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Diodes Incorporated AP7115-15WG-7
- Part No.:
- AP7115-15WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7115-15WG-7.pdf
- Description:
- IC REG LINEAR 1.5V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,474
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Product details
Overview
AP7115-15WG-7 from Diodes Incorporated is a 150mA fixed-output (1.5V) low-dropout linear regulator in SOT25 package, featuring 200mV dropout at full load, 50µA quiescent current, ±2% output voltage accuracy, and integrated thermal shutdown and current-limit protection. It serves as a power management IC for battery-powered wireless modules and handheld peripherals requiring stable low-voltage rail generation.
For engineers reviewing the AP7115-15WG-7 datasheet, AP7115-15WG-7 pinout, AP7115-15WG-7 application, or AP7115-15WG-7 equivalent, key selection criteria include dropout voltage at 150mA, shutdown control via EN pin, BP bypass capacitor requirement, and SOT25 thermal resistance (θJA = 200°C/W) for ambient-limited designs.
Technical Context
The AP7115-15WG-7 employs a PMOS pass element with bandgap-referenced error amplifier control, enabling regulation down to 200mV dropout while maintaining ±2% output accuracy across -40°C to +85°C ambient. Its enable (EN) input provides active-high logic control, and the BP pin accepts a 0.1µF ceramic capacitor to reduce output noise by stabilizing the internal reference.
Protection circuitry includes foldback current limiting (200–250mA typ.), thermal shutdown activation at +150°C junction temperature with 30°C hysteresis, and short-circuit survivability without damage. Input voltage range is 2.5V to 5.5V, supporting single-cell Li-ion, 3.3V, and 5V system rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% - ensures stable core voltage for 1.5V logic or analog subsystems without external feedback. |
| Max Output Current | 150mA guaranteed - sufficient for low-power microcontrollers, sensors, or RF front-end biasing. |
| Dropout Voltage | 200mV typ. at 150mA - enables operation from 1.7V input, critical for single-cell alkaline or LiFePO₄ systems. |
| Quiescent Current | 50µA typ. - minimizes standby power loss in always-on battery applications like remote sensors. |
| PSRR | 70dB at 1kHz - suppresses ripple from noisy switching supplies feeding the LDO input. |
| Thermal Shutdown | Activates at +150°C junction, resets after cooling 30°C - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| EN Pin Threshold | VIH = 2.0V min., VIL = 0.7V max. - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
SOT25 (5-pin small-outline transistor) package with exposed pad not electrically connected; JEDEC MO-203AA compliant, footprint optimized for thermal dissipation on 2oz copper FR-4 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input voltage supply | Accepts 2.5–5.5V; requires 1µF ceramic decoupling to GND for stability. |
| 2 GND | Power ground reference | Common return path for input/output currents and BP capacitor; must connect to low-impedance ground plane. |
| 3 EN | Enable control input | Active-high logic: ≥2.0V enables regulator; ≤0.7V disables output and reduces IQ to 0.1µA. |
| 4 BP | Bandgap reference bypass | Connect 0.1µF ceramic capacitor to GND to reduce output noise and improve reference stability. |
| 5 OUT | Regulated output | Delivers 1.5V ±2% at up to 150mA; requires ≥1µF ceramic output capacitor with ESR <1Ω for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout architecture | 200mV at 150mA enables use with input as low as 1.7V - extends battery runtime in portable devices. |
| Integrated enable control | EN pin allows system-level power sequencing and deep-sleep mode activation without external MOSFET. |
| Bandgap bypass support | BP pin + 0.1µF capacitor reduces output noise to 50µVrms (10Hz–100kHz), critical for ADC reference or RF bias rails. |
| Robust protection suite | Current limit (200–250mA), thermal shutdown (+150°C), and short-circuit tolerance prevent field failures under fault conditions. |
| Green packaging | SOT25 package is halogen-free, antimony-free, and fully RoHS-compliant - meets IPC-1752A environmental reporting requirements. |
Applications
| Wireless Sensor Node | GSM/GPRS Handset Module |
|---|---|
|
Use Scenario: Powering ultra-low-power MCU and sub-GHz transceiver from coin cell or Li-ion battery. IC Role / Device Role / Timing Role: Primary 1.5V supply rail generator with shutdown control synchronized to radio sleep cycles. Use Value: 50µA quiescent current minimizes self-discharge; 200mV dropout preserves usable battery voltage down to 1.7V. |
Use Scenario: Providing clean 1.5V bias to GSM power amplifier driver stage in compact handset design. IC Role / Device Role / Timing Role: Low-noise local regulator decoupled from noisy 3.3V system rail via BP capacitor. Use Value: 70dB PSRR and 50µVrms noise ensure PA linearity; SOT25 thermal resistance supports pulsed 150mA loads. |
| USB Peripheral Card | Industrial Data Logger |
|
