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Diodes Incorporated AP7115-28SEG-7
- Part No.:
- AP7115-28SEG-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
AP7115-28SEG-7.pdf
- Description:
- IC REG LINEAR 2.8V 150MA SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:6,184
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Product details
Overview
AP7115-28SEG-7 from Diodes Incorporated is a 150mA fixed-output (2.8V) 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 wireless handsets and portable peripherals.
For engineers reviewing the AP7115-28SEG-7 datasheet, AP7115-28SEG-7 pinout, AP7115-28SEG-7 application, or AP7115-28SEG-7 equivalent, key selection criteria include dropout voltage under 150mA load, EN-controlled shutdown behavior, BP bypass capacitor requirements, and thermal resistance (θJA = 337°C/W) in SOT353 layout.
Technical Context
The AP7115-28SEG-7 uses a PMOS pass element with bandgap-referenced error amplifier to regulate output voltage. Its enable input (EN) directly controls the pass transistor gate via internal logic, allowing fast startup (<100µs typical) and <1µA shutdown current.
Bandgap bypass (BP) pin accepts a 0.1µF ceramic capacitor to suppress reference noise, improving output voltage stability. The device maintains regulation across -40°C to +85°C ambient with 50ppm/°C output voltage tempco and 70dB PSRR at 1kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±2% - ensures stable core voltage for 2.8V I/O rails in GSM/GPRS baseband ICs |
| Max Output Current | 150mA guaranteed - supports moderate-power RF front-end biasing and sensor interface circuits |
| Dropout Voltage | 200mV typ. @ 150mA - enables operation down to 3.0V input when powering 2.8V loads from single Li-ion cells |
| Quiescent Current | 50µA typ. @ no load - extends battery life in always-on standby modes of handheld devices |
| PSRR | 70dB @ 1kHz - attenuates switching noise from adjacent DC-DC converters in compact PCB layouts |
| Thermal Shutdown | Triggers at +150°C junction - protects against sustained overload in sealed enclosures without forced airflow |
| Enable Threshold | VIH = 2.0V, VIL = 0.7V - compatible with 1.8V/3.3V GPIO without level-shifting in modern SoC designs |
Pinout & Package
SOT353 (5-pin, 2.15mm × 2.10mm × 1.00mm) surface-mount package with exposed pad not electrically connected; RoHS-compliant, halogen-free "Green" molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Voltage Input | Accepts 2.5–5.5V supply; requires 1µF ceramic input capacitor to GND for stability |
| 2 GND | Ground Reference | Primary return path for load current and internal bias; connects to PCB ground plane |
| 3 EN | Enable Control | Active-high digital input; drives internal pass transistor gate; <1µA leakage in shutdown |
| 4 BP | Bandgap Bypass | Connects 0.1µF ceramic capacitor to GND to reduce reference noise and improve PSRR |
| 5 OUT | Voltage Output | Delivers regulated 2.8V; stable with ≥1µF ceramic output capacitor and ESR ≤1Ω |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Architecture | 200mV @ 150mA enables >93% efficiency from 3.0V input to 2.8V output |
| Ultra-Low Quiescent Current | 50µA typ. minimizes standby power loss in battery-gated subsystems |
| Integrated Protection | Current limit (250mA typ.), short-circuit safe operation, and thermal shutdown prevent field failures |
| High PSRR & Low Noise | 70dB PSRR + 50µVRMS output noise support clean analog/RF supply domains |
| Small-Signal Stability | Stable with 1µF ceramic output capacitors and ESR as low as 0.01Ω per load current curve |
Applications
| GSM/GPRS Baseband Power | Wireless Peripheral Regulation |
|---|---|
Use Scenario: Supplies 2.8V to baseband processor I/O banks and RF transceiver control circuitry in dual-mode cellular handsets. IC Role / Device Role / Timing Role: Primary LDO for noise-sensitive digital I/O rail; EN synchronized to modem sleep/wake cycles. Use Value: 50µA quiescent current extends talk time by >8% versus legacy 120µA LDOs; 200mV dropout preserves headroom during Li-ion discharge to 3.2V. |
Use Scenario: Powers Bluetooth/Wi-Fi module logic and sensor interface ICs on USB-connected dongles and docking stations. IC Role / Device Role / Timing Role: Secondary LDO isolated from noisy host USB 5V rail; BP capacitor suppresses conducted EMI from USB data lines. Use Value: 70dB PSRR rejects USB switcher ripple; ±2% output accuracy ensures reliable UART/SPI timing margins at 2.8V logic levels. |
| Battery-Powered Sensor Node | Optical Drive Interface |
Use Scenario: Regulates 2.8V for MEMS accelerometer, temperature sensor, and BLE radio in coin-cell–powered IoT edge nodes. IC Role / Device Role / Timing Role: Always-on LDO with EN tied high; low IQ enables multi-year battery life in periodic wake-up architectures. Use Value: 50µA IQ reduces average current draw by 40% vs. 85µA alternatives; thermal shutdown prevents damage during enclosure overheating events. |
