

• 60nA typical shutdown current into AVIN

• Up to 88% efficiency at PVIN =AVIN=3.6V, VOUT

= 5V, and IOUT =10μA

• Up to 94% efficiency at PVIN=AVIN = 3.6V, VOUT

= 5V, and IOUT =200mA

• Fast transient performance: setting time ~8μs at

PVIN=AVIN = 3.6V, VOUT = 5V, IOUT = 0A ->

200mA

• True disconnection at EN low

• Automatic PFM/PWM mode transition

• Auto pass-through at AVIN > VOUT

• Output SCP and thermal shutdown protections

• QFN package (3mm x 2.7mm x 1.27mm)

2 Applications

• Smart watch, Smart band

• Portable medical equipment

• TWS

• Optical module

3 Description

The TPSM81299 is a synchronous boost module,

with inductor and converter both incorporated inside,

providing 95nA ultra-low quiescent current and

average input current limit. The device provides a

power product for portable equipment with alkaline

battery and coin cell battery. This device features high

efficiency under light-load condition to achieve long

operation time and average input current limit avoids

battery discharging with high current.

The TPSM81299 has wide input voltage range from

0.5V to 5.5V and output voltage ranges from 1.8V to

5.5V. The device has different versions for average

input current limit from 5mA to 1.5A. The TPSM81299

with 1.2A current limit supports up to 600mA output

current from 3.6V to 5V conversion and achieve

approximately 94% efficiency at 200mA load.

The TPSM81299 has optional fast-load transient

performance at output voltage is 4.5V, 5V or 5.5V.

In fast-load transient mode, the typical setting time is

8μs when output current transient from 0A to 200mA.

The device supports true shutdown function when it is

disabled.

The TPSM81299 offers a very small solution size with

7-pin 3mm x 2.7mm QFN package .