LD2985BM35R

$0.54

Description：IC REG LINEAR 3.5V 150MA SOT23-5
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)

SKU:619a3baa4c99 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR 3.5V 150MA SOT23-5
Series：-
Mfr：STMicroelectronics
Package：Tape & Reel (TR)
Output Configuration：Positive
Output Type：Fixed
Number of Regulators：1
Voltage - Input (Max)：16V
Voltage - Output (Min/Fixed)：3.5V
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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LD2985BM35R

Overview

The LD2985BM35R is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics, providing a stable 3.5 V output with a maximum load current of 150 mA. It operates within an input voltage range of 2.5 V to 16 V and features an ultra-low dropout voltage of 280 mV at full load. The device incorporates logic-controlled electronic shutdown via a TTL-compatible inhibit pin, reducing quiescent current to less than 1 μA in sleep mode. Internal protections include current limiting and thermal shutdown. It is housed in a compact SOT-23-5L package and supports an operating temperature range from -40 °C to +125 °C.

Feature Summary

Ultra-low dropout voltage performance for efficient power management
Logic-controlled electronic shutdown with deep sleep capability
Integrated internal current and thermal protection mechanisms

Applications

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

Procurement Notes

Verify the specific suffix 'BM35R' against official STMicroelectronics documentation to confirm the exact output voltage rating and package variant. Ensure compatibility with required PCB footprint dimensions for the SOT-23-5L package. Cross-reference the part number with authorized distributors to validate authenticity and active status before procurement.

Selection Notes

Select this component when a fixed 3.5 V supply is required for noise-sensitive or battery-powered applications. Consider its low quiescent current and shutdown functionality for systems requiring extended standby life. Verify that the input voltage remains within the specified 2.5 V to 16 V range under all operating conditions.

Part Context

This part belongs to the LD2985 family of very low drop and low noise voltage regulators. The series offers various fixed output voltages including 1.8, 2.5, 2.8, 3.0, 3.1, 3.3, and 5.0 V. The LD2985BM35R specifically denotes the 3.5 V output variant within this lineup, sharing common features like the SOT-23-5L package and inhibit function.