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Diodes Incorporated AP7115-33WG-7
- Part No.:
- AP7115-33WG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7115-33WG-7.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,199
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Product details
Overview
AP7115-33WG-7 from Diodes Incorporated is a 150mA fixed-output (3.3V) low-dropout linear regulator with shutdown control, designed for power management in space-constrained battery-powered systems. It delivers ±2% output voltage accuracy, 200mV dropout at full load, and 50µA quiescent current - enabling >100-hour runtime in coin-cell–powered GSM/GPRS handsets and portable peripherals.
For engineers reviewing the AP7115-33WG-7 datasheet, AP7115-33WG-7 pinout, AP7115-33WG-7 application, or AP7115-33WG-7 equivalent, key selection criteria include guaranteed 150mA output under 2.5–5.5V input, thermal shutdown at +150°C, EN-controlled enable/disable sequencing, and SOT25 package compatibility with high-density PCB layouts.
Technical Context
The AP7115-33WG-7 integrates a PMOS pass element, bandgap reference with 50ppm/°C tempco, error amplifier, and protection circuitry including current limit (250mA typ.) and thermal shutdown. Its architecture enables stable regulation with 1µF ceramic input/output capacitors and 0.1µF BP bypass capacitor.
Operation requires EN pin logic-high (>2.0V) to activate regulation; pulling EN ≤0.7V disables output and reduces shutdown current to 0.1µA. Dropout behavior follows VDO = RDS(ON) × IOUT, with RDS(ON) calibrated to sustain 200mV max at 150mA across -40°C to +85°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% - ensures reliable interface with 3.3V logic families (e.g., UART, SPI peripherals) without external feedback resistors. |
| Dropout Voltage | 200mV max at 150mA - allows operation down to 3.5V input when powering 3.3V loads from single Li-ion or dual alkaline cells. |
| Quiescent Current | 50µA typical - extends battery life in always-on monitoring circuits such as Bluetooth LE beacons or sensor nodes. |
| Input Voltage Range | 2.5V to 5.5V - supports direct connection to USB VBUS (5V), LiPo batteries (4.2V), or regulated 3.3V rails with headroom margin. |
| PSRR | 70dB at 1kHz - suppresses ripple from noisy switch-mode power supplies feeding intermediate rails in multi-rail embedded systems. |
| Thermal Shutdown | Activates at +150°C junction temperature - protects against sustained overload or poor PCB thermal design in sealed handheld enclosures. |
| Current Limit | 250mA typical - provides short-circuit robustness while allowing safe inrush into 1000µF bulk capacitance on downstream rails. |
Pinout & Package
SOT25 (5-pin) surface-mount package with exposed pad for thermal enhancement; footprint compatible with JEDEC MO-178AA standard. Dimensions: 2.90mm × 1.60mm × 1.10mm (L×W×H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator Input | Accepts 2.5–5.5V unregulated supply; requires 1µF ceramic capacitor to GND for stability and ESD filtering. |
| 2 GND | Power Ground | Reference node for all internal circuitry; must connect directly to low-impedance PCB ground plane to minimize noise coupling. |
| 3 EN | Enable Control | Active-high logic input; drives internal PMOS gate to start/stop regulation; 0.1µA leakage enables direct MCU GPIO control. |
| 4 BP | Bandgap Bypass | Connects 0.1µF ceramic capacitor to GND to reduce output voltage noise by stabilizing internal reference node. |
| 5 OUT | Regulated Output | Delivers 3.3V ±2% at up to 150mA; requires ≥1µF ceramic output capacitor with ESR <1Ω for transient stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low Quiescent Current | 50µA enables >1-year battery life in intermittent-sensing applications using CR2032 cells (220mAh capacity). |
| Fast Transient Response | Stabilizes within 10µs after 50mA load step - maintains clean supply for RF transceivers during TX burst mode. |
| Green Packaging | SOT25 package uses halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb) compliant with RoHS 2 Directive 2011/65/EU. |
| Integrated Protection | Combines current limit (250mA), thermal shutdown (+150°C), and short-circuit survival - eliminates need for external fuse or thermal sensor. |
| High PSRR | 70dB at 1kHz suppresses switching noise from upstream DC/DC converters, reducing need for additional LC filtering stages. |
Applications
| GSM/GPRS Handset Power Rail | USB-Powered Peripheral Regulation |
|---|---|
Use Scenario: Regulating 5V USB input to 3.3V for baseband processor, SIM interface, and display driver in compact cellular modules. IC Role / Device Role / Timing Role: Primary LDO supplying core logic voltage; EN pin synchronized with modem power-up sequence. Use Value: 200mV dropout enables full 3.3V output even as USB voltage sags to 4.75V; 50µA IQ minimizes standby drain during sleep mode. |
Use Scenario: Providing clean 3.3V rail to USB-to-UART bridge ICs (e.g., CP2102) and EEPROMs in docking stations and adapters. IC Role / Device Role / Timing Role: Post-regulator isolating digital noise from host USB VBUS; BP pin decoupling suppresses reference noise affecting UART timing accuracy. Use Value: 70dB PSRR prevents USB data corruption caused by VBUS ripple; SOT25 footprint fits tight 10mm × 10mm board areas. |
| Battery-Powered Sensor Node | LAN Card Voltage Translation |
