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REG1117A/2K5

Name: REG1117A/2K5
Rating: 4.7 (12 reviews)

IC REG LINEAR POS ADJ 1A SOT223

제조업체
Mfr.부분 #REG1117A/2K5
패키지 SOT223-4
데이터시트 REG1117A/2K5 DataSheet
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사양

Package	Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus	Active
OutputConfiguration	Positive
OutputType	Adjustable
NumberofRegulators	1
Voltage-Input(Max)	15V
Voltage-Output(Min/Fixed)	1.25V
Voltage-Output(Max)	13.5V
VoltageDropout(Max)	1.55V @ 1A
Current-Output	1A
Current-Quiescent(Iq)	10 mA
PSRR	62dB (120Hz)
ProtectionFeatures	Over Current, Over Temperature
OperatingTemperature	-40°C ~ 125°C
MountingType	Surface Mount
Package/Case	TO-261-4, TO-261AA

개요

Description

Introduction: REG1117A/2K5 is a fixed-output low-dropout regulator from the LM1117 family. The “2K5” variant provides a fixed 2.5 V output (REG1117A-2.5).
Key points
- Output: fixed 2.5 V; typical output current up to ~0.8–1 A with proper heat sinking.
- Input: up to about 15 V; dropout around 1 V at high load.
- Quiescent current: a few milliamps (typical ~5 mA).
- Stability: requires an output capacitor (typically 10 µF, low ESR) and an input capacitor (10 µF or more); place close to the regulator.
- Pinout (TO-220/front view, left to right): Ground, Vout, Vin (for fixed versions; varies by package; check datasheet).
- Thermal: dissipation = (Vin − Vout) × Iout; heat sinking may be needed at higher Vin or load.
- Use: simple 2.5 V rail for logic, sensors, or as a building block in power rails.
- Alternatives: other LM1117 variants (e.g., 3.3 V, 5 V) or switching regulators for efficiency.

Features

REG1117A/2K5 is a fixed 2.5 V low-dropout regulator (1 A class). Key features:
- Output: fixed 2.5 V (REG1117A/2K5)
- Max load current: up to ~1 A
- Dropout voltage: typically about 1.2–1.3 V at 1 A
- Input voltage range: up to 15 V (max)
- Protection: current limit and thermal shutdown
- Stability: requires output capacitor (low ESR, ≥10 µF) for stability; input capacitor recommended (≈10 µF)
- Quiescent current: ~5 mA (typical)
- Packaging: available in TO-220, SOT-223, and similar packages
- Operating temp: generally suitable for -40°C to 125°C (industrial/high temp variants)

Package

Typically SMD SOT-223-3 for REG1117A/2K5; through-hole TO-220-3 versions are also available.

Pinout

3 pins. It is a fixed 2.5 V low-dropout regulator (LDO). Pinout (typical SOT-223/TO-220): Pin 1 Ground, Pin 2 Output (Vout), Pin 3 Input (Vin).

Manufacturer

- Manufacturer: There isn’t a single manufacturer for REG1117A/2K5. It’s a generic fixed 2.5V LDO regulator in the 1117 family, produced by many vendors (e.g., Texas Instruments, STMicroelectronics, On Semiconductor, Rohm, RichTek, etc.).
- What kind of company: A semiconductor company that designs and manufactures integrated circuits and electronic components (analog devices, voltage regulators, power management ICs, etc.).

Application

REG1117A/2K5 is a fixed 2.5 V, low-dropout linear regulator. Applications: generating a stable 2.5 V supply for digital/analog ICs (microcontrollers, RAM/flash, ADC/DAC, op-amps, PLLs), powering embedded systems in consumer electronics, telecom and instrumentation, and deriving 2.5 V from higher rails in battery-powered equipment. Suitable where a compact, simple 2.5 V rail is needed with modest load currents (around 1 A).

Equivalent

REG1117A/2K5 is a 2.5 V fixed-output 1 A LDO. Drop-in equivalents include:
- AMS1117-2.5
- LM1117-2.5 (TI)
- LD1117V25 (ST)
- AP1117-2.5 (Diodes Inc)
- NCP1117-2.5 (Onsemi)
Check package and pinout, as minor variations exist; ensure adequate heat sinking for your load.