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Diodes Incorporated AP7115-28WG-7
- Part No.:
- AP7115-28WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7115-28WG-7.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,580
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Product details
Overview
AP7115-28WG-7 from Diodes Incorporated is a 150mA fixed-output (2.8V) low-dropout linear regulator in SOT25 package, featuring 200mV dropout at full load, ±2% output voltage accuracy, and 50µA quiescent current. It integrates current-limit, thermal shutdown, and enable control, making it suitable for GSM/GPRS handsets and battery-powered peripherals where stable low-noise 2.8V rail generation is required.
For engineers reviewing the AP7115-28WG-7 datasheet, AP7115-28WG-7 pinout, AP7115-28WG-7 application, or AP7115-28WG-7 equivalent, key selection criteria include dropout performance at 150mA, EN-controlled power sequencing, BP-bypass noise reduction capability, and SOT25 thermal resistance (200°C/W) for compact portable designs.
Technical Context
The AP7115-28WG-7 uses a PMOS pass element with bandgap reference and error amplifier feedback to regulate output. Its enable input controls internal biasing, while the BP pin accepts a 0.1µF capacitor to suppress reference noise and improve output voltage stability.
Protection circuitry includes foldback current limiting (200–250mA typ.), thermal shutdown activation at +150°C, and automatic recovery after junction cooling by ~30°C. Input voltage range is 2.5V to 5.5V, supporting single-cell Li-ion and dual-cell alkaline/battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±2% - ensures stable logic supply for 2.8V I/O interfaces without external resistive feedback. |
| Dropout Voltage | 200mV @ 150mA - enables regulation down to VIN = 3.0V, critical for extending battery runtime in 3.3V/3.0V systems. |
| Quiescent Current | 50µA typ. @ no load - minimizes standby power loss in always-on mobile subsystems like SIM card or Bluetooth modules. |
| PSRR | 70dB @ 1kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Thermal Shutdown | Activates at +150°C junction temperature - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| EN Pin Threshold | VIH = 2.0V, VIL = 0.7V - compatible with 1.8V/3.3V GPIOs for precise system-level power sequencing control. |
| Output Noise | 50µVrms (10Hz–100kHz) - low enough for analog sensor biasing and RF front-end LDO applications. |
Pinout & Package
SOT25 package: 5-pin, surface-mount, RoHS-compliant, green molding compound; thermal resistance θJA = 200°C/W on standard FR-4 board with minimum pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input voltage supply | Accepts 2.5–5.5V; requires ≥1µF ceramic input capacitor for stability and ESD filtering. |
| 2 GND | Power ground reference | Low-impedance return path for all internal circuits; must be connected directly to PCB ground plane. |
| 3 EN | Enable control input | Active-high logic input; drives regulator ON when ≥2.0V, OFF when ≤0.7V; leakage <0.1µA. |
| 4 BP | Bandgap reference bypass | Connects 0.1µF capacitor to GND to reduce reference noise and improve output voltage temperature drift. |
| 5 OUT | Regulated output | Delivers up to 150mA at 2.8V; stable with ≥1µF ceramic output capacitor; ESR affects loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout architecture | 200mV @ 150mA enables operation from partially discharged batteries in handheld devices. |
| Enable-controlled power gating | EN pin allows system MCU to selectively power down peripheral rails, reducing total system idle current. |
| Bandgap bypass (BP) pin | 0.1µF capacitor on BP reduces output noise by stabilizing internal reference, critical for RF-sensitive loads. |
| Integrated protection | Current limit (250mA typ.) and thermal shutdown prevent failure under short-circuit or overtemperature conditions. |
| Green packaging | SOT25 package is halogen-free, antimony-free, and fully RoHS-compliant per EU Directive 2011/65/EU. |
Applications
| GSM/GPRS Handset Power Management | Mobile Peripheral Voltage Regulation |
|---|---|
|
Use Scenario: Providing clean 2.8V supply to baseband processor I/O banks and SIM interface in dual-mode cellular phones. IC Role / Device Role / Timing Role: Primary LDO for 2.8V logic rail; sequenced via EN signal synchronized with modem boot sequence. Use Value: 50µA quiescent current extends standby time; ±2% accuracy ensures reliable digital interface timing margins. |
Use Scenario: Regulating 2.8V for Bluetooth/Wi-Fi module power in notebook docking stations and USB adapters. IC Role / Device Role / Timing Role: Standalone post-regulator isolating noisy DC-DC outputs from sensitive RF transceivers. Use Value: 70dB PSRR at 1kHz attenuates switching ripple; low noise avoids receiver desensitization. |
| Battery-Powered Sensor Node | Optical Drive Logic Supply |
|