Use Scenario: Powering ultra-low-power microcontrollers (e.g., MSP430FRxx) and analog sensors from single AA/AAA cells in wireless IoT endpoints. IC Role / Device Role / Timing Role: Main system regulator with EN controlled by MCU to gate power during deep-sleep cycles. Use Value: 0.1µA shutdown current extends shelf life; ±2% accuracy ensures ADC reference stability across temperature. |
Use Scenario: Generating 3.3V from 5V PCI/PCIe slot power for PHY layer ICs and EEPROM configuration storage on network interface cards. IC Role / Device Role / Timing Role: Local point-of-load regulator replacing discrete Zener+transistor solutions; reduces component count and layout area. Use Value: Guaranteed 150mA output supports simultaneous PHY initialization and EEPROM read; thermal shutdown prevents overheating during hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 3.3V fixed output, 250mA rating, 6µA IQ - lower quiescent current but higher 600mV dropout at full load. | Preferred for energy-harvesting systems where IQ dominates lifetime; unsuitable for Li-ion systems requiring <3.5V minimum input. | Select when ultra-low IQ outweighs dropout penalty; verify thermal performance at 250mA in SOT23-3 package. |
| AP7315-33SG-7 | Pin-compatible successor with 250mA output, 180mV dropout, and improved 35µA IQ - marked "Not Recommended for New Design" per Diodes' notice. | Direct drop-in replacement if legacy stock exists; newer designs should use AP7315 series for enhanced efficiency and thermal margin. | Use only for second-source continuity; avoid for new designs due to obsolescence status and limited long-term availability. |
Compared with MCP1700-3302E/TO, AP7115-33WG-7 offers 40% lower dropout for battery-critical apps but trades 8× higher IQ; versus AP7315-33SG-7, it provides identical pinout and function but with higher dropout and IQ - making it suitable only for cost-sensitive legacy replacements.
Availability
AP7115-33WG-7 is available at Aetrix Electronics and suitable for GSM/GPRS handsets, USB peripherals, battery-powered sensor nodes, and LAN card designs requiring stable component supply with guaranteed 150mA output and industrial temperature range support.
Supply support for AP7115-33WG-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, computing, and consumer markets.
The AP7115 belongs to Diodes' low-quiescent-current LDO family, engineered specifically for extended battery life in portable communications equipment and peripheral devices operating across -40°C to +85°C ambient conditions.
FAQ
What is the maximum allowable input voltage for AP7115-33WG-7?
The absolute maximum input voltage is 5.5V, with recommended operating range from 2.5V to 5.5V. Exceeding 5.5V risks permanent damage to the internal PMOS pass device and bandgap reference circuitry, as confirmed by Absolute Maximum Ratings table in DS31333 Rev. 12-3.
Can AP7115-33WG-7 operate without the BP capacitor?
Yes, but output voltage noise increases significantly - typical output noise rises from 50µVrms (with 0.1µF BP capacitor) to >150µVrms without it. The BP pin bypasses the internal bandgap reference node; omitting the capacitor degrades PSRR and introduces low-frequency drift in precision analog sections.
Is AP7115-33WG-7 pin-compatible with AP7315-33SG-7?
Yes - both use identical SOT25 pinout (IN, GND, EN, BP, OUT) and share matching electrical characteristics for enable control, dropout, and thermal shutdown thresholds. However, AP7315-33SG-7 is marked "Not Recommended for New Design" in Diodes' documentation and offers improved specs.
What PCB layout practices ensure thermal reliability for AP7115-33WG-7?
Use minimum 2oz copper ground plane connected to Pin 2 (GND) and thermal pad (if present); implement ≥3 thermal vias (0.3mm diameter) under the package body; maintain ≥1mm clearance from adjacent heat sources; and follow Diodes' recommended SOT25 pad layout (X=0.55mm, Y=0.80mm, C1=2.40mm) to achieve θJA ≤200°C/W.
AP7115-33WG-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):
- 3.3V
- 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
AP7115-33WG-7 FAQ
1.How can I place an order for AP7115-33WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7115-33WG-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 AP7115-33WG-7 reliable?
The price and inventory of AP7115-33WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7115-33WG-7 is usually 5 days.
3.What payment methods are accepted for AP7115-33WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7115-33WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7115-33WG-7?
AP7115-33WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7115-33WG-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 AP7115-33WG-7?
For technical support, including AP7115-33WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7115-33WG-7 requirements.
6.How does Aetrix verify that AP7115-33WG-7 is sourced from the original manufacturer or authorized distributors?
All AP7115-33WG-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 AP7115-33WG-7 meets industry standards.
7.What is the process for return or replacement of AP7115-33WG-7?
All AP7115-33WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7115-33WG-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 AP7115-33WG-7 part is unused and in its original packaging.
Return procedure for AP7115-33WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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