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LP3985IM5-2.8

Name: LP3985IM5-2.8
Rating: 4.7 (12 reviews)

IC REG LINEAR 2.8V 150MA SOT23-5

製造商
製造商。部分 #LP3985IM5-2.8
包 SOT-23-5
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規格

Package	Tape & Reel (TR)
ProductStatus	Obsolete
OutputConfiguration	Positive
OutputType	Fixed
NumberofRegulators	1
Voltage-Input(Max)	6V
Voltage-Output(Min/Fixed)	2.8V
VoltageDropout(Max)	0.1V @ 150mA
Current-Output	150mA
Current-Quiescent(Iq)	150 µA
Current-Supply(Max)	250 µA
PSRR	50dB ~ 40dB (1kHz ~ 10kHz)
ControlFeatures	Enable
ProtectionFeatures	Over Current, Over Temperature, Short Circuit
OperatingTemperature	-40°C ~ 125°C
MountingType	Surface Mount
Package/Case	SC-74A, SOT-753

概述

Description

LP3985IM5-2.8 is a fixed-output low-dropout (LDO) voltage regulator from STMicroelectronics. It provides a stable 2.8 V rail from a higher input in a compact 5‑pin package (IM5 code). It’s suited for space‑constrained, battery‑powered designs needing a simple, low-noise supply.
Key points:
- Output: fixed 2.8 V
- Input range: up to about 5.5 V (per datasheet)
- Load current: typically around 100–150 mA (check datasheet)
- Dropout: low (typical) at modest loads
- Protections: current limit and thermal shutdown
- Enable/shutdown input to turn the regulator off
- External input/output capacitors required with values and ESR per the datasheet
Applications: microcontrollers, sensors, and other portable devices needing a stable 2.8 V rail. For exact electrical specs, pinout, and capacitor recommendations, consult the LP3985IM5‑2.8 datasheet.

Features

LP3985IM5-2.8 features (fixed 2.8 V LDO in IM5 package):
- Fixed output: 2.8 V
- Output current: up to about 150 mA
- Low dropout: low Vin headroom (typical dropout in a few hundred millivolts)
- Very low quiescent current
- Stable with ceramic output capacitors (low ESR)
- Input voltage range suitable for typical systems (approximately 2.7–5.5 V)
- Good line and load regulation; solid PSRR
- Protection features: current limit/short-circuit protection and thermal shutdown
- Small 5-pin SOT-23 (IM5) package for compact board space
- Wide operating temperature range (typical -40°C to 125°C) for industrial/automotive applications
Note: exact numbers (dropout, quiescent current, max current) vary by lot and conditions; consult the datasheet for precise specs.

Package

The LP3985IM5-2.8 is supplied in a 5-pin SOT-23 package (TI package code "M5").

Pinout

The LP3985IM5-2.8 is supplied in a 5‑pin (SOT‑23‑5 / M5) package. Pin functions are:
- VIN – input supply
- VOUT – regulated 2.8 V output
- GND – ground
- EN (enable) – active‑high enable / shutdown control
- BYP/NR (bypass / reference) – noise‑reduction/reference bypass (or no‑connect on some fixed versions)
Function: a low‑dropout (LDO) linear regulator providing a fixed 2.8 V output with low quiescent current, internal current‑limit and thermal protection, intended for up to ~150 mA load (check the datasheet for exact dropout, Iq and full electrical characteristics).

Manufacturer

- Manufacturer: STMicroelectronics (ST).
- What kind of company: A global (multinational) semiconductor company that designs, manufactures, and sells a broad range of integrated circuits and electronic components, including analog ICs, MEMS/sensors, microcontrollers, and power devices. Headquarters: Geneva, Switzerland; publicly traded (NYSE: STM, Euronext: STM).

Application

Common application areas for LP3985IM5-2.8 (2.8 V fixed LDO):
- 2.8 V supply for portable/battery-powered devices (handhelds, wearables, toys)
- Power rail for microcontrollers, DSPs, sensors, and peripheral ICs in consumer electronics
- Analog/RF front-ends and mixed-signal circuits needing a clean 2.8 V rail
- Display/LCD driver circuits and embedded modules
- Regulated 2.8 V supply derived from higher-input sources (3–5 V) in compact designs
(Uses where a stable 2.8 V rail is required.)

Equivalent

Possible equivalents (2.8V fixed LDO, ~150 mA+):
- ST LP2985-2.8
- TI TLV70028
- TI LM1117-2.8 / LD1117-2.8
- AMS1117-2.8
- Microchip MIC5205-2.8
- Microchip MCP1700-2.8 (check availability)
Note: pinout, dropout, and quiescent current vary between parts; verify datasheets and package compatibility before substituting.