Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP7333-30SAG-7

Name: AP7333-30SAG-7
Brand: Diodes Incorporated
SKU: AP7333-30SAG-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AP7333-30SAG-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: AP7333-30SAG-7.pdf

Description:: IC REG LINEAR 3V 300MA SOT23

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:940

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AP7333-30SAG-7 from Diodes Incorporated is a 300mA fixed-output (3.0V) low-dropout linear regulator in SOT23 package, featuring 65µA quiescent current, 300mV dropout at full load, 65dB PSRR at 100Hz, and stable operation with 1µF ceramic output capacitor. It serves as a power supply rail for battery-powered peripherals requiring fast transient response and ultra-low standby power.

For engineers reviewing the AP7333-30SAG-7 datasheet, AP7333-30SAG-7 pinout, AP7333-30SAG-7 application, or AP7333-30SAG-7 equivalent, key selection criteria include dropout voltage under 300mA load, thermal shutdown threshold at 140°C, input voltage range (2V–6V), and compatibility with no-load stability requirements in portable systems.

Technical Context

The AP7333-30SAG-7 integrates a PMOS pass element, precision bandgap reference, error amplifier, and protection circuitry (current limit, short-circuit, thermal shutdown). Its architecture enables fast start-up (80µs) and excellent line/load transient response without external compensation.

It operates across –40°C to +85°C ambient, supports input voltages from 2V to 6V, and maintains ±2% output voltage accuracy over temperature and load. The device requires no minimum load and remains stable with 1µF X7R/X5R ceramic output capacitors (ESR 10–200mΩ).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.0V ±2% - ensures precise rail generation for 3.3V-tolerant I/O or 3.0V logic without external feedback.
Max Output Current	300mA continuous - sufficient for USB peripherals, sensor interfaces, and low-power microcontrollers.
Dropout Voltage	300mV typical at 300mA - enables regulation down to VIN = 3.3V, extending battery runtime in single-cell Li-ion or 3×AA systems.
Quiescent Current	65µA typical at full load - minimizes standby power loss in always-on subsystems like real-time clocks or wake-on-event circuits.
PSRR	65dB at 100Hz - suppresses low-frequency ripple from switching DC/DC converters upstream, improving analog sensor or RF circuit noise immunity.
Start-up Time	80µs - allows rapid power sequencing in multi-rail systems and supports dynamic power gating in portable devices.
Thermal Shutdown	140°C junction threshold with 15°C hysteresis - provides self-recovery protection during sustained overload or poor PCB thermal design.

Pinout & Package

SOT23-3 package (JEDEC TO-236AB), 1.3mm × 2.9mm footprint, 1.1mm height, RoHS-compliant lead-free finish, green molding compound.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN)	Input voltage supply	Accepts 2V–6V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin for EMI suppression and stability.
2 (OUT)	Regulated output	Delivers stable 3.0V; connects directly to load and 1µF ceramic output capacitor near pin for fast transient response.
3 (GND)	Ground reference	Common return path for IN and OUT; must be tied to low-impedance ground plane to minimize noise coupling and thermal resistance.

Key Features

Feature	Design Value
No minimum load requirement	Stable regulation at 0mA output - eliminates need for dummy loads in sleep-mode applications like remote controls or IoT sensors.
Fast transient response (0–300mA)	Controlled overshoot/undershoot during load steps - avoids brown-out resets in DSP or GSM baseband ICs with pulsed current profiles.
Short-circuit current limit	Clamps to ~100mA when VOUT < 200mV - prevents catastrophic failure during board-level shorts while allowing safe fault detection.
Current limit protection	Triggers at ~400–600mA - protects against sustained overload without latch-off, enabling graceful degradation in high-temp environments.
Ultra-low ESR capacitor support	Stable with 10–200mΩ ESR ceramics - permits use of compact, low-profile 0402/0603 MLCCs instead of larger tantalum or aluminum electrolytics.

Applications

Wireless LAN Modules

XDSL Router Power Rails

Use Scenario: Powering 2.4GHz/5GHz RF transceivers and baseband processors in mini-PCIe Wi-Fi cards.

IC Role / Device Role / Timing Role: Primary 3.0V LDO supplying RF front-end bias and digital core logic.

Use Value: 65dB PSRR at 100Hz rejects switching noise from upstream buck converters, preserving EVM and receiver sensitivity.

Use Scenario: Generating clean 3.0V supply for ADSL2+ line drivers and PHY interface logic.

IC Role / Device Role / Timing Role: Local post-regulator for analog line driver stages requiring low-noise, stable voltage.

Use Value: 300mV dropout enables operation from 3.3V intermediate rail, minimizing heat dissipation in space-constrained router chassis.

Battery-Powered Keyboards

USB Peripheral Controllers

Use Scenario: Supplying MCU and BLE radio in energy-harvesting or coin-cell–powered keyboards.