Use Scenario: Supplies 2.8V to laser diode driver control logic and spindle motor feedback circuitry in slim DVD-ROM modules. IC Role / Device Role / Timing Role: Precision LDO for analog front-end biasing; BP bypass stabilizes reference during rapid optical head seek transients. Use Value: 50ppm/°C tempco maintains <±10mV drift over -10°C to +60°C operating range; fast transient response limits voltage sag during motor commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2802E/TO | 300mV dropout @ 150mA; 1.6µA IQ; SOT23-5 package | Lacks BP pin; lower PSRR (60dB); higher dropout reduces usable input range | Prefer for ultra-low-IQ systems where 2.8V rail is only active intermittently |
| AP7315-28SG-7 | Same SOT353 footprint; 250mA output; 1.2µA IQ; no EN pin | Non-enable variant; higher current capability but no dynamic power gating | Choose when system-level enable control is handled upstream or unnecessary |
Compared with MCP1700-2802E/TO and AP7315-28SG-7, the AP7115-28SEG-7 uniquely balances low dropout (200mV), mid-range IQ (50µA), and integrated EN/BP functionality in SOT353-making it optimal for space-constrained, battery-gated 2.8V rails requiring both efficiency and noise immunity.
Availability
AP7115-28SEG-7 is available at Aetrix Electronics and suitable for GSM/GPRS handset design, wireless peripheral development, and battery-powered sensor node production requiring stable component supply and long-term lifecycle assurance.
Supply support for AP7115-28SEG-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 consumer, industrial, and automotive markets.
The AP7115 belongs to Diodes' precision LDO family designed specifically for battery-powered portable electronics-emphasizing low dropout, ultra-low quiescent current, and robust protection in miniature packages.
FAQ
What is the minimum input voltage required for AP7115-28SEG-7 to maintain 2.8V regulation at 150mA?
The AP7115-28SEG-7 requires VIN ≥ VOUT + VDO = 2.8V + 0.2V = 3.0V to sustain regulation at full 150mA load. Below 3.0V input, output voltage drops linearly with input; the 200mV dropout is typical at 25°C and may rise to 300mV at temperature extremes or end-of-life.
Can the BP pin be left unconnected if low-noise performance is not critical?
No-leaving the BP pin floating violates the Absolute Maximum Rating for VBP (-0.3V to 5.5V) and risks instability. If noise suppression is not required, connect a 0.1µF ceramic capacitor from BP to GND as specified; omitting it degrades PSRR by up to 20dB and increases output noise by ~30µVRMS.
How does thermal shutdown behave during continuous overload?
When junction temperature exceeds +150°C, the AP7115-28SEG-7 disables the pass transistor until temperature falls by ~30°C. During repeated cycling, average output current is limited to ~60mA at TA = 25°C on a standard FR-4 board-designers must verify θJA (337°C/W for SOT353) and derate power accordingly.
Is AP7115-28SEG-7 pin-compatible with AP7315-28SG-7?
Yes-both use identical SOT353 pinout (IN, GND, EN/BP, BP/NC, OUT), but AP7315-28SG-7 has no enable function (EN pin internally tied high) and no BP pin (BP pin is no-connect). Direct replacement requires external pull-up of EN and removal of BP capacitor.
AP7115-28SEG-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):
- 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-353
AP7115-28SEG-7 FAQ
1.How can I place an order for AP7115-28SEG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7115-28SEG-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 AP7115-28SEG-7 reliable?
The price and inventory of AP7115-28SEG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7115-28SEG-7 is usually 5 days.
3.What payment methods are accepted for AP7115-28SEG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7115-28SEG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7115-28SEG-7?
AP7115-28SEG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7115-28SEG-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 AP7115-28SEG-7?
For technical support, including AP7115-28SEG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7115-28SEG-7 requirements.
6.How does Aetrix verify that AP7115-28SEG-7 is sourced from the original manufacturer or authorized distributors?
All AP7115-28SEG-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 AP7115-28SEG-7 meets industry standards.
7.What is the process for return or replacement of AP7115-28SEG-7?
All AP7115-28SEG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7115-28SEG-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 AP7115-28SEG-7 part is unused and in its original packaging.
Return procedure for AP7115-28SEG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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