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Diodes Incorporated AP7115-25SEG-7
- Part No.:
- AP7115-25SEG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
AP7115-25SEG-7.pdf
- Description:
- IC REG LINEAR 2.5V 150MA SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:19,180
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Product details
Overview
AP7115-25SEG-7 from Diodes Incorporated is a 150mA fixed-output (2.5V) low-dropout linear regulator in SOT353 package, featuring 200mV dropout at full load, ±2% output voltage accuracy, and 50µA quiescent current. It integrates current-limit, thermal shutdown, and enable control for battery-powered wireless handsets and portable peripherals.
For engineers reviewing the AP7115-25SEG-7 datasheet, AP7115-25SEG-7 pinout, AP7115-25SEG-7 application, or AP7115-25SEG-7 equivalent, key selection criteria include dropout voltage under 150mA load, EN-controlled shutdown behavior, BP pin bypass capacitor requirements, and thermal resistance (θJA = 337°C/W) for SOT353 layout validation.
Technical Context
The AP7115-25SEG-7 uses a PMOS pass element with bandgap reference and error amplifier to regulate output voltage. Its enable input (EN) controls MOSFET gate drive directly, while the BP pin connects to a 0.1µF capacitor to stabilize the internal reference and reduce output noise.
Protection circuitry includes foldback current limiting (200–250mA typ.), thermal shutdown activation at +150°C junction temperature, and automatic recovery after 30°C cooldown. The device operates across -40°C to +85°C ambient with input range 2.5V–5.5V and no minimum load requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% over line, load, and temperature - ensures stable core voltage for 2.5V logic rails. |
| Dropout Voltage | 200mV max at 150mA - enables regulation down to VIN = 2.7V, critical for single-cell Li-ion or alkaline systems. |
| Quiescent Current | 50µA typ. at zero load - extends battery life in always-on standby modes of GSM/GPRS modules. |
| PSRR | 70dB at 1kHz - suppresses switching noise from adjacent DC/DC converters in compact handheld PCBs. |
| Thermal Shutdown | Activates at TJ = +150°C, recovers at +120°C - prevents permanent damage during sustained overload or poor heatsinking. |
| EN Pin Threshold | VIH = 2.0V min, VIL = 0.7V max - compatible with 1.8V/3.3V GPIO without level-shifting in microcontroller-based power sequencing. |
| Output Noise | 50µVrms (10Hz–100kHz) - suitable for noise-sensitive analog circuits like ADC references or RF front-end biasing. |
Pinout & Package
SOT353 (5-pin, 1.3mm × 2.15mm × 0.9mm) surface-mount package with exposed pad not electrically connected; JEDEC-compliant footprint per Diodes Inc. outline drawing SOT353.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Voltage Input | Accepts 2.5V–5.5V unregulated supply; requires 1µF ceramic decoupling to GND for stability. |
| 2 GND | Ground Reference | Primary return path for load current and internal bias; must connect to low-impedance ground plane. |
| 3 EN | Enable Control | Active-high digital input; drives internal PMOS gate; tie to VIN if always-on operation required. |
| 4 BP | Bandgap Bypass | Connects to 0.1µF capacitor to GND to filter reference noise and improve PSRR below 100kHz. |
| 5 OUT | Voltage Output | Delivers regulated 2.5V; supports ≥1µF ceramic output capacitance with ESR <1Ω for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Architecture | 200mV dropout at 150mA enables use with weak or depleting batteries without brownout. |
| Enable-Controlled Power Sequencing | EN pin allows synchronized startup/shutdown with host MCU, reducing system-level leakage current. |
| Bandgap Bypass Optimization | BP pin + 0.1µF cap reduces output voltage drift and improves transient response by stabilizing reference node. |
| Integrated Protection | Current limit (250mA typ.) and thermal shutdown prevent failure during short-circuit or high-ambient conditions. |
| Green Packaging | SOT353 package is halogen-free, antimony-free, and fully RoHS-compliant (Pb-free, Br/Sb <900ppm). |
Applications
| GSM/GPRS Handset Power | USB Peripheral Regulation |
|---|---|
|
Use Scenario: Regulating 2.5V supply for baseband processor I/O banks in dual-SIM mobile phones. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise 2.5V rail with fast load transient response to handle burst TX/RX current demands. Use Value: 50µA quiescent current minimizes standby drain; 70dB PSRR isolates processor from noisy USB VBUS or PMIC switching noise. |
Use Scenario: Providing stable 2.5V to USB-to-UART bridge ICs on compact dongles or docking stations. IC Role / Device Role / Timing Role: Local point-of-load regulator enabling independent power domain control via EN pin during USB suspend/resume cycles. Use Value: 200mV dropout ensures regulation from 2.7V minimum VBUS (under USB cable drop), maintaining UART link integrity. |
| CD-ROM/DVD Drive Logic | Notebook Card Reader Bias |
