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

Diodes Incorporated AP7313-20SRG-7

Name: AP7313-20SRG-7
Brand: Diodes Incorporated
SKU: AP7313-20SRG-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7313-20SRG-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP7313-20SRG-7.pdf

Description:: IC REG LINEAR 2V 150MA SOT23R-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7313-20SRG-7 from Diodes Incorporated is a 150mA fixed-output (2.0V) low-dropout linear regulator in SOT23R package, featuring 65µA quiescent current, 150mV dropout at full load, and 65dB PSRR at 100Hz - designed for battery-powered portable devices requiring stable low-power voltage regulation.

For engineers reviewing the AP7313-20SRG-7 datasheet, AP7313-20SRG-7 pinout, AP7313-20SRG-7 application, or AP7313-20SRG-7 equivalent, key selection criteria include ultra-low IQ across input range (2–6V), fast 80µs startup, stability with 1µF ceramic output capacitor, and integrated thermal shutdown, current limit, and short-circuit protection.

Technical Context

The AP7313-20SRG-7 implements a PMOS pass transistor architecture enabling low dropout and minimal quiescent current across load (0–150mA) and input (2–6V) ranges. Its bandgap reference and error amplifier deliver ±2% output accuracy over –40°C to +85°C ambient.

Transient response is optimized via internal compensation supporting fast load steps (0→150mA) with controlled undershoot/overshoot, while PSRR of 65dB at 100Hz and >40dB up to 10kHz suppresses ripple from noisy DC-DC stages or shared power rails.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.0V ±2% - ensures precise biasing for 2.0V I/O domains or low-voltage microcontrollers.
Max Output Current	150mA continuous - sufficient for single-core MCUs, sensors, or RF front-end ICs in portable systems.
Quiescent Current	65µA typical at 150mA - enables multi-year battery life in always-on sensor nodes or standby circuits.
Dropout Voltage	150mV typical at 150mA - allows operation down to 2.15V input when regulating 2.0V, maximizing usable battery voltage range.
PSRR	65dB at 100Hz - attenuates low-frequency switching noise from upstream converters, critical for analog/RF subsystems.
Startup Time	80µs - supports rapid wake-from-sleep transitions in GSM/TDMA baseband power sequencing.
Stability	With ≥1µF X5R/X7R ceramic capacitor - eliminates need for bulky tantalum or electrolytic output caps, reducing board area and cost.

Pinout & Package

The AP7313-20SRG-7 is housed in a RoHS-compliant, lead-free SOT23R package (2.9mm × 1.6mm × 1.1mm), optimized for thermal performance (θ_JA = 230°C/W) on standard FR-4 PCBs with minimum pad layout per AP02001.

Pin/Terminal	Circuit Role	Design Meaning
1 (GND)	Ground reference	Low-impedance return path for internal bandgap, error amp, and protection circuitry; must be connected to solid ground plane.
2 (OUT)	Regulated output	Delivers stable 2.0V; requires local 1µF ceramic capacitor to GND for transient stability and EMI suppression.
3 (IN)	Input supply	Accepts 2–6V; requires ≥1µF ceramic bypass capacitor to GND near pin to suppress high-frequency noise and prevent oscillation.

Key Features

Feature	Design Value
Ultra-low quiescent current	65µA across full 2–6V input and 0–150mA load range - extends battery runtime without sacrificing regulation accuracy.
Fast transient response	Controlled undershoot/overshoot during 0→150mA load steps - maintains voltage integrity for DSPs and GSM baseband ICs with burst-mode operation.
Integrated protection	Thermal shutdown (140°C trip), current limit (~300mA), and short-circuit clamp (~50mA) - eliminates need for external fault management circuitry.
No minimum load requirement	Stable regulation at 0mA output - simplifies design for intermittent-load applications like IoT wake-on-event sensors.

Applications

Portable Medical Sensors

GSM Baseband Power

Use Scenario: Wearable ECG patch operating from coin-cell battery with intermittent signal acquisition every 5 seconds.

IC Role / Device Role / Timing Role: Primary 2.0V supply for ultra-low-power ADC and BLE radio during active measurement bursts.

Use Value: 65µA IQ and 80µs startup enable >3-year battery life while meeting sub-100µs wake-up timing for real-time arrhythmia detection.

Use Scenario: Power rail for TDMA-based GSM transceiver IC requiring rapid on/off cycling between transmit/receive slots.

IC Role / Device Role / Timing Role: Local LDO delivering clean 2.0V to RF synthesizer and modulator during 577µs transmit bursts.

Use Value: Fast transient response prevents voltage droop below 1.9V during 100mA load steps, avoiding TX frequency drift and bit errors.

Industrial Handheld Terminals

USB-Powered Peripherals

Use Scenario: Rugged barcode scanner powered by Li-ion battery with backlight and laser driver sharing same 2.0V rail.

