TPSM828511 Series

2.7-V to 6-V, 1-A low-noise step-down module with integrated inductor in QFN package

Catalog

2.7-V to 6-V, 1-A low-noise step-down module with integrated inductor in QFN package

Part	Type	Number of Outputs	Features	Applications	Supplier Device Package	Voltage - Input (Min) [Min]	Voltage - Output 1 [Max]	Voltage - Output 1 [Min]	Current - Output (Max) [Max]	Package / Case	Mounting Type	Control Features	Size / Dimension [y]	Size / Dimension [z]	Size / Dimension [x]	Size / Dimension [z]	Size / Dimension [x]	Size / Dimension [y]	Operating Temperature [Max]	Operating Temperature [Min]	Power (Watts)	Voltage - Input (Max) [Max]
Texas Instruments TPSM828511RDYR	Non-Isolated PoL Module	1	Adjustable Output Remote On/Off	ITE (Commercial)	9-QFN-FCMOD (2.7x3)	2.7 V	5.5 V	0.6 V	1 A	9-PowerFQFN Module	Surface Mount	Active Low Enable	2.8 mm	0.08 in	3 mm	2 mm	0.12 in	0.11 in	125 °C	-40 °C	5.5 W	6 V

Catalog

2.7-V to 6-V, 1-A low-noise step-down module with integrated inductor in QFN package

Key Features

• 2.7-V to 6-V input voltage range0.6-V to 5.5-V output voltage rangeFamily of 0.5-A, 1-A and 2-A devices20-µA typical quiescent current±1% feedback voltage accuracy (PWM operation)2.25-MHz switching frequency (PWM operation)1.8-MHz to 4-MHz external synchronizationSelectable forced PWM or PFM/PWM operationAdjustable soft start-up to 10 ms or trackingPrecise ENABLE input allowsUser-defined undervoltage lockoutExact sequencing100% duty cycle modeActive output dischargePower-good output with window comparator–40°C to 125°C operating temperature range2.7-mm × 3.0-mm QFN package with 0.5-mm pitch2.7-V to 6-V input voltage range0.6-V to 5.5-V output voltage rangeFamily of 0.5-A, 1-A and 2-A devices20-µA typical quiescent current±1% feedback voltage accuracy (PWM operation)2.25-MHz switching frequency (PWM operation)1.8-MHz to 4-MHz external synchronizationSelectable forced PWM or PFM/PWM operationAdjustable soft start-up to 10 ms or trackingPrecise ENABLE input allowsUser-defined undervoltage lockoutExact sequencing100% duty cycle modeActive output dischargePower-good output with window comparator–40°C to 125°C operating temperature range2.7-mm × 3.0-mm QFN package with 0.5-mm pitch

Description

TPSM82851x is a family of pin-to-pin compatible, 0.5-A, 1-A, and 2-A 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 and they can be used in telecommunication, test and measurement, and medical applications with high power density and ease of use requirements. Low resistance switches allow up to 2-A continuous output current at high ambient temperatures. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PFM/PWM mode, the TPSM82851x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPSM82851x provides a 1% feedback 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 feature allows external sequencing of different supply rails and limits the inrush current during start-up. TPSM82851x is a family of pin-to-pin compatible, 0.5-A, 1-A, and 2-A 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 and they can be used in telecommunication, test and measurement, and medical applications with high power density and ease of use requirements. Low resistance switches allow up to 2-A continuous output current at high ambient temperatures. The switching frequency is internally fixed at 2.25 MHz and can also be synchronized to an external clock in the range from 1.8 MHz to 4 MHz. In PFM/PWM mode, the TPSM82851x automatically enters power save mode at light loads to maintain high efficiency across the whole load range. The TPSM82851x provides a 1% feedback 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 feature allows external sequencing of different supply rails and limits the inrush current during start-up.