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Diodes Incorporated AP7115-12WG-7
- Part No.:
- AP7115-12WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7115-12WG-7.pdf
- Description:
- IC REG LINEAR 1.2V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:1,265
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Product details
Overview
AP7115-12WG-7 from Diodes Incorporated is a 150mA fixed-output (1.2V) low-dropout linear regulator in SOT25 package, featuring 200mV dropout at full load, ±2% output accuracy, and 50µA quiescent current. It integrates current-limit, thermal shutdown, and enable control for battery-powered wireless handsets and mobile peripherals.
For engineers reviewing the AP7115-12WG-7 datasheet, AP7115-12WG-7 pinout, AP7115-12WG-7 application, or AP7115-12WG-7 equivalent, key selection criteria include dropout voltage under 150mA load, EN-controlled shutdown behavior, BP bypass capacitor requirements, and thermal resistance (θJA = 200°C/W) for compact PCB layouts.
Technical Context
The AP7115-12WG-7 uses a PMOS pass element with bandgap reference and error amplifier feedback to regulate 1.2V output across 2.5–5.5V input. Its internal current-limit circuit clamps output at 200–250mA and enables indefinite short-circuit survival without damage.
Thermal shutdown activates at +150°C junction temperature and resets after ~30°C cooldown. The BP pin accepts a 0.1µF ceramic capacitor to reduce output noise, while EN provides logic-level on/off control with <0.1µA leakage and 0.7V/2.0V VIH/VIL thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±2% - ensures stable core voltage for low-power microcontrollers and RF ICs |
| Dropout Voltage | 200mV (typ.) at 150mA - enables operation down to 1.4V input, critical for single-cell Li-ion or alkaline systems |
| Quiescent Current | 50µA (typ.) - minimizes standby power loss in always-on sensor nodes and sleep-mode peripherals |
| PSRR | 70dB at 1kHz - suppresses ripple from noisy DC-DC stages feeding sensitive analog circuits |
| Current Limit | 200–250mA (typ.) - protects downstream circuitry during fault conditions without external fusing |
| Thermal Shutdown | +150°C activation - prevents permanent damage during sustained overload or poor heatsinking |
| EN Input Threshold | VIL ≤ 0.7V / VIH ≥ 2.0V - compatible with 1.8V/3.3V GPIO without level-shifting |
Pinout & Package
SOT25 (5-pin, 2.8mm × 2.9mm × 1.3mm) surface-mount package with exposed pad for thermal enhancement; RoHS-compliant, halogen-free "Green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input voltage supply | Accepts 2.5–5.5V; requires 1µF ceramic input capacitor to GND for stability |
| 2 GND | Ground reference | Common return path for input, output, and bypass capacitors; connects to thermal pad |
| 3 EN | Enable control input | Active-high logic; drives regulator ON/OFF; tie to VIN if shutdown not required |
| 4 BP | Bandgap reference bypass | Connects 0.1µF ceramic capacitor to GND to reduce output voltage noise by >30% |
| 5 OUT | Regulated output | Delivers 1.2V ±2% at up to 150mA; stable with ≥1µF ceramic output capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout architecture | 200mV @ 150mA enables use with single-cell batteries down to 1.4V input |
| Ultra-low quiescent current | 50µA typ. extends battery life in IoT sensors operating >95% in sleep mode |
| Integrated protection suite | Current limit + thermal shutdown + short-circuit survival prevent field failures |
| High PSRR & fast transient response | 70dB PSRR at 1kHz and rapid load-step recovery suit RF transceiver power rails |
| BP pin noise reduction | 0.1µF BP-to-GND cap cuts output noise by 50µVrms (10Hz–100kHz), critical for ADC references |
Applications
| Wireless Handset Power Rail | GSM/GPRS Baseband Core |
|---|---|
Use Scenario: Powering baseband processor I/O banks in dual-SIM GSM phones with tight space constraints. IC Role / Device Role / Timing Role: Primary 1.2V LDO for digital core logic requiring low-noise, fast transient response. Use Value: 200mV dropout allows direct regulation from 3.3V DC-DC output, eliminating intermediate conversion stages. |
Use Scenario: Supplying 1.2V to GSM transceiver digital sections during burst transmission. IC Role / Device Role / Timing Role: Low-noise, EN-controllable rail enabling synchronized power gating with TX enable signals. Use Value: 50µA IQ and 70dB PSRR maintain signal integrity during high-current RF bursts. |
| Battery-Powered Sensor Node | PC Peripheral Voltage Regulation |
Use Scenario: Regulating 1.2V for ultra-low-power BLE SoC in coin-cell–powered environmental sensors. IC Role / Device Role / Timing Role: Always-on LDO with EN pin controlled by MCU wake-up interrupt. Use Value: 0.1µA shutdown current and ±2% accuracy ensure multi-year battery life and consistent ADC reference. |
