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AO3419

Name: AO3419
Rating: 4.7 (12 reviews)

MOSFET P-CH 20V 3.5A SOT23-3L

メーカー
Mfr。パート #AO3419
パッケージ
データシート AO3419 DataSheet
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仕様

Part Status	Active
Base Product Number	AO34
FET Type	P-Channel
Technology	MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss)	20 V
Current - Continuous Drain (Id) @ 25°C	3.5A (Ta)
Drive Voltage (Max Rds On, Min Rds On)	1.8V, 10V
Rds On (Max) @ Id, Vgs	85mOhm @ 3.5A, 10V
Vgs(th) (Max) @ Id	1.4V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	4.4 nC @ 4.5 V
Vgs (Max)	±12V
Input Capacitance (Ciss) (Max) @ Vds	400 pF @ 10 V
Power Dissipation (Max)	1.4W (Ta)
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Supplier Device Package	SOT-23-3
Package	3-SMD, SOT-23-3 Variant
Packaging	Cut Tape (CT), Tape & Reel (TR)

概要

Description

- AO3419 is a power MOSFET from Alpha & Omega Semiconductor (AOS). It refers to a family of N-channel, enhancement-mode switching transistors used in power electronics.
- Typical use: switching devices in DC-DC converters, synchronous buck/boost regulators, load switches, motor/drone power stages, and general high-current switching.
- Key ideas: designed for low on-resistance and fast switching to improve efficiency; available in various packages (specific Vds, Id, and Rds(on) vary by variant).
- What to check when selecting: VDS rating (should exceed your supply), continuous drain current (Id) rating, low Rds(on) for efficiency, gate charge (Qg) for drive strength, and packaging/thermal considerations. Always consult the exact datasheet for the specific AO3419 variant you’re using.
- Quick note: pinout and electrical characteristics depend on the package and version, so verify from the datasheet or distributor listing.

Package

AO3419 is packaged in a SOT-23-3 (SC-70-3) surface-mount package.

Pinout

AO3419 is a 3‑pin MOSFET (SOT‑23 package). The pins are Gate (G), Drain (D) and Source (S). Its function is as an enhancement‑mode MOSFET used for switching and power control (typically used as a low‑voltage, high‑speed load/high‑side or low‑side switch depending on circuit orientation).

Manufacturer

The AO3419 is manufactured by Alpha & Omega Semiconductor (AOS). AOS is a semiconductor company—primarily a designer and supplier (fabless) of power-management devices, notably power MOSFETs, analog power ICs and related components for consumer, computing, communications and automotive applications.

Application

AO3419 is a power N‑channel MOSFET used as a switch in PMICs and power paths. Common applications include:
- DC-DC converters (buck/boost)
- Synchronous rectification in switching regulators
- Load switches and power-path control for battery-powered devices
- Battery protection and charging circuits
- Motor drive and high-speed switching in portable electronics
- Solar charge controllers and USB power-management circuits

Equivalent

Equivalent parts depend on the exact AO3419 variant (Vds, Id, Rds(on), package). Please share the variant’s specs or your design constraints (e.g., voltage, current, Rds(on), package). With those, I can provide precise cross references (TI, Infineon, Vishay, etc.).