TPSM8281x 2.75V to 6V Input, 1A to 4A Step-Down Power Modules With Integrated

Inductor and Frequency Synchronization in MicroSiP™ and MagPack™ Package

1 Features

• Adjustable and synchronizable switching

frequency of 1.8MHz to 4MHz

• Two package types available

– MagPack package (shields inductor and IC) 13-

pin, < 2.0mm tall

– μSIL 14-pin, < 2.4mm tall

• Optimized for low EMI requirements

– Flip-chip die mount (no bond wires)

– Simplified layout through optimized pinout

• Spread spectrum clocking versions available

• Selectable forced PWM or PFM/PWM operation

• Output voltage accuracy ±1% (PWM operation)

• 2.75V to 6V input voltage range

• 0.6V to 5.5V output voltage range

• Adjustable soft start or tracking

• Power-good output with window comparator

• Precise ENABLE input allows

– User-defined undervoltage lockout

– Exact sequencing

• 100% duty cycle

• Output discharge

• 15µA typical quiescent current

• Excellent thermal performance

• –40°C to 125°C operating temperature range

• Pin-to-pin 6A version, 1.6mm tall: TPSM82816

• Create a custom design using the TPSM8281x

with the WEBENCH® Power Designer

2 Applications

• Optical modules, data center interconnect

• Test and measurement

• Patient monitoring and diagnostics

• Wireless infrastructure

• Aerospace and defense

3 Description

TPSM8281x is a family of pin-to-pin compatible,

high-efficiency, and easy to use synchronous step-

down DC/DC power modules with integrated inductors

with output currents ranging from 1A up to 4A.

The devices use a fixed-frequency peak current-

mode control topology and support high power

density requirements for telecommunication, test

and measurement, and medical applications. Low

resistance switches allow up to 4A continuous output

current at high ambient temperatures. The switching

frequency is adjustable from 1.8MHz to 4MHz and

can also be synchronized to an external clock. In

PFM/PWM mode, the TPSM8281x maintains high

efficiency over the whole load range. The devices

provide 1% output voltage accuracy in PWM mode,

which eases designing precise power supplies. The

SS/TR pin can be used to limit inrush current through

a precise start-up ramp, or for sequencing by tracking

the output voltage to an external voltage applied to

this pin.

Device Information

PART

NUMBER(2)

OUTPUT

CURRENT

PACKAGE(1)

BODY SIZE (NOM)

TPSM82810

4A

SIL (µSiL, 14)

3.0mm × 4.0mm × 2.4mm

VCA (QFN, 13)

2.5mm × 3.0mm × 1.95mm

TPSM82813

3A

SIL (µSiL, 14)

3.0mm × 4.0mm × 2.4mm

VCA (QFN, 13)

2.5mm × 3.0mm × 1.95mm

TPSM82812(3)

2A

VCA (QFN, 13)

2.5mm × 3.0mm × 1.95mm

TPSM82811(3)

1A

(1)

For more information, see Section 12.

(2)

See the Device Comparison Table.

(3)

Preview information (not Production Data).

Schematic

Output Current (A)

40

45

50

55

60

65

70

75

80

85

90

95

100

1

100m

10m

1m

100u

10u

D002

VOUT = 0.6V

VOUT = 1.2V

VOUT = 1.8V

VOUT = 2.5V

TPSM82813PVCAR Efficiency; VIN = 3.3V

TPSM82810, TPSM82813

SLUSDN6D – SEPTEMBER 2019 – REVISED JUNE 2026

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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.