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L78L09ACZ

Name: L78L09ACZ
Rating: 4.7 (12 reviews)

IC REG LINEAR 9V 100MA TO92-3

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Mfr。パート #L78L09ACZ
パッケージ TO-92-3
データシート
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仕様

Package	Bulk
ProductStatus	Obsolete
OutputConfiguration	Positive
OutputType	Fixed
NumberofRegulators	1
Voltage-Input(Max)	30V
Voltage-Output(Min/Fixed)	9V
Current-Output	100mA
Current-Quiescent(Iq)	5.5 mA
Current-Supply(Max)	6 mA
PSRR	44dB (120Hz)
ProtectionFeatures	Over Current, Over Temperature, Short Circuit
OperatingTemperature	0°C ~ 125°C
MountingType	Through Hole
Package/Case	TO-226-3, TO-92-3 (TO-226AA)

概要

Description

L78L09ACZ is a fixed positive linear voltage regulator from the 78L family, providing a stable +9 V output from a higher DC input. It is a low‑power device (about 100 mA max) with built‑in current limit and thermal shutdown for protection. Typical input voltage can be up to ~20 V, and dropout at 100 mA is roughly 1.5–2 V (varies by device). Output tolerance is about ±5%. It’s used to generate a small, stable 9 V supply for microcontrollers, sensors, and other analog/digital circuitry.
Recommended capacitors: place an input bypass (≈0.33 µF to 1 µF) and an output bypass (≈0.1 µF to 1 µF) per the datasheet for stability; larger electrolytics may be used for better transient handling.
Package suffix ACZ denotes a specific package variant (e.g., TO‑92/SOT‑89 style) from the manufacturer. For exact electrical specs and pinout, consult the specific L78L09ACZ datasheet from your supplier.

Features

L78L09ACZ features (concise):
- 9V fixed output
- Up to 100 mA output current
- Input voltage range: 11–20 V (min ~11 V to regulate)
- Dropout about 2 V at 100 mA
- Three-terminal positive regulator in TO-92 package (ACZ)
- Built-in protection: current limit, thermal/shutdown protection
- Short-circuit protection; relatively low quiescent current
- Simple regulator suitable for basic power-supply apps (external capacitors recommended for stability)

Package

The L78L09ACZ is supplied in a TO-92 3‑lead plastic through‑hole (transistor-style) package.

Pinout

The L78L09ACZ is a 3‑pin positive fixed 9 V linear regulator. Pin functions:
- Pin 1: VIN (input)
- Pin 2: GND (ground/common)
- Pin 3: VOUT (regulated 9 V output)
Typical TO‑92/SOT‑89 orientation (flat face toward you, leads down): left = VIN, middle = GND, right = VOUT. Use recommended input/output decoupling capacitors per the datasheet (e.g., 0.33 µF on input, 0.1 µF on output).

Manufacturer

Manufacturer: STMicroelectronics.
What kind of company: STMicroelectronics is a multinational semiconductor company (Franco‑Italian) that designs, manufactures and supplies integrated circuits, discrete semiconductors and sensors for automotive, industrial, consumer and communications markets.

Application

Applications of L78L09ACZ:
- General-purpose fixed 9V regulator for low-current circuits
- Power rail for microcontroller boards (PIC/AVR), sensors, and data loggers
- Small consumer electronics, instrumentation, and educational kits
- Prototyping or replacing a 9V regulator in loads up to ~100 mA
- Adapter- or battery-powered devices needing a simple 9V supply (with proper input/output capacitors)

Equivalent

Common equivalents to L78L09ACZ (9V, ~100 mA; similar pinout in 78xx family):
- LM78L09 / LM7809 (TI/National)
- MC7809 (Motorola)
- KA7809 (Renesas/Sanyo)
- NTE78L09 (NTE cross-reference)
Note: L78L09 is ~100 mA; LM7809/MC7809 are typically 1 A. Check current rating and package for your design.