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Diodes Incorporated AP7311-25WG-7
- Part No.:
- AP7311-25WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7311-25WG-7.pdf
- Description:
- IC REG LINEAR 2.5V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,651
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Product details
Overview
AP7311-25WG-7 from Diodes Incorporated is a 150mA fixed-output (2.5V) low-dropout linear regulator in SOT25 package, featuring 65µA quiescent current, 150mV dropout at full load, and 65dB PSRR at 100Hz. It integrates enable control, thermal shutdown, current limiting, and short-circuit protection - designed for battery-powered portable devices requiring stable, ultra-low-power voltage regulation.
For engineers reviewing the AP7311-25WG-7 datasheet, AP7311-25WG-7 pinout, AP7311-25WG-7 application, or AP7311-25WG-7 equivalent, key selection criteria include fixed 2.5V output accuracy (±2%), fast 80µs startup, stability with 1µF ceramic output capacitor, and operation across –40°C to +85°C ambient range.
Technical Context
The AP7311-25WG-7 implements a PMOS pass transistor architecture with internal 0.4V bandgap reference and error amplifier, enabling low dropout and minimal IQ across 2V–6V input range. Its EN pin controls high-side gate driver logic with VIH = 1.4V and VIL = 0.4V thresholds.
Protection circuitry includes foldback current limiting (200–300mA), short-circuit clamping (~50mA), and thermal shutdown at 140°C with 15°C hysteresis. Transient response is optimized via internal compensation stable with 1–4.7µF X7R/X5R ceramic capacitors and ESR 10–200mΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% over –40°C to +85°C; enables direct replacement of 2.5V logic rails without external resistors. |
| Max Output Current | 150mA continuous; sufficient for single-core microcontrollers, sensors, or RF front-end biasing. |
| Dropout Voltage | 150mV typical at 150mA; allows regulation from 2.65V input - critical for single-cell Li-ion or alkaline battery systems. |
| Quiescent Current | 65µA typical at full load; reduces standby power loss in always-on IoT nodes and wearables. |
| PSRR | 65dB at 100Hz; suppresses low-frequency ripple from switching DC/DC stages upstream. |
| Startup Time | 80µs from EN assertion to regulated 2.5V; supports rapid wake-up in duty-cycled applications like GSM baseband. |
| Thermal Shutdown | Triggers at 140°C junction temperature with 15°C hysteresis; prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
SOT25 (5-pin, 1.6mm × 2.9mm × 1.1mm) surface-mount package with RoHS-compliant lead-free finish and green molding compound (no Br/Sb).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | Accepts 2V–6V; requires ≥1µF ceramic bypass capacitor placed adjacent to pin for noise rejection and stability. |
| 2 - GND | Power ground reference | Common return path for input/output currents; must connect to low-impedance PCB ground plane. |
| 3 - EN | Enable control input | Active-high logic interface; ties to VIN for always-on operation or microcontroller GPIO for dynamic power gating. |
| 4 - NC | No connection | Unbonded pad in fixed-output variant; must remain unconnected and un-routed on PCB. |
| 5 - OUT | Regulated 2.5V output | Delivers up to 150mA; stable with 1µF ceramic capacitor; sensitive to trace inductance - place cap within 2mm. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 65µA at full 150mA load - extends battery life in coin-cell-powered sensors by >3× vs typical 200µA LDOs. |
| Fast transient response | Stable 2.5V output under 0→150mA load steps with <50mV undershoot - meets GSM/EDGE baseband supply requirements. |
| Single-capacitor stability | Guaranteed stable with 1µF X7R ceramic output capacitor - eliminates need for costly tantalum or large bulk caps. |
| Integrated protection | Current limit (300mA), short-circuit clamp (50mA), and thermal shutdown (140°C) - removes need for external fault management circuitry. |
| Wide input range | Operates from 2V to 6V - supports single-cell LiFePO₄ (2.5–3.6V), alkaline (2–4.5V), and USB-powered (4.5–5.5V) systems. |
Applications
| Portable Medical Sensors | GSM Baseband Power |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) using coin-cell battery with intermittent Bluetooth LE transmission. IC Role / Device Role / Timing Role: Primary 2.5V supply for analog front-end and BLE SoC during active transmit bursts. Use Value: 80µs startup and fast load transient response prevent brownout during 150mA TX pulses; 65µA IQ extends 3-year battery life. |
Use Scenario: Dual-mode GSM/GPRS handset baseband IC requiring clean, dynamically switched 2.5V rail. IC Role / Device Role / Timing Role: Dedicated LDO for DSP core voltage, enabled only during TDMA transmit slots. Use Value: EN-controlled sequencing synchronizes with baseband timing controller; 65dB PSRR rejects switching noise from PMU DC/DC converters. |
| Industrial IoT Node | USB-Powered Peripherals |
