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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Alpha & Omega Semiconductor Inc. AONS21113

Name: AONS21113
Brand: Alpha & Omega Semiconductor Inc.
SKU: AONS21113
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AONS21113

Manufacturer:: Alpha & Omega Semiconductor Inc.

Category:: FETs, MOSFETs

Package:: 8-PowerSMD, Flat Leads

Datasheet:: AONS21113.pdf

Description:: P

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Product details

Overview

AONS21113 from Alpha & Omega Semiconductor is a -20V, 70A P-channel MOSFET in DFN5x6 package with R_DS(ON) < 2.2 mΩ at V_GS = -10 V, optimized for high-current load switching and battery protection circuits in notebook AC-in and portable power systems.

For engineers reviewing the AONS21113 datasheet, pinout, applications, or equivalent options, key selection criteria include its ultra-low on-resistance at low gate drive (-4.5 V), 100% UIS-tested ruggedness, and thermal performance validated up to T_J = 150°C in compact DFN packaging.

Technical Context

This P-channel MOSFET uses advanced trench technology to achieve sub-2.5 mΩ R_DS(ON) at -10 V gate drive while maintaining robust unclamped inductive switching (UIS) capability (E_AS = 281 mJ) and low gate charge (Q_g(10 V) = 390–550 nC). Its body diode exhibits V_SD = -0.6 to -1.0 V at -1 A and fast reverse recovery (t_rr = 68 ns, Q_rr = 280 nC).

The device is rated for continuous drain current of -70 A at T_C = 100°C, with junction-to-case thermal resistance R_θJC = 0.9°C/W and maximum junction temperature of 150°C. It supports operation across -55°C to +150°C storage and operating range, and features ±12 V gate-source voltage rating.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	-20 V - Maximum drain-source blocking voltage for low-voltage P-channel load switch applications
I_D (T_C=100°C)	-70 A - Continuous current handling at case temperature 100°C, enabling high-power density designs
R_DS(ON) (V_GS=-10 V)	< 2.2 mΩ - Enables <140 mW conduction loss at 70 A, critical for thermally constrained notebooks
Q_g(10 V)	390–550 nC - Gate charge defining switching energy and driver sizing for efficient PWM control
E_AS	281 mJ - UIS-rated avalanche energy ensures reliability under inductive load transients without snubbers
R_θJC	0.9°C/W - Low junction-to-case thermal resistance supports direct heatsink mounting for high-PD operation
V_GS(th)	-0.3 to -1.1 V - Threshold voltage range enabling reliable turn-on with logic-level gate drivers down to -2.5 V

Pinout & Package

Package: DFN5x6 (5 mm × 6 mm, 1.0 mm height, exposed drain pad), bottom-side thermal pad, RoHS and halogen-free compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 7, 8	Drain (D)	Parallel-connected drain terminals tied to exposed thermal pad - primary current path and thermal interface
5	Source (S)	Main source connection; used as return path in high-side load switch configurations
6	Gate (G)	Control terminal requiring negative gate drive relative to source; low input capacitance (C_iss = 18.7 nF) eases driving

Key Features

Feature	Design Value
100% UIS tested	Guarantees avalanche ruggedness per JEDEC JESD24-11, eliminating need for external clamping in inductive load switching
Low R_DS(ON) at -4.5 V	< 2.5 mΩ enables full-load operation with standard logic-level controllers, reducing gate drive complexity
Exposed drain thermal pad	Enables direct thermal coupling to PCB copper or heatsink, supporting >138 W power dissipation at T_C = 25°C
Fast body diode recovery	t_rr = 68 ns and Q_rr = 280 nC minimize switching losses and EMI in synchronous rectification or bidirectional battery paths

