LD3980PU135R

$0.76

Description：IC REG LINEAR 1.35V 300MA 6-DFN
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)

SKU:aa69745ecbb1 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 1.35V 300MA 6-DFN
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：3.6V
Voltage - Output (Min/Fixed)：1.35V
Voltage - Output (Max)：-
Voltage Dropout (Max)：-
Current - Output：300mA
Current - Quiescent (Iq)：110 µA
Current - Supply (Max)：130 µA
PSRR：60dB ~ 58dB (1kHz ~ 10kHz)
Control Features：Enable
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Package / Case：6-VDFN Exposed Pad
Supplier Device Package：6-DFN (3x3)
Grade：-
Qualification：-

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LD3980PU135R

Overview

The LD3980PU135R is a fixed-output linear voltage regulator manufactured by STMicroelectronics, providing a stable 1.35V output with a maximum continuous load current of 300mA. It operates within an input voltage range of 1.7V to 3.6V and features an ultra-low dropout voltage of 130mV at full load. The device incorporates logic-controlled electronic shutdown, reducing quiescent current to below 1µA in standby mode. It includes internal overcurrent and thermal overload protection mechanisms. The component is housed in a compact 6-DFN (3x3mm) surface-mount package.

Feature Summary

Ultra-low dropout performance ensures efficient power delivery from battery sources
Logic-controlled shutdown function enables deep standby modes for extended battery life
Compatible with low-cost ceramic capacitors for simplified circuit design
Integrated short-circuit and thermal protection safeguards against operational faults

Applications

Mobile phone power management systems
Personal digital assistant (PDA) circuits
Cordless phone applications
Portable information appliances

Procurement Notes

Verify the specific ordering suffix 'PU' to confirm the 6-DFN package configuration. Confirm that the '135' designation matches the required 1.35V fixed output voltage. Check the datasheet revision history for any updates to electrical characteristics or mechanical dimensions before finalizing the design.

Selection Notes

Select this component when a fixed 1.35V rail is required with minimal external components. Ensure the input voltage remains above 1.7V to maintain regulation. Verify that the system's thermal requirements align with the DFN package's thermal resistance capabilities under expected ambient conditions.

Part Context

This part belongs to the LD3980 family of low-dropout regulators designed for low-power, battery-operated applications. The family offers various fixed output voltages ranging from 0.8V to 3.0V. All variants share similar electrical characteristics, including low quiescent current and ceramic capacitor compatibility, differing primarily in their fixed output voltage settings.