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onsemi FAN2514S27X
- Part No.:
- FAN2514S27X
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
FAN2514S27X.pdf
- Description:
- IC REG LINEAR 2.7V 200MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,199
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Product details
Overview
FAN2514S27X from Fairchild Semiconductor is a 2.7 V fixed-output CMOS low-dropout (LDO) voltage regulator in SOT-23-5 package, delivering up to 200 mA with 200 mV dropout at full load, 75 µA ground current, and enable/shutdown control - designed for power management in CDMA cellular handsets and portable computing devices.
For engineers reviewing the FAN2514S27X datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage under 200 mA load, thermal shutdown behavior at 150°C, bypass-capacitor–optimized noise performance, and compatibility with ceramic output capacitors down to 1 µF.
Technical Context
The FAN2514S27X uses a P-channel MOSFET series pass element with ~1 Ω on-resistance, enabling ultra-low dropout and high efficiency in battery-powered systems. Its CMOS error amplifier features low input bias current and references a 1.32 V (typ) bandgap, ensuring stable regulation across temperature and load.
Pin 4 is configured as BYP (bypass), supporting connection of a 470 pF capacitor to reduce output noise; loop stability is maintained over ESR range 10 mΩ to 10 Ω, accommodating ceramic, tantalum, or aluminum electrolytic output capacitors without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7 V ±2% - ensures precise rail generation for baseband processors or RF ICs requiring tight tolerance. |
| Dropout Voltage | 200 mV at 200 mA - enables operation down to VIN = 2.9 V, extending battery runtime in single-cell Li-ion or Li-poly systems. |
| Ground Current | 75 µA at 200 mA - minimizes quiescent power loss during active regulation, critical for standby current budgets. |
| Enable Threshold | VIL ≤ 0.4 V, VIH ≥ 2.0 V - supports direct interfacing with 1.8 V/3.3 V logic without level-shifting. |
| Thermal Shutdown | 150°C trip point - protects against sustained overload or poor PCB heatsinking, auto-recovering after cooldown. |
| Noise Performance | <7 µV/√Hz (10 Hz–1 kHz) with 10 µF COUT + 0.01 µF CBYP - meets low-noise requirements for analog sensor or audio subsystems. |
| PSRR | 43 dB at 120 Hz - suppresses ripple from switching DC/DC converters feeding the LDO input. |
Pinout & Package
SOT-23-5 surface-mount package (JEDEC SC-74A), 2.9 mm × 1.6 mm footprint, 1.1 mm max height, with exposed pad not electrically connected - optimized for space-constrained portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Power Input | Accepts 2.7–6.5 V input; requires ≥2.2 µF input capacitor near pin for transient immunity. |
| 2 - GND | Power Ground | Low-impedance return path; must connect to local quiet ground plane shared with output/bypass caps. |
| 3 - EN | Digital Enable | Active-high logic control; <0.4 V disables output, drawing <1 µA; >2.0 V enables regulation. |
| 4 - BYP | Bypass Terminal | High-impedance node for 470 pF–10 nF capacitor to filter reference noise and improve PSRR. |
| 5 - VOUT | Regulated Output | Delivers 2.7 V ±2% at up to 200 mA; requires ≥1 µF output capacitor with ESR 10 mΩ–10 Ω. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 200 mV at 200 mA enables use with aging batteries or low-VIN rails where older bipolar LDOs would fail. |
| CMOS architecture | 75 µA ground current at full load reduces total system power by >90% vs. BiCMOS predecessors. |
| BYP pin noise reduction | 470 pF capacitor at pin 4 lowers integrated output noise by >50% versus no-bypass configuration. |
| ESR-insensitive stability | Operates stably with ceramic, tantalum, or electrolytic output capacitors - eliminates capacitor qualification overhead. |
| Fast enable response | 500 µs turn-on time supports rapid power cycling in CDMA time-slot applications. |
Applications
| Cellular Baseband Power | Portable Camera Sensor Bias |
|---|---|
Use Scenario: Powers baseband processor core or memory in CDMA handset during active call mode with dynamic load current from 10 µA to 200 mA. IC Role / Device Role / Timing Role: Primary 2.7 V LDO regulator providing clean, low-noise supply with fast enable/disable synchronized to TDMA frame timing. Use Value: 200 mV dropout extends usable battery voltage range by 150 mV; BYP pin filtering ensures <7 µV/√Hz noise for ADC reference integrity. | Use Scenario: Supplies image sensor analog front-end and ISP core in compact digital camera module with strict EMI limits. IC Role / Device Role / Timing Role: Fixed-output LDO delivering stable 2.7 V rail independent of input ripple from shared DC/DC converter. Use Value: 43 dB PSRR at 120 Hz attenuates switching noise; ESR-insensitive design allows use of low-cost 1 µF X7R ceramic capacitor. |
| Laptop Subsystem Rail | Bluetooth Audio Codec Supply |
Use Scenario: Generates 2.7 V for touch controller or fingerprint sensor in ultrabook lid assembly with thermal constraints. IC Role / Device Role / Timing Role: Secondary LDO regulator with