Use Scenario: Providing 1.2V to USB 3.0 controller logic on notebook docking stations. IC Role / Device Role / Timing Role: Secondary LDO for interface logic requiring ESD-hardened, thermally robust supply. Use Value: 3.5kV HBM ESD rating and SOT25 thermal resistance (200°C/W) withstand hot-plug transients and enclosure heat buildup. |
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 |
|---|---|---|---|
| AP7315-12SG-7 | Successor device with improved 30µA IQ, lower 150mV dropout, and same SOT25 footprint | Designed for new designs; supports tighter input range (1.7–5.5V) and higher PSRR (75dB) | Select for new projects requiring longer battery life and better noise rejection |
| MCP1700T-1202E/TT | Microchip 150mA LDO with 4µA IQ but only 100mA guaranteed output and no BP pin | Lacks bandgap bypass and thermal shutdown reset hysteresis; limited short-circuit robustness | Use where ultra-low IQ dominates over fault protection and noise performance |
Compared with AP7315-12SG-7, the AP7115-12WG-7 offers proven field reliability and broader input range (2.5–5.5V vs. 1.7–5.5V), while MCP1700T-1202E/TT trades protection features for minimal quiescent current-making AP7115-12WG-7 optimal for cost-sensitive, safety-critical portable designs needing robust fault handling.
Availability
AP7115-12WG-7 is available at Aetrix Electronics and suitable for wireless handsets, GSM/GPRS baseband modules, and battery-powered sensor nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP7115-12WG-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 automotive markets.
The AP7115 belongs to Diodes' low-quiescent-current LDO family, engineered specifically for space-constrained, battery-operated devices demanding high accuracy, low dropout, and integrated fault protection without external components.
FAQ
What is the minimum input voltage required for AP7115-12WG-7 to maintain 1.2V output at 150mA?
The minimum input voltage is 1.4V, calculated as VOUT + VDO = 1.2V + 0.2V. The datasheet guarantees regulation down to 2.5V input, but operation below that is feasible if dropout margin is maintained and thermal limits are observed. At 1.4V input, power dissipation drops to 30mW, well within SOT25's 500mW absolute maximum.
Can the BP pin be left unconnected if low-noise performance is not required?
No-leaving BP floating risks instability and increased output noise. The BP pin must be connected to GND through a 0.1µF ceramic capacitor, as specified in the Application Note. Omitting this capacitor degrades PSRR by up to 15dB and increases RMS noise from 50µV to >100µV, compromising ADC or RF circuit performance.
Does AP7115-12WG-7 support reverse-voltage protection?
No-the device lacks intrinsic reverse-polarity protection. If input can be reversed (e.g., during hot-swap or battery insertion), an external series Schottky diode or ideal diode controller is required. Reverse voltage beyond –0.3V on IN or OUT may cause latch-up or permanent damage per Absolute Maximum Ratings.
How does thermal shutdown behave during continuous overload?
When junction temperature reaches +150°C, the regulator shuts off completely. It remains off until temperature falls by ~30°C (to ~120°C), then resumes regulation. This hysteresis prevents oscillation. Under sustained 150mA load at 5.5V input, θJA = 200°C/W limits ambient operation to +55°C unless board copper area is increased per Diodes' recommended pad layout.
AP7115-12WG-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):
- 1.2V
- 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
AP7115-12WG-7 FAQ
1.How can I place an order for AP7115-12WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7115-12WG-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 AP7115-12WG-7 reliable?
The price and inventory of AP7115-12WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7115-12WG-7 is usually 5 days.
3.What payment methods are accepted for AP7115-12WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7115-12WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7115-12WG-7?
AP7115-12WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7115-12WG-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 AP7115-12WG-7?
For technical support, including AP7115-12WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7115-12WG-7 requirements.
6.How does Aetrix verify that AP7115-12WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7115-12WG-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 AP7115-12WG-7 meets industry standards.
7.What is the process for return or replacement of AP7115-12WG-7?
All AP7115-12WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7115-12WG-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 AP7115-12WG-7 part is unused and in its original packaging.
Return procedure for AP7115-12WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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