Use Scenario: Regulating 1.5V for EEPROM and USB interface logic on CD-ROM/DVD add-in card. IC Role / Device Role / Timing Role: Fixed-output LDO with EN pin tied to host USB VBUS for automatic power-on reset. Use Value: ±2% accuracy guarantees I²C timing margin; 150mA rating covers peak bus enumeration current. |
Use Scenario: Supplying real-time clock and low-power sensor interface in battery-backed industrial logger. IC Role / Device Role / Timing Role: Always-on 1.5V rail with thermal shutdown protecting against enclosure overheating in sealed enclosures. Use Value: -40°C to +85°C operating range ensures reliability in uncontrolled environments; green package complies with EU industrial directives. |
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-1502E/TT | 150mA, 1.5V, 6µA IQ, SOT23-5 - lower quiescent current but higher 600mV dropout at 150mA. | Lacks BP pin; no bandgap bypass option - less suitable for noise-sensitive analog rails. | Select when ultra-low IQ dominates over dropout and noise performance. |
| AP7315-15SAG-7 | 150mA, 1.5V, 200mV dropout, 50µA IQ, SOT25 - same specs but newer revision; Diodes states AP7115 is "not recommended for new design". | Identical pinout and electrical behavior; improved ESD robustness (4kV HBM vs. 3.5kV). | Prefer AP7315-15SAG-7 for new designs due to active status and enhanced reliability. |
Compared with MCP1700T-1502E/TT, AP7115-15WG-7 trades 44µA higher IQ for 400mV lower dropout and BP-enabled noise reduction; versus AP7315-15SAG-7, it shares identical functionality but lacks updated ESD and lifecycle support.
Availability
AP7115-15WG-7 is available at Aetrix Electronics and suitable for wireless sensor nodes, GSM/GPRS modules, USB peripheral cards, and industrial data loggers requiring stable component supply with known thermal and protection behavior.
Supply support for AP7115-15WG-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 and consumer markets.
The AP7115 belongs to Diodes' low-quiescent-current LDO portfolio, designed specifically for space-constrained, battery-operated devices where dropout voltage, shutdown control, and thermal resilience are critical.
FAQ
What is the minimum input voltage required for AP7115-15WG-7 to maintain regulation at 150mA?
The minimum input voltage is calculated as VOUT + VDO = 1.5V + 0.2V = 1.7V. However, the absolute minimum specified input is 2.5V per Recommended Operating Conditions - this ensures reliable startup, transient response, and protection circuit operation across temperature and process variation. Operation below 2.5V is not guaranteed.
Can the EN pin be left unconnected or pulled up through a high-value resistor?
No. The EN pin has leakage current ≤0.1µA but no internal pull-up. Leaving it floating risks undefined state and erratic enable/disable behavior. For always-on operation, tie EN directly to VIN; for controlled shutdown, drive with a clean logic signal meeting VIH ≥2.0V and VIL ≤0.7V.
Is the BP pin mandatory, and what happens if it's omitted?
BP is not mandatory for basic regulation but strongly recommended: omitting the 0.1µF capacitor increases output noise by ~3× (to ~150µVrms) and degrades reference stability over temperature, affecting long-term output accuracy and load transient recovery. Diodes specifies BP use in all typical application circuits.
How does thermal shutdown behave during continuous overload?
When junction temperature reaches +150°C, the regulator shuts down completely - OUT goes to 0V and quiescent current drops to 0.1µA. After shutdown, the device remains off until junction cools by ~30°C (to ~120°C), then resumes regulation. This cycle repeats under sustained overload, preventing permanent damage but causing output oscillation.
AP7115-15WG-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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- 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-25
AP7115-15WG-7 FAQ
1.How can I place an order for AP7115-15WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7115-15WG-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 AP7115-15WG-7 reliable?
The price and inventory of AP7115-15WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7115-15WG-7 is usually 5 days.
3.What payment methods are accepted for AP7115-15WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7115-15WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7115-15WG-7?
AP7115-15WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7115-15WG-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 AP7115-15WG-7?
For technical support, including AP7115-15WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7115-15WG-7 requirements.
6.How does Aetrix verify that AP7115-15WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7115-15WG-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 AP7115-15WG-7 meets industry standards.
7.What is the process for return or replacement of AP7115-15WG-7?
All AP7115-15WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7115-15WG-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 AP7115-15WG-7 part is unused and in its original packaging.
Return procedure for AP7115-15WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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