Applications

Notebook AC-in Load Switch	Battery Protection Circuit
Use Scenario: High-side power switch between AC adapter input and system rail in ultraportable notebooks. IC Role / Device Role / Timing Role: P-channel high-side load switch controlling power delivery and enabling hot-plug detection. Use Value: Ultra-low R_DS(ON) minimizes voltage drop and heat generation during sustained 70 A charging currents.	Use Scenario: Bidirectional current path in Li-ion battery charge/discharge management with overcurrent and short-circuit protection. IC Role / Device Role / Timing Role: Primary discharge FET in protection IC-controlled battery pack, conducting during discharge and blocking during charge cutoff. Use Value: 100% UIS testing ensures survival during sudden load dumps or cell reversal events without derating.
USB-C Power Delivery Sink	Industrial 24V DC Power Rail Switch
Use Scenario: Input power switch for USB-C PD sink devices requiring programmable 5–20 V input with tight thermal constraints. IC Role / Device Role / Timing Role: High-side enable switch placed upstream of buck converter, controlled by PD controller. Use Value: R_DS(ON) < 3.6 mΩ at V_GS = -2.5 V allows direct control from PD controller GPIOs without level-shifting.	Use Scenario: Remote ON/OFF control of 24 V industrial subsystems such as sensors, actuators, or communication modules. IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relays, providing fast, bounce-free switching with low standby loss. Use Value: Junction-to-case thermal resistance of 0.9°C/W enables reliable operation at 40 A continuous with minimal heatsinking.

Notebook AC-in Load Switch

Battery Protection Circuit

Use Scenario: High-side power switch between AC adapter input and system rail in ultraportable notebooks.

IC Role / Device Role / Timing Role: P-channel high-side load switch controlling power delivery and enabling hot-plug detection.

Use Value: Ultra-low R_DS(ON) minimizes voltage drop and heat generation during sustained 70 A charging currents.

Use Scenario: Bidirectional current path in Li-ion battery charge/discharge management with overcurrent and short-circuit protection.

IC Role / Device Role / Timing Role: Primary discharge FET in protection IC-controlled battery pack, conducting during discharge and blocking during charge cutoff.

Use Value: 100% UIS testing ensures survival during sudden load dumps or cell reversal events without derating.

USB-C Power Delivery Sink

Industrial 24V DC Power Rail Switch

Use Scenario: Input power switch for USB-C PD sink devices requiring programmable 5–20 V input with tight thermal constraints.

IC Role / Device Role / Timing Role: High-side enable switch placed upstream of buck converter, controlled by PD controller.

Use Value: R_DS(ON) < 3.6 mΩ at V_GS = -2.5 V allows direct control from PD controller GPIOs without level-shifting.

Use Scenario: Remote ON/OFF control of 24 V industrial subsystems such as sensors, actuators, or communication modules.

IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relays, providing fast, bounce-free switching with low standby loss.

Use Value: Junction-to-case thermal resistance of 0.9°C/W enables reliable operation at 40 A continuous with minimal heatsinking.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRF4905PbF	R_DS(ON) = 20 mΩ @ -10 V; TO-220 package; higher R_DS(ON), larger footprint, no UIS rating	Suitable for lower-current, non-ruggedized 24 V industrial switches where thermal mass compensates for higher loss	Select when legacy TO-220 layout exists and avalanche immunity is not required.
SiR466DP	R_DS(ON) = 2.0 mΩ @ -10 V; same DFN5x6 package; slightly lower Q_g but no 100% UIS test documentation	Better suited for high-frequency synchronous rectification where Q_g dominates efficiency	Prefer when gate drive loss is critical and transient ruggedness can be managed externally.

Compared with IRF4905PbF and SiR466DP, the AONS21113 uniquely combines ultra-low on-resistance, verified UIS ruggedness, and compact DFN5x6 packaging-making it optimal for space-constrained, high-reliability notebook and battery protection designs where both conduction loss and transient survivability matter.

Availability

AONS21113 is available at Aetrix Electronics and suitable for notebook AC-in load switching, battery protection charge/discharge, and USB-C PD sink power management requiring stable component supply and long-term production continuity.

