LD2985AM35R

$0.54

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

SKU:b32dffc5459e 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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LD2985AM35R

Overview

The LD2985AM35R 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 thermal limiting and current limiting. It is housed in a compact SOT-23-5L surface-mount 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 thermal and current protection mechanisms

Applications

Battery-powered portable electronics
Cellular phones and mobile communication devices
Personal digital assistants (PDA) and palmtop computers

Procurement Notes

Verify the specific suffix 'AM35R' against official STMicroelectronics documentation to confirm the exact output voltage tolerance and package variant. Ensure compatibility with design-in requirements regarding the SOT-23-5L footprint and thermal characteristics. Cross-reference datasheet specifications for line regulation and noise reduction when using external bypass capacitors.

Selection Notes

Select this component for applications requiring precise 3.5 V regulation with minimal voltage drop under varying load conditions. Consider its low quiescent current and shutdown functionality for battery-operated systems where standby power consumption is critical. Verify that the required output current does not exceed the 150 mA limit and that the ambient temperature remains within the specified operational range.

Part Context

The LD2985 series belongs to STMicroelectronics' portfolio of low-noise, low-power LDO regulators designed for space-constrained and energy-efficient designs. This family emphasizes high performance in small packages, making it suitable for modern handheld devices. The AM35R designation indicates a specific fixed output voltage configuration within the broader LD2985 product line.