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Diodes Incorporated AP7115-33SEG-7
- Part No.:
- AP7115-33SEG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
AP7115-33SEG-7.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:5,665
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Product details
Overview
AP7115-33SEG-7 from Diodes Incorporated is a 150mA fixed-output (3.3V) 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 handheld devices requiring stable, low-noise 3.3V rail generation.
For engineers reviewing the AP7115-33SEG-7 datasheet, AP7115-33SEG-7 pinout, AP7115-33SEG-7 application, or AP7115-33SEG-7 equivalent, key selection criteria include dropout performance at 150mA, EN-controlled power sequencing, BP-bypass noise reduction capability, and SOT353 thermal resistance (θJA = 337°C/W) in space-constrained designs.
Technical Context
The AP7115-33SEG-7 uses a PMOS pass element with internal bandgap reference and error amplifier to regulate output voltage. Its enable (EN) pin provides active-high logic control, while the BP pin accepts a 0.1µF capacitor to suppress reference noise and improve output voltage stability.
Protection circuitry includes foldback current limiting (250mA typ.), thermal shutdown activation at +150°C, and short-circuit survivability. The device operates across 2.5V–5.5V input range and maintains regulation down to 200mV headroom at 150mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% - ensures precise rail for 3.3V logic, USB peripherals, and RF front-end biasing |
| Dropout Voltage | 200mV @ 150mA - enables operation from single-cell Li-ion (3.0V min) or 3.3V system rails with margin |
| Quiescent Current | 50µA typ. - extends battery life in always-on monitoring circuits and sleep-mode subsystems |
| PSRR | 70dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input |
| Thermal Shutdown | +150°C activation - protects against sustained overload or poor PCB heatsinking in sealed enclosures |
| Enable Threshold | VIH = 2.0V, VIL = 0.7V - compatible with 1.8V/3.3V GPIO without level-shifting in portable SoC designs |
| Output Noise | 50µVrms (10Hz–100kHz) - suitable for analog sensors, ADC references, and low-phase-noise clock buffers |
Pinout & Package
SOT353 (5-pin, 2.15mm × 1.30mm × 0.90mm) surface-mount package with exposed pad not electrically connected; optimized for low-profile portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input voltage supply | Accepts 2.5V–5.5V; requires 1µF ceramic decoupling to GND for stability |
| 2 GND | Power ground reference | Common return path for input/output capacitors and BP bypass; must connect to low-impedance ground plane |
| 3 EN | Active-high enable control | Pull ≥2.0V to enable regulation; tie to VIN if always-on operation required |
| 4 BP | Bandgap reference bypass | 0.1µF capacitor to GND reduces output voltage noise and improves PSRR at high frequencies |
| 5 OUT | Regulated 3.3V output | Delivers up to 150mA; requires ≥1µF ceramic output capacitor with ESR <1Ω for loop stability |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout architecture | 200mV @ 150mA enables use with weak or aging batteries in handheld devices |
| Bandgap bypass (BP) pin | 0.1µF capacitor reduces output noise by filtering reference node-critical for precision analog rails |
| Fast transient response | Maintains <±2% output deviation during 10–90% load steps-supports burst-mode digital loads |
| Green packaging | SOT353 meets RoHS, halogen-free, and antimony-free standards (Br/Cl <900ppm, Sb <1000ppm) |
| Integrated protection | Current limit (250mA), thermal shutdown (+150°C), and short-circuit survival prevent field failures |
Applications
| Wireless Communication Modules | GSM/GPRS Handsets |
|---|---|
|
Use Scenario: Powering baseband processor I/O banks and RF transceiver bias rails in compact cellular modules. IC Role / Device Role / Timing Role: Primary 3.3V LDO delivering clean, sequenced power under dynamic load conditions. Use Value: 50µA quiescent current extends standby time; 70dB PSRR isolates sensitive RF sections from noisy DC/DC sources. |
Use Scenario: Supplying SIM card interface, display driver, and audio codec in dual-SIM feature phones. IC Role / Device Role / Timing Role: Secondary regulated rail generator with EN-controlled power-up sequencing synchronized to baseband reset. Use Value: 200mV dropout allows direct connection to 3.6V Li-ion battery; ±2% accuracy ensures reliable digital logic thresholds. |
| Battery-Powered IoT Sensors | PC Peripheral Cards |
|
Use Scenario: Providing stable 3.3V to ultra-low-power microcontrollers and environmental sensors in coin-cell–powered nodes. IC Role / Device Role / Timing Role: Always-on voltage regulator with BP-bypassed reference for ADC reference stability. Use Value: 50µA IQ minimizes self-discharge; low temperature drift (50ppm/°C) maintains sensor calibration across -40°C to +85°C. |
