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

Diodes Incorporated AP7333-10SRG-7

Name: AP7333-10SRG-7
Brand: Diodes Incorporated
SKU: AP7333-10SRG-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7333-10SRG-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP7333-10SRG-7.pdf

Description:: IC REG LINEAR 1V 300MA SOT23R

Quantity:: RFQ Add To RFQ list

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Inventory:1,603

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Product details

Overview

AP7333-10SRG-7 from Diodes Incorporated is a 300mA, fixed 1.0V output, low dropout linear regulator in SOT23R package, featuring 65µA quiescent current, 300mV dropout at full load, and stable operation with 1µF ceramic output capacitor. It serves as a primary power supply for ultra-low-power microcontrollers and RF front-ends in portable electronics.

For engineers reviewing the AP7333-10SRG-7 datasheet, AP7333-10SRG-7 pinout, AP7333-10SRG-7 application, or AP7333-10SRG-7 equivalent, key selection criteria include dropout voltage at 300mA, PSRR at 100Hz, thermal shutdown threshold, start-up time under load, and compatibility with low-ESR ceramic capacitors in space-constrained layouts.

Technical Context

The AP7333-10SRG-7 integrates a PMOS pass transistor, bandgap reference, error amplifier, and protection circuitry (current limit, short-circuit, thermal shutdown) in a single die. Its architecture enables fast transient response without external compensation due to internal pole-zero cancellation optimized for 1µF–4.7µF ceramic output capacitors.

It operates across 2V–6V input while maintaining ±2% output accuracy from –40°C to +85°C ambient, with line regulation of 0.01–0.20%/V and load regulation of ±0.6% over 1–300mA. The 80µs start-up time supports rapid wake-from-standby in GSM/TDMA baseband systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.0V ±2% over –40°C to +85°C - ensures stable core voltage for 1.0V logic domains
Max Output Current	300mA continuous - sufficient for ARM Cortex-M0+ MCUs with integrated peripherals active
Quiescent Current	65µA typical at full load - enables >1-year battery life in coin-cell-powered IoT sensors
Dropout Voltage	300mV typical at 300mA - allows operation down to 1.3V input, critical for single-cell LiFePO₄ or alkaline systems
PSRR	65dB typical at 100Hz - suppresses low-frequency switching noise from DC/DC converters upstream
Start-up Time	80µs with 300mA load - meets real-time wake-up timing for Bluetooth LE controllers
Thermal Shutdown	140°C junction threshold with 15°C hysteresis - prevents latch-up during sustained high-power bursts

Pinout & Package

SOT23R package: 3-pin surface-mount, RoHS-compliant, green molding compound, 230°C/W junction-to-ambient thermal resistance.

Pin/Terminal	Circuit Role	Design Meaning
IN (Pin 3)	Input voltage supply	Accepts 2V–6V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin for EMI suppression and stability
OUT (Pin 2)	Regulated output	Delivers fixed 1.0V; stable with 1µF–4.7µF X7R/X5R ceramic capacitors; no minimum load required
GND (Pin 1)	Power ground reference	Common return path for IN and OUT; must connect to low-impedance PCB ground plane to maintain PSRR and transient response

Key Features

Feature	Design Value
Ultra-low IQ with load	65µA at 300mA enables >10-year shelf life in always-on sensor nodes powered by CR2032
Fast transient recovery	Sub-200µs settling after 0→300mA step - maintains voltage within ±3% for DSP burst-mode operation
Low-ESR capacitor support	Stable with 10–200mΩ ESR ceramics - eliminates need for bulky tantalum or electrolytic capacitors
Integrated fault protection	Current limit (400–600mA), short-circuit clamp (100mA), and thermal shutdown (140°C) - removes need for external protection ICs

Applications

Wireless Sensor Node

GSM Baseband Power

Use Scenario: Battery-powered Zigbee/Thread endpoint with sub-100µA sleep current and 300mA transmit bursts.

IC Role / Device Role / Timing Role: Primary 1.0V LDO supplying MCU core and RF transceiver during active transmission.

Use Value: 80µs start-up and fast transient response prevent brown-out during RF PA enable; 65µA IQ extends CR2032 battery life beyond 3 years.

Use Scenario: TDMA-based GSM handset baseband section requiring rapid power cycling between receive and transmit slots.

IC Role / Device Role / Timing Role: Dedicated 1.0V supply for digital baseband ASIC with strict 100µs wake-up window.

Use Value: 65dB PSRR at 100Hz rejects noise from buck converter feeding analog sections; 300mV dropout enables use with aging single-cell Li-ion.

USB-C Peripheral

Industrial Controller I/O

Use Scenario: USB-C powered smart dock with embedded MCU, display interface, and USB hub - operating from 5V VBUS with tight thermal constraints.