Supply support for AONS21113 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Alpha & Omega Semiconductor (AOS) is a fabless power semiconductor company specializing in high-efficiency MOSFETs, IGBTs, and power ICs for computing, consumer, and industrial markets.

The AONS21113 belongs to AOS's advanced trench P-channel MOSFET product line, engineered specifically for high-current, low-voltage load switching applications demanding minimal conduction loss and proven avalanche reliability.

FAQ

What is the maximum continuous drain current rating for AONS21113 at T_C = 100°C?

The AONS21113 is rated for -70 A continuous drain current at case temperature T_C = 100°C, as specified in the Absolute Maximum Ratings table. This rating reflects package-limited current capacity and assumes proper thermal management via the exposed drain pad. At lower case temperatures, the device supports higher current-up to -75 A at T_C = 25°C.

Does AONS21113 support gate drive from standard 3.3 V or 5 V logic controllers?

Yes, the AONS21113 supports gate drive from 3.3 V and 5 V logic controllers due to its low gate threshold voltage (V_GS(th) = -0.3 to -1.1 V) and guaranteed R_DS(ON) < 2.5 mΩ at V_GS = -4.5 V. However, full -70 A conduction requires V_GS ≤ -10 V; for partial-load operation with logic-level drive, design margins must account for increased on-resistance above -2.5 V.

Is AONS21113 qualified for automotive applications?

No, the AONS21113 is not AEC-Q101 qualified and is not intended for automotive use. Its datasheet explicitly excludes life-support and safety-critical applications, and no automotive-grade screening, qualification reports, or extended temperature validation beyond -55°C to +150°C are provided. For automotive load switching, AOS offers separate AEC-Q101 qualified P-channel MOSFETs.

What thermal performance can be expected from AONS21113 in a standard 2-layer PCB layout?

In a standard 1 in² FR-4 board with 2 oz. copper (per JEDEC JESD51-3), the AONS21113 achieves R_θJA = 50°C/W. This allows ~6.2 W steady-state power dissipation at T_A = 25°C before reaching T_J = 150°C. For higher power, the exposed drain pad must be connected to internal/external copper planes to leverage its 0.9°C/W R_θJC and reduce thermal bottleneck.

How does the body diode performance of AONS21113 compare to typical P-channel MOSFETs?

The AONS21113 body diode delivers V_SD = -0.6 to -1.0 V at -1 A and exhibits t_rr = 68 ns with Q_rr = 280 nC-significantly faster and lower-loss than conventional P-channel MOSFETs. This enables efficient bidirectional current flow in battery protection and reduces switching losses in synchronous rectifier topologies where the AONS21113 operates in reverse conduction mode.

AONS21113 Specifications

Product attributes: Attribute value

Manufacturer:: Alpha & Omega Semiconductor Inc.

Series:: -

Package/Case:: 8-PowerSMD, Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 44A (Ta), 70A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 2.5V, 10V

Rds On (Max) @ Id, Vgs:: 2.2mOhm @ 20A, 10V

Vgs(th) (Max) @ Id:: 1.1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 550 nC @ 10 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 18700 pF @ 10 V

FET Feature:: -

Power Dissipation (Max):: 6.2W (Ta), 138W (Tc)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-DFN (5x6)

AONS21113 FAQ

1.How can I place an order for AONS21113 through Aetrix?

Please submit a Request for Quotation (RFQ) for AONS21113 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AONS21113 reliable?

The price and inventory of AONS21113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AONS21113 is usually 5 days.

3.What payment methods are accepted for AONS21113?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AONS21113 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AONS21113?

AONS21113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AONS21113 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AONS21113?

For technical support, including AONS21113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AONS21113 requirements.

6.How does Aetrix verify that AONS21113 is sourced from the original manufacturer or authorized distributors?

All AONS21113 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AONS21113 meets industry standards.

7.What is the process for return or replacement of AONS21113?

All AONS21113 units undergo pre-shipment inspection (PSI). If there is an issue with AONS21113, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AONS21113 part is unused and in its original packaging.

Return procedure for AONS21113:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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