IC Role / Device Role / Timing Role: Main 2.0V regulator supplying MCU, display controller, and optical sensor interface.

Use Value: 150mV dropout enables operation until battery reaches 2.15V, extending usable charge by ~12% versus higher-dropout alternatives.

Use Scenario: USB 2.0 audio adapter drawing peak 120mA from 5V VBUS via internal DC-DC converter feeding AP7313-20SRG-7.

IC Role / Device Role / Timing Role: Post-regulator cleaning switched-converter output for sensitive DAC and headphone amplifier.

Use Value: 65dB PSRR at 100Hz suppresses 100kHz–1MHz switching artifacts, reducing audible noise in analog audio path by >30dB.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-quiescent-current LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-2002E/TT	250mV dropout at 150mA; 1.6µA IQ (no-load only); 100mA max output	Limited to lower-current peripherals; superior no-load IQ but degrades sharply under load	Select when system operates predominantly at <10mA and requires extreme sleep-mode efficiency.
Torex XC6206P202MR-G	200mV dropout at 150mA; 12µA IQ (typical); 150mA output; SOT23-3 pinout matches AP7313 SOT23 (not SOT23R)	Requires PCB redesign for pin compatibility; lower IQ but reduced PSRR (55dB @ 100Hz)	Choose if footprint reuse on legacy SOT23 layouts is mandatory and PSRR >60dB is not required.

Compared with MCP1700T-2002E/TT and XC6206P202MR-G, the AP7313-20SRG-7 uniquely balances ultra-low loaded IQ (65µA), low dropout (150mV), and high PSRR (65dB) in a thermally enhanced SOT23R package - making it optimal for battery-constrained, noise-sensitive, medium-current applications where all three parameters are simultaneously critical.

Availability

AP7313-20SRG-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial handheld terminals, GSM baseband power, and USB-powered peripherals requiring stable component supply with guaranteed long-term lifecycle support.

Supply support for AP7313-20SRG-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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with emphasis on power management, signal integrity, and protection devices for industrial, computing, and consumer markets.

The AP7313 series belongs to Diodes' precision low-dropout regulator product line, engineered specifically for battery-powered portable electronics demanding ultra-low quiescent current, fast transient response, and robust protection in space-constrained SOT packages.

FAQ

What is the maximum input voltage rating for AP7313-20SRG-7?

The absolute maximum input voltage is 7V, but the recommended operating range is 2V to 6V. Exceeding 6V risks accelerated degradation of internal pass transistor reliability and may trigger thermal shutdown under load due to increased power dissipation (P_D = (V_IN − V_OUT) × I_OUT).

Can AP7313-20SRG-7 operate without an output capacitor?

No - an output capacitor is mandatory for stability. The device requires ≥1µF X5R or X7R ceramic capacitor placed within 2mm of the OUT and GND pins. Omitting it causes oscillation and unregulated output, as confirmed by functional block diagram and application note requirements in the official datasheet.

Does AP7313-20SRG-7 support adjustable output voltage?

No - it is a fixed 2.0V output device. The "20" in the part number denotes the 2.0V option; no external resistor divider or feedback pin exists. Adjustable variants (e.g., AP7312) use different part numbering and pinouts, and are not pin-compatible with AP7313-20SRG-7.

How does thermal shutdown hysteresis affect operation in high-ambient environments?

Thermal shutdown activates at ~140°C junction temperature and resets at ~125°C (15°C hysteresis). In 85°C ambient with 150mA load and standard PCB layout, θ_JA = 230°C/W yields ~120°C junction rise - staying below trip point. At higher ambient or poor heatsinking, cycling may occur, limiting average power but preventing permanent damage.

AP7313-20SRG-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):: 2V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.3V @ 150mA

Current - Output:: 150mA

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

AP7313-20SRG-7 FAQ

1.How can I place an order for AP7313-20SRG-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7313-20SRG-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 AP7313-20SRG-7 reliable?

The price and inventory of AP7313-20SRG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7313-20SRG-7 is usually 5 days.

3.What payment methods are accepted for AP7313-20SRG-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7313-20SRG-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7313-20SRG-7?

AP7313-20SRG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7313-20SRG-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 AP7313-20SRG-7?

For technical support, including AP7313-20SRG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7313-20SRG-7 requirements.

6.How does Aetrix verify that AP7313-20SRG-7 is sourced from the original manufacturer or authorized distributors?

All AP7313-20SRG-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 AP7313-20SRG-7 meets industry standards.

7.What is the process for return or replacement of AP7313-20SRG-7?

All AP7313-20SRG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7313-20SRG-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 AP7313-20SRG-7 part is unused and in its original packaging.

Return procedure for AP7313-20SRG-7:

1.Submit a request within 90 days.

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

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