IC Role / Device Role / Timing Role: Local 1.0V rail for USB 3.0 PHY logic and display timing controller.

Use Value: SOT23R package offers 230°C/W θJA for reliable operation in enclosed enclosures; thermal hysteresis prevents oscillation during sustained 250mA loads.

Use Scenario: DIN-rail mounted PLC module with isolated 24V input, requiring clean 1.0V supply for FPGA configuration memory and JTAG interface.

IC Role / Device Role / Timing Role: Post-regulator for isolated DC/DC output, delivering noise-immune 1.0V to sensitive configuration circuitry.

Use Value: ±2% output accuracy ensures reliable FPGA bitstream loading; 65dB PSRR isolates memory from switching noise on main 3.3V rail.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-1002E/TT (Microchip)	250mA max output, 1.6µA IQ, 600mV dropout at 250mA	Limited to ultra-low-current applications; insufficient for 300mA GSM bursts	Select only when IQ < 2µA is mandatory and peak load ≤250mA
TPS7A0510PDBVR (TI)	200mA max output, 25µA IQ, 170mV dropout at 200mA, 1.5V–6V input	Lower dropout but lower current rating; not suitable for sustained 300mA loads	Prefer for space-constrained designs needing <200mA with tighter dropout, but verify thermal derating

Compared with MCP1700T-1002E/TT and TPS7A0510PDBVR, the AP7333-10SRG-7 uniquely delivers 300mA output with 65µA IQ and 300mV dropout - enabling direct replacement of legacy 1.0V regulators in battery-powered RF modules without redesigning thermal layout or output capacitance.

Availability

AP7333-10SRG-7 is available at Aetrix Electronics and suitable for wireless sensor nodes, GSM baseband subsystems, USB-C peripheral power management, and industrial controller I/O requiring stable component supply across multi-year production cycles.

Supply support for AP7333-10SRG-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 series belongs to Diodes' low-quiescent-current LDO portfolio, designed specifically for battery-powered and energy-harvesting applications where extended runtime and fast dynamic response are critical system requirements.

FAQ

What is the minimum input voltage required for AP7333-10SRG-7 to regulate 1.0V output at 300mA?

The AP7333-10SRG-7 requires a minimum input voltage of 1.3V to maintain regulation at 300mA, based on its typical 300mV dropout voltage. At higher temperatures or worst-case process corners, the dropout may reach 550mV, so 1.55V input is recommended for guaranteed operation across –40°C to +85°C ambient.

Can AP7333-10SRG-7 operate without an output capacitor?

No - the AP7333-10SRG-7 requires a minimum 1µF ceramic output capacitor for stability and transient response. Operation without it causes oscillation and unregulated output. The device is optimized for 1µF–4.7µF X7R/X5R ceramics with 10–200mΩ ESR; tantalum or aluminum electrolytics are not recommended due to ESR mismatch.

Does AP7333-10SRG-7 support reverse polarity protection?

No - the AP7333-10SRG-7 lacks built-in reverse polarity protection. Applying negative voltage to the IN pin exceeds the Absolute Maximum Rating of –0.3V and may cause permanent damage. External protection, such as a series Schottky diode or dedicated reverse-voltage IC, is required in systems prone to incorrect battery insertion or field wiring errors.

How does thermal shutdown behave under sustained overload conditions?

When junction temperature reaches ~140°C, the AP7333-10SRG-7 disables the output and enters thermal shutdown. It remains off until the junction cools to ~125°C (15°C hysteresis), then re-enables. Under continuous overload, this results in duty-cycled operation - measurable as periodic output voltage collapse and recovery - which limits average power dissipation and prevents catastrophic failure.

AP7333-10SRG-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):: 1V

Voltage - Output (Max):: -

Voltage Dropout (Max):: -

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:: SOT23R

AP7333-10SRG-7 FAQ

1.How can I place an order for AP7333-10SRG-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7333-10SRG-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 AP7333-10SRG-7 reliable?

The price and inventory of AP7333-10SRG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7333-10SRG-7 is usually 5 days.

3.What payment methods are accepted for AP7333-10SRG-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7333-10SRG-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7333-10SRG-7?

AP7333-10SRG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7333-10SRG-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 AP7333-10SRG-7?

For technical support, including AP7333-10SRG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7333-10SRG-7 requirements.

6.How does Aetrix verify that AP7333-10SRG-7 is sourced from the original manufacturer or authorized distributors?

All AP7333-10SRG-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 AP7333-10SRG-7 meets industry standards.

7.What is the process for return or replacement of AP7333-10SRG-7?

All AP7333-10SRG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7333-10SRG-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 AP7333-10SRG-7 part is unused and in its original packaging.

Return procedure for AP7333-10SRG-7:

1.Submit a request within 90 days.

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

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