Use Scenario: Powering 2.8V microcontroller and analog sensor front-end in wireless environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-quiescent LDO enabling multi-year battery life; BP pin used to minimize ADC reference drift. Use Value: 200mV dropout allows operation down to 3.0V input, maximizing usable capacity of two AA cells. |
Use Scenario: Generating 2.8V for servo control ICs and laser diode drivers in CD-ROM/DVD optical pickup assemblies. IC Role / Device Role / Timing Role: Local LDO delivering stable voltage despite high-current transient loads from motor actuation. Use Value: Fast transient response maintains regulation during 150mA step-load changes; thermal shutdown prevents latch-up. |
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 |
|---|---|---|---|
| AP7315-28SAG-7 | Successor device with improved PSRR (75dB), lower IQ (35µA), and same SOT25 footprint. | Designed for new designs requiring longer battery life and higher noise immunity; pin-compatible drop-in replacement. | Select AP7315-28SAG-7 for new designs; AP7115-28WG-7 remains viable for legacy BOM continuity. |
| MCP1700T-2802E/TT | Microchip 250mA LDO; 175mV dropout @ 250mA, 2.5µA IQ, but no BP pin or EN control. | Lacks enable and bandgap bypass functions; suited for always-on, ultra-low-IQ applications without sequencing needs. | Choose only if EN and BP features are unnecessary and 250mA output is required; not functionally equivalent. |
Compared with AP7315-28SAG-7, the AP7115-28WG-7 offers proven field reliability but higher quiescent current and lower PSRR; versus MCP1700T-2802E/TT, it provides essential enable control and noise-reduction capability at the cost of higher IQ.
Availability
AP7115-28WG-7 is available at Aetrix Electronics and suitable for GSM/GPRS handsets, mobile peripherals, and battery-powered sensor nodes requiring stable component supply across extended production lifecycles.
Supply support for AP7115-28WG-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-power LDO family designed specifically for space-constrained, battery-operated portable electronics requiring high accuracy, low noise, and robust protection.
FAQ
What is the recommended input and output capacitor configuration for AP7115-28WG-7?
A 1µF ceramic input capacitor between IN and GND is mandatory. The output requires ≥1µF ceramic capacitance; higher values improve transient response. A 0.1µF capacitor must be placed between BP and GND to minimize output voltage noise and stabilize the bandgap reference.
Can the EN pin be left unconnected if shutdown functionality is not needed?
No - the EN pin must not be left floating. If shutdown is unused, tie EN directly to IN (VIN) to ensure the regulator remains enabled. Floating EN may cause unpredictable startup behavior or oscillation due to noise coupling.
What is the maximum continuous output current and how does thermal derating affect it?
The AP7115-28WG-7 guarantees 150mA output current under specified conditions. At ambient temperatures above +25°C or with insufficient PCB copper area, output current must be reduced per the thermal equation PD = (VIN − VOUT) × IOUT + VIN × IQ, using θJA = 200°C/W for SOT25.
Is AP7115-28WG-7 suitable for powering RF circuits such as Bluetooth transceivers?
Yes - its 50µVrms output noise (10Hz–100kHz) and 70dB PSRR at 1kHz make it appropriate for RF analog sections. Use the BP pin with 0.1µF capacitor and separate quiet ground routing to maintain signal integrity in Bluetooth/Wi-Fi modules.
AP7115-28WG-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):
- 2.8V
- 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
AP7115-28WG-7 FAQ
1.How can I place an order for AP7115-28WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7115-28WG-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 AP7115-28WG-7 reliable?
The price and inventory of AP7115-28WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7115-28WG-7 is usually 5 days.
3.What payment methods are accepted for AP7115-28WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7115-28WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7115-28WG-7?
AP7115-28WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7115-28WG-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 AP7115-28WG-7?
For technical support, including AP7115-28WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7115-28WG-7 requirements.
6.How does Aetrix verify that AP7115-28WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7115-28WG-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 AP7115-28WG-7 meets industry standards.
7.What is the process for return or replacement of AP7115-28WG-7?
All AP7115-28WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7115-28WG-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 AP7115-28WG-7 part is unused and in its original packaging.
Return procedure for AP7115-28WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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