Use Scenario: Generating 3.3V for USB PHY, EEPROM, and LED indicators on PCIe-based LAN or storage add-in cards. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupled from main system rail noise. Use Value: Fast transient response handles USB suspend/resume current spikes; SOT353 footprint saves board area in dense card layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7315-33SG-7 | Successor device with improved PSRR (75dB), lower IQ (35µA), and same SOT353 footprint | Recommended for new designs requiring longer battery life and higher noise immunity | Select AP7315-33SG-7 when designing new products; AP7115-33SEG-7 remains viable for legacy BOM continuity |
| MCP1700T-3302E/TT | 100mA rated, 6µA IQ, no BP pin, SOT23-5 package (larger footprint, higher θJA) | Suitable only for lower-current, ultra-low-power applications where noise sensitivity is minimal | Choose only if load current ≤100mA and BP-bypassed noise reduction is unnecessary |
Compared with AP7315-33SG-7, the AP7115-33SEG-7 offers proven field reliability but higher quiescent current and lower PSRR; versus MCP1700T-3302E/TT, it delivers 50% more output current and superior noise performance at the cost of 15µA higher IQ.
Availability
AP7115-33SEG-7 is available at Aetrix Electronics and suitable for wireless communication modules, GSM/GPRS handsets, and battery-powered IoT sensors requiring stable component supply with long-term industrial availability.
Supply support for AP7115-33SEG-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 high-volume consumer and industrial markets.
The AP7115 belongs to Diodes' low-quiescent-current LDO family, designed specifically for space-constrained, battery-operated portable electronics needing reliable, low-noise voltage regulation with integrated protection.
FAQ
What is the minimum input voltage required for regulation at 150mA output?
The AP7115-33SEG-7 requires VIN ≥ VOUT + VDO = 3.3V + 0.2V = 3.5V to maintain regulation at full 150mA load. At lighter loads, dropout decreases proportionally-e.g., 100mV at 75mA-allowing operation down to 3.4V input under typical conditions.
Can the BP pin be left unconnected if low-noise performance is not critical?
Yes, the BP pin may be left floating or tied directly to GND if output noise specifications permit. However, omitting the 0.1µF BP capacitor reduces PSRR by ~10dB above 10kHz and increases output voltage drift under temperature variation, per datasheet characterization.
Is the AP7115-33SEG-7 pin-compatible with other Diodes LDOs in SOT353?
No-pin assignments differ across Diodes' SOT353 LDO families. For example, the AP7315-33SG-7 shares identical pinout (IN-EN-BP-OUT-GND), but the AP2204K-3.3TRG1 uses IN-GND-EN-OUT-NC. Always verify pin mapping using the specific device's datasheet diagram.
Does thermal shutdown cause latch-off or automatic recovery?
Thermal shutdown is non-latching: when junction temperature exceeds +150°C, the pass element turns off; regulation resumes automatically once junction cools by ~30°C (to ~120°C). This hysteresis prevents oscillation during marginal thermal conditions.
AP7115-33SEG-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):
- 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-353
AP7115-33SEG-7 FAQ
1.How can I place an order for AP7115-33SEG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7115-33SEG-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 AP7115-33SEG-7 reliable?
The price and inventory of AP7115-33SEG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7115-33SEG-7 is usually 5 days.
3.What payment methods are accepted for AP7115-33SEG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7115-33SEG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7115-33SEG-7?
AP7115-33SEG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7115-33SEG-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 AP7115-33SEG-7?
For technical support, including AP7115-33SEG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7115-33SEG-7 requirements.
6.How does Aetrix verify that AP7115-33SEG-7 is sourced from the original manufacturer or authorized distributors?
All AP7115-33SEG-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 AP7115-33SEG-7 meets industry standards.
7.What is the process for return or replacement of AP7115-33SEG-7?
All AP7115-33SEG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7115-33SEG-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 AP7115-33SEG-7 part is unused and in its original packaging.
Return procedure for AP7115-33SEG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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