|
Use Scenario: Powering 2.5V interface logic in optical drive controller boards operating from 3.3V or 5V rails. IC Role / Device Role / Timing Role: Low-noise LDO supplying timing-critical SERDES or buffer circuits with minimal jitter contribution. Use Value: 50µVrms output noise avoids bit errors in high-speed data paths; ±2% accuracy ensures compliance with JEDEC 2.5V I/O specs. |
Use Scenario: Generating 2.5V bias for SD/MMC card interface circuitry in ultrabook expansion slots. IC Role / Device Role / Timing Role: Enable-controlled regulator that powers down card detection circuitry when no card is inserted. Use Value: Shutdown current <1µA eliminates parasitic drain during sleep states; SOT353 footprint saves space in tight card-edge layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/TT | 250mA rated, 1.6µA IQ, SOT23-5 package, no BP pin | Lacks bandgap bypass; lower IQ benefits ultra-low-power sensors but higher PSRR needed for RF apps | Select when lowest possible quiescent current is primary; avoid where reference noise sensitivity exists |
| AP7315-25SAG-7 | Successor part: same pinout, 250mA rating, 1.5µA IQ, improved thermal performance (θJA = 250°C/W) | Direct replacement with enhanced efficiency and reliability; Diodes Inc. marks AP7115 as "Not Recommended for New Design" | Prefer for new designs requiring longer product lifecycle support and lower static power |
Compared with MCP1700T-2502E/TT, AP7115-25SEG-7 offers superior PSRR and BP-enabled noise filtering but higher IQ; versus AP7315-25SAG-7, it lacks modern efficiency and thermal specs, making the latter the recommended upgrade path.
Availability
AP7115-25SEG-7 is available at Aetrix Electronics and suitable for GSM/GPRS handset power, USB peripheral regulation, and notebook card reader bias applications requiring stable component supply and long-term industrial availability.
Supply support for AP7115-25SEG-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 power management, signal integrity, and protection solutions for consumer, industrial, and communications markets.
The AP7115 belongs to Diodes' low-quiescent-current LDO family designed specifically for battery-powered portable electronics where dropout voltage, shutdown control, and noise performance define system runtime and signal fidelity.
FAQ
What is the maximum input voltage for AP7115-25SEG-7?
The absolute maximum input voltage is 5.5V. Operation above this risks permanent damage to the internal PMOS pass transistor and bandgap reference circuit. Recommended operating range is 2.5V to 5.5V, with dropout performance optimized above 2.7V for 2.5V output.
Can the BP pin be left floating?
No - the BP pin must be connected to a 0.1µF ceramic capacitor to GND. Leaving it floating degrades reference stability, increases output voltage drift over temperature (±100 ppm/°C vs. ±50 ppm/°C), and reduces PSRR by up to 20dB at 10kHz.
Is AP7115-25SEG-7 pin-compatible with AP7315-25SAG-7?
Yes - both use identical SOT353 pinout (IN, GND, EN, BP, OUT) and share the same footprint, pad layout, and functional pin assignments. AP7315-25SAG-7 is a direct drop-in successor with improved specifications and updated lifecycle status.
What is the minimum output capacitance required?
A minimum of 1µF ceramic capacitor is required between OUT and GND. Lower values risk instability; X5R/X7R dielectrics are preferred. ESR must be ≤1Ω across 10Hz–100kHz to maintain phase margin, as confirmed by Diodes' stable region plot in DS31333 Rev. 12–3.
AP7115-25SEG-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
AP7115-25SEG-7 FAQ
1.How can I place an order for AP7115-25SEG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7115-25SEG-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 AP7115-25SEG-7 reliable?
The price and inventory of AP7115-25SEG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7115-25SEG-7 is usually 5 days.
3.What payment methods are accepted for AP7115-25SEG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7115-25SEG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7115-25SEG-7?
AP7115-25SEG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7115-25SEG-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 AP7115-25SEG-7?
For technical support, including AP7115-25SEG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7115-25SEG-7 requirements.
6.How does Aetrix verify that AP7115-25SEG-7 is sourced from the original manufacturer or authorized distributors?
All AP7115-25SEG-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 AP7115-25SEG-7 meets industry standards.
7.What is the process for return or replacement of AP7115-25SEG-7?
All AP7115-25SEG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7115-25SEG-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 AP7115-25SEG-7 part is unused and in its original packaging.
Return procedure for AP7115-25SEG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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