LD2985AM33R

$1.10

Description：IC REG LINEAR 3.3V 150MA SOT23-5
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:38c3181a969a Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 3.3V 150MA SOT23-5
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR),Cut Tape (CT)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：16V
Voltage - Output (Min/Fixed)：3.3V
Voltage - Output (Max)：-
Voltage Dropout (Max)：0.575V @ 150mA
Current - Output：150mA
Current - Quiescent (Iq)：150 µA
Current - Supply (Max)：4 mA
PSRR：45dB (1kHz)
Control Features：Enable
Protection Features：Over Current, Over Temperature
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：SC-74A, SOT-753
Supplier Device Package：SOT-23-5
Grade：-
Qualification：-

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LD2985AM33R

Overview

The LD2985AM33R is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3 V output with a maximum load current of 150 mA. The device features an ultra-low dropout voltage, specified at 280 mV under full load and 7 mV at light loads. Quiescent current is typically 2 mA at full load and drops to less than 1 μA in sleep mode when the inhibit pin is activated. It operates within an input voltage range up to 16 V and supports a junction temperature range from -40 °C to +125 °C.

Feature Summary

Logic-controlled electronic shutdown via TTL-compatible inhibit pin for standby power management
Ultra-low dropout performance suitable for battery-powered systems
Low output noise voltage capability with external bypass capacitor
Integrated internal current and thermal limiting protection

Applications

Cellular phones
Palmtop laptop computers
Personal digital assistants (PDA)
Camcorders and cameras

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm package integrity and marking consistency against official datasheets. Check for RoHS compliance status and ensure storage conditions meet moisture sensitivity level requirements. Validate lot traceability for quality assurance purposes before integration into production lines.

Selection Notes

Select this regulator for applications requiring precise 3.3 V regulation with minimal voltage drop across the component. Consider its low quiescent current for extended battery life in portable devices. Ensure the design accommodates the SOT-23-5L footprint and thermal dissipation needs. Verify that the required output noise specifications align with the device's capabilities when using the recommended bypass capacitor configuration.

Part Context

This component belongs to the LD2985 family of low-dropout regulators designed for low-noise and low-power applications. The series offers various fixed output voltages including 1.8 V, 2.5 V, 2.8 V, 3.0 V, 3.1 V, 3.3 V, and 5.0 V. All variants share similar electrical characteristics regarding dropout voltage, quiescent current, and protection features, differing primarily in their fixed output voltage setting.