|
Use Scenario: LoRaWAN sensor node powered by AA batteries, sampling every 10 minutes and transmitting once per hour. IC Role / Device Role / Timing Role: Always-on 2.5V regulator for MCU, LoRa transceiver, and environmental sensors. Use Value: 150mV dropout enables operation down to 2.65V input - extracts >90% of alkaline battery capacity before cutoff. |
Use Scenario: USB audio interface dongle drawing power from host PC's 5V bus while supplying 2.5V to DAC and op-amps. IC Role / Device Role / Timing Role: Post-regulator isolating sensitive analog circuitry from noisy USB 5V supply. Use Value: 65dB PSRR at 100Hz suppresses USB switcher ripple; SOT25 footprint minimizes board area in compact dongle design. |
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-2502E/TT | 250mA rating, 1.6µA IQ (lower), but 300mV dropout at 250mA; SOT23-5 package. | Higher current headroom but larger dropout limits use below 2.8V input; better for ultra-low-IQ always-on logic rails. | Select when sub-2µA standby current outweighs dropout sensitivity - e.g., energy-harvesting nodes. |
| Torex XC6206P252MR-G | 150mA, 12µA IQ, 200mV dropout at 150mA; same SOT25 footprint and 2.5V fixed output. | Near-identical electrical specs but lower PSRR (55dB @ 100Hz); less effective against upstream DC/DC noise. | Select when lowest possible IQ is mandatory and system-level PSRR budget permits 10dB margin reduction. |
Compared with MCP1700T-2502E/TT and XC6206P252MR-G, the AP7311-25WG-7 uniquely balances 65µA IQ, 150mV dropout, and 65dB PSRR in a proven SOT25 package - making it optimal for battery-constrained portable systems needing both efficiency and noise immunity.
Availability
AP7311-25WG-7 is available at Aetrix Electronics and suitable for portable medical sensors, GSM baseband power, industrial IoT nodes, and USB-powered peripherals requiring stable component supply with guaranteed long-term availability.
Supply support for AP7311-25WG-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 company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP7311 belongs to Diodes' precision low-dropout regulator product line, engineered specifically for ultra-low-power portable electronics where battery life, transient performance, and small-footprint integration are critical.
FAQ
Can AP7311-25WG-7 operate with input voltage below 2.5V?
Yes - the AP7311-25WG-7 functions down to 2.0V input, but regulation ceases when VIN drops below VOUT + VDROP. At 2.5V output and 150mV typical dropout, minimum functional input is 2.65V. Below that, output follows input minus dropout until unregulated dropout occurs.
Is an external resistor divider required for AP7311-25WG-7?
No - AP7311-25WG-7 is the fixed 2.5V output variant; the ADJ pin is internally connected and unused (NC). External resistors are only needed for adjustable versions like AP7311-ADJ. The "25" in the part number explicitly denotes 2.5V fixed output.
What is the maximum allowable power dissipation in SOT25 package?
At 25°C ambient, maximum power dissipation is 640mW (θJA = 190°C/W). For example, at 150mA load and 1V input-to-output differential (VIN = 3.5V), power dissipated is 150mW - well within safe limits. Derate linearly above 25°C using θJA.
Does AP7311-25WG-7 require a minimum load current for stability?
No - the device remains stable and regulated with zero load current. Diodes' datasheet explicitly states "no minimum load is required," confirmed by test data showing stable no-load operation across temperature and input voltage ranges.
AP7311-25WG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7311-25WG-7 FAQ
1.How can I place an order for AP7311-25WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7311-25WG-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 AP7311-25WG-7 reliable?
The price and inventory of AP7311-25WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7311-25WG-7 is usually 5 days.
3.What payment methods are accepted for AP7311-25WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7311-25WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7311-25WG-7?
AP7311-25WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7311-25WG-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 AP7311-25WG-7?
For technical support, including AP7311-25WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7311-25WG-7 requirements.
6.How does Aetrix verify that AP7311-25WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7311-25WG-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 AP7311-25WG-7 meets industry standards.
7.What is the process for return or replacement of AP7311-25WG-7?
All AP7311-25WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7311-25WG-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 AP7311-25WG-7 part is unused and in its original packaging.
Return procedure for AP7311-25WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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