ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LIN 2.85V 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)：2.85V
- 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：-
Download product information
Overview
The LD2985BM285R is a fixed-output low-dropout (LDO) voltage regulator manufactured by STMicroelectronics, providing a nominal output of 2.8 V with a maximum load current of 150 mA. It operates within an input voltage range of 2.5 V to 16 V and features a very 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 utilizes a compact SOT-23-5L surface-mount package and supports operation across a temperature range of -40 °C to +125 °C.
Feature Summary
- Ultra-low dropout voltage performance for efficient power management
- Logic-controlled electronic shutdown function for standby power reduction
- Low output noise voltage capability with external bypass capacitor
- 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 '285R' against official STMicroelectronics documentation to confirm the exact output voltage tolerance and reel packaging specifications. Ensure compatibility with the required PCB footprint for the SOT-23-5L package. Confirm that the operating conditions align with the specified -40 °C to +125 °C temperature range for your intended application environment.
Selection Notes
Select this component when a stable 2.8 V rail is required for battery-powered portable electronics. The low quiescent current and shutdown feature make it suitable for systems requiring extended battery life. Ensure the input voltage remains within the 2.5 V to 16 V range and that the load does not exceed 150 mA. Consider the thermal dissipation capabilities of the SOT-23-5L package under maximum load conditions.
Part Context
The LD2985 series comprises fixed-output LDO regulators designed for low-noise, low-power applications. This specific variant belongs to the family offering multiple fixed voltage options including 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V. All variants share common features such as the SOT-23-5L package, inhibit functionality, and similar electrical characteristics regarding dropout voltage and protection circuits.
Replacement Considerations
Direct substitutes within the same family include LD2985BM18R (1.8 V), LD2985BM25R (2.5 V), LD2985BM30R (3.0 V), LD2985BM31R (3.1 V), LD2985BM33R (3.3 V), and LD2985BM50R (5.0 V). Verify that the alternative part number matches the required output voltage before substitution.