IC Role / Device Role / Timing Role: Always-on LDO maintaining RTC and wake-up circuitry during deep-sleep states.

Use Value: 65µA IQ extends shelf life of CR2032-powered devices beyond 2 years without compromising wake latency.

Use Scenario: Providing regulated 3.0V to USB 2.0 transceivers and hub controllers in docking stations.

IC Role / Device Role / Timing Role: Isolated power domain decoupling USB data lines from noisy system rails.

Use Value: 80µs start-up enables immediate enumeration after hot-plug detection, meeting USB suspend/resume timing budgets.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-output LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-3002E/TO	250mA max output, 1.6µA IQ, 600mV dropout at 250mA, SOT23-3	Lower IQ but lower current capability; less suitable for 300mA peak loads in wireless modules	Select when ultra-low standby power dominates over peak current demand (e.g., solar-powered sensors)
TPS73030DBVR	200mA max output, 170µA IQ, 170mV dropout at 200mA, SOT23-5	Higher IQ and smaller dropout, but 5-pin package adds routing complexity and lacks short-circuit clamping	Select when minimal dropout is critical and board area allows 5-pin layout; avoid where fault robustness is required

Compared with MCP1700-3002E/TO and TPS73030DBVR, the AP7333-30SAG-7 uniquely balances 300mA delivery, 65µA IQ, integrated short-circuit clamping (~100mA), and SOT23-3 simplicity-making it optimal for cost-sensitive, space-constrained, battery-operated designs needing both performance and protection.

Availability

AP7333-30SAG-7 is available at Aetrix Electronics and suitable for wireless LAN modules, XDSL router power rails, and battery-powered keyboards requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.

Supply support for AP7333-30SAG-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The AP7333 belongs to Diodes' low-quiescent-current LDO family, engineered specifically for portable and battery-powered applications demanding ultra-low standby power, fast transient response, and robust fault protection in minimal footprint.

FAQ

What is the recommended input and output capacitor configuration for AP7333-30SAG-7?

A 1µF X7R ceramic capacitor is required between IN and GND, and another 1µF X7R/X5R ceramic capacitor between OUT and GND. Both must be placed within 2mm of their respective pins using short, wide traces. Input capacitance may be increased without limit; output capacitance can range from 1µF to 4.7µF to improve transient response, provided ESR stays between 10mΩ and 200mΩ.

Does AP7333-30SAG-7 require a minimum load current to maintain regulation?

No. The AP7333-30SAG-7 is designed for no-load stability and maintains regulation across 0mA to 300mA output current. This eliminates the need for bleed resistors or dummy loads, reducing power waste in always-on or intermittently active circuits such as real-time clocks or wake-on-LAN controllers.

How does the thermal shutdown protection behave under sustained overload?

When junction temperature reaches ~140°C, the output disables; it re-enables once temperature falls to ~125°C due to 15°C hysteresis. Under continuous overload, this causes controlled on/off cycling-limiting average power dissipation and preventing permanent damage. Thermal resistance is 207°C/W for SOT23 on standard FR-4 PCBs.

Can AP7333-30SAG-7 be used with input voltages below 2.0V?

No. The absolute minimum input voltage is 2.0V per the Recommended Operating Conditions table. Operation below 2.0V risks loss of regulation, increased dropout, or erratic behavior. For sub-2V inputs, consider alternative regulators such as the AP2204 series or specialized ultra-low-VIN LDOs with verified 1.4V start-up capability.

AP7333-30SAG-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.55V @ 300mA

Current - Output:: 300mA

Current - Quiescent (Iq):: 75 µA

Current - Supply (Max):: 85 µA

PSRR:: 65dB (100Hz)

Control Features:: -

Protection Features:: Over Current, Over Temperature, Short Circuit

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

AP7333-30SAG-7 FAQ

1.How can I place an order for AP7333-30SAG-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7333-30SAG-7 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 AP7333-30SAG-7 reliable?

The price and inventory of AP7333-30SAG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7333-30SAG-7 is usually 5 days.

3.What payment methods are accepted for AP7333-30SAG-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7333-30SAG-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7333-30SAG-7?

AP7333-30SAG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7333-30SAG-7 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 AP7333-30SAG-7?

For technical support, including AP7333-30SAG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7333-30SAG-7 requirements.

6.How does Aetrix verify that AP7333-30SAG-7 is sourced from the original manufacturer or authorized distributors?

All AP7333-30SAG-7 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 AP7333-30SAG-7 meets industry standards.

7.What is the process for return or replacement of AP7333-30SAG-7?

All AP7333-30SAG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7333-30SAG-7, 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 AP7333-30SAG-7 part is unused and in its original packaging.

Return procedure for AP7333-30SAG-7:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …