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Diodes Incorporated AP7313-25SRG-7
- Part No.:
- AP7313-25SRG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7313-25SRG-7.pdf
- Description:
- IC REG LIN 2.5V 150MA SOT23R-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,620
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Product details
Overview
AP7313-25SRG-7 from Diodes Incorporated is a 150mA fixed-output (2.5V) 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 AP7313-25SRG-7 datasheet, AP7313-25SRG-7 pinout, AP7313-25SRG-7 application, or AP7313-25SRG-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 AP7313-25SRG-7 implements a PMOS pass transistor architecture enabling low dropout and minimal quiescent current independent of load. Its bandgap reference and error amplifier deliver ±2% output voltage accuracy over –40°C to +85°C ambient.
Internal protection circuitry includes thermal shutdown triggered at 140°C with 15°C hysteresis, current limiting at 200–300mA, and short-circuit clamping to ~50mA-ensuring robust operation under fault conditions without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% - ensures precise rail generation for 2.5V logic or analog circuitry without external feedback. |
| Max Output Current | 150mA continuous - supports moderate-power peripherals like sensors, RF front-ends, or microcontroller I/O banks. |
| Dropout Voltage | 150mV typical at 150mA - enables regulation from 2.65V input, extending battery runtime in single-cell Li-ion or alkaline systems. |
| Quiescent Current | 65µA typical at full load - minimizes standby power loss, critical for always-on IoT nodes and wearables. |
| PSRR | 65dB at 100Hz - suppresses low-frequency supply noise from switching converters or noisy digital domains. |
| Startup Time | 80µs - allows rapid wake-up from deep sleep modes in portable devices without compromising low-IQ operation. |
| Stability | With ≥1µF X7R/X5R ceramic output capacitor - eliminates need for bulky tantalum or electrolytic caps, reducing board area and cost. |
Pinout & Package
AP7313-25SRG-7 is housed in a RoHS-compliant, lead-free SOT23R package (3-pin, 1.3mm × 2.9mm × 1.1mm), optimized for thermal performance (θJA = 230°C/W) on standard FR-4 PCBs with recommended pad layout AP02001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Top View) | GND | Ground reference for internal bandgap, error amp, and protection circuits; must be low-impedance connection to system ground plane. |
| 2 (Top View) | OUT | Regulated 2.5V output; requires local 1µF ceramic capacitor to GND for stability and transient response. |
| 3 (Top View) | IN | Input supply (2–6V); bypassed with ≥1µF ceramic capacitor to GND to suppress high-frequency noise and ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 65µA across full 2–6V input range and 0–150mA load - extends battery life in intermittent-operation devices. |
| Fast transient response | Stable output during 0→150mA load steps with minimal overshoot/undershoot - supports GSM/TDMA baseband ICs and DSPs. |
| Integrated protection | Thermal shutdown (140°C), current limit (200–300mA), and short-circuit clamp (~50mA) - eliminates need for external fault management circuitry. |
| No minimum load requirement | Maintains regulation and stability at 0mA output - simplifies design for systems with variable or zero-load states. |
| Green packaging | SOT23R package uses halogen-free molding compound (no Br/Sb) and meets RoHS Directive 2002/95/EC. |
Applications
| Portable Medical Sensors | USB-Powered Peripherals |
|---|---|
Use Scenario: Continuous glucose monitor or pulse oximeter powered by coin-cell battery with intermittent wireless transmission. IC Role / Device Role / Timing Role: Primary 2.5V supply for analog front-end and BLE radio, enabling low-power sensing and burst-mode RF transmission. Use Value: 65µA IQ and 80µs startup minimize idle current and enable rapid sensor activation, extending battery life beyond 6 months. | Use Scenario: USB-to-serial adapter or HID keyboard drawing power solely from USB VBUS (5V). IC Role / Device Role / Timing Role: Step-down LDO generating clean 2.5V rail for microcontroller and level-shifting logic from noisy 5V USB supply. Use Value: 65dB PSRR at 100Hz suppresses USB switcher noise; 150mV dropout allows efficient use of available headroom. |
| Industrial Handheld Scanners | Low-Power Wireless Gateways |
Use Scenario: Rugged barcode scanner operating on rechargeable Li-ion with frequent wake/sleep cycles. IC Role / Device Role / Timing Role: Main 2.5V supply for image sensor, decode engine, and Bluetooth LE transceiver during active scanning bursts. Use Value: Fast 0→150mA transient response prevents voltage droop during LED illumination and sensor readout, ensuring reliable decode accuracy. | Use Scenario: Sub-GHz LoRaWAN gateway node powered by energy harvesting or long-life primary battery. IC Role / Device Role / Timing Role: Always-on 2.5V bias for ultra-low-power MCU and RF transceiver in deep-sleep mode, activated by external interrupt. Use Value: No minimum load requirement and sub-100µA IQ preserve harvested energy; 80µs startup enables immediate response to network events. |
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 |
|---|---|---|---|
| MCP1700-2502E/TO | 250mA rating, 1.6µA IQ (lower), but 300mV dropout at 250mA - higher dropout limits usable input range. | Preferred for micropower sensor nodes where IQ dominates lifetime, less suitable for high-transient loads. | Select when ultra-low IQ outweighs transient performance and dropout constraints. |
| Torex XC6206P252MR | 150mA rating, 1µF min COUT, but only 45dB PSRR at 100Hz and no short-circuit current clamp - weaker noise rejection and fault handling. | Better for cost-sensitive consumer electronics with benign supply environments and no fault exposure. | Select when PSRR and integrated short-circuit protection are non-critical. |
Compared with MCP1700-2502E/TO and XC6206P252MR, AP7313-25SRG-7 uniquely balances ultra-low IQ (65µA), fast transient response, and comprehensive protection - making it optimal for portable industrial and medical devices demanding reliability under dynamic load and fault conditions.
Availability
AP7313-25SRG-7 is available at Aetrix Electronics and suitable for portable medical sensors, USB-powered peripherals, industrial handheld scanners, and low-power wireless gateways requiring stable component supply with consistent parametric performance and long-term lifecycle support.
Supply support for AP7313-25SRG-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 AP7313 belongs to Diodes' low-dropout linear regulator product line, engineered specifically for battery-powered portable electronics requiring ultra-low quiescent current, fast transient response, and robust fault protection in compact SOT packages.
FAQ
What is the minimum input voltage required for stable 2.5V output at 150mA?
The AP7313-25SRG-7 requires a minimum input voltage of 2.65V to maintain regulated 2.5V output at 150mA load, based on its typical 150mV dropout voltage. Operation below this threshold results in unregulated output, and the device remains functional down to 2.0V input but cannot sustain full load regulation.
Can AP7313-25SRG-7 operate without an output capacitor?
No - an output capacitor of at least 1µF ceramic (X7R/X5R) is mandatory for stability and transient response. The device is not stable without it, and omitting the capacitor risks oscillation, excessive overshoot/undershoot, and potential damage under load transients.
How does thermal shutdown behave under sustained overload?
When junction temperature reaches ~140°C, thermal shutdown disables the output; recovery occurs at ~125°C due to 15°C hysteresis. Under continuous overload, this causes on/off cycling - limiting average power dissipation and preventing permanent damage, though system-level thermal design must still avoid sustained tripping.
Is AP7313-25SRG-7 compatible with 100% tin (Sn) PCB finish?
Yes - the device features a lead-free, RoHS-compliant termination finish suitable for standard Sn-based reflow profiles. Its SOT23R package meets JEDEC J-STD-020 moisture sensitivity level 1, allowing assembly without pre-bake when stored per MSL requirements.
AP7313-25SRG-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):
- 2.5V
- 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
AP7313-25SRG-7 FAQ
1.How can I place an order for AP7313-25SRG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7313-25SRG-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 AP7313-25SRG-7 reliable?
The price and inventory of AP7313-25SRG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7313-25SRG-7 is usually 5 days.
3.What payment methods are accepted for AP7313-25SRG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7313-25SRG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7313-25SRG-7?
AP7313-25SRG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7313-25SRG-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 AP7313-25SRG-7?
For technical support, including AP7313-25SRG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7313-25SRG-7 requirements.
6.How does Aetrix verify that AP7313-25SRG-7 is sourced from the original manufacturer or authorized distributors?
All AP7313-25SRG-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 AP7313-25SRG-7 meets industry standards.
7.What is the process for return or replacement of AP7313-25SRG-7?
All AP7313-25SRG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7313-25SRG-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 AP7313-25SRG-7 part is unused and in its original packaging.
Return procedure for AP7313-25SRG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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