TPSM82816中文资料德州仪器数据手册PDF规格书

1 Features

• Adjustable and synchronizable switching

frequency of 1.8 MHz to 4 MHz

• Spread spectrum clocking (optional)

• Selectable forced PWM or PFM/PWM operation

• Output voltage accuracy ±1 (PWM operation)

• Input voltage range: 2.7 V to 6 V

• Output voltage range: 0.6 V to 5.5 V

• 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

• 26-μA typical quiescent current

• Pin to Pin compatible with TPSM82813 (3A) and

TPSM82810 (4A)

• Excellent thermal performance

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

2 Applications

• Optical modules, data center interconnect

• Signal measurement, source generation,

instrumentation

• Patient monitoring and diagnostics

• Wireless infrastructure

• Ruggedized Communication: sensors, imaging,

and radar

3 Description

TPSM82816 is part of a family of pin-to-pin 3-A, 4-A

and 6-A compatible high efficiency and easy to use

synchronous step-down DC/DC power modules with

integrated inductors. The devices are based on a

fixed-frequency peak current-mode control topology.

The devices are used in telecommunication, test and

measurement, and medical applications with high

power density and ease of use requirements. Low

resistance switches allow up to 6-A continuous output

current at high ambient temperatures. The switching

frequency is externally adjustable from 1.8 MHz to

4 MHz and can also be synchronized to an external

clock in the same frequency range. In Power Save

Mode, the TPSM82816 automatically enters PFM at

light loads to maintain high efficiency across the

whole load range. The TPSM82816 provides a 1

output voltage accuracy in PWM mode which helps

design a power supply with high output voltage

accuracy. The SS/TR pin sets the start-up time or

tracks the output voltage to an external source. This

allows external sequencing of different supply rails

and limits the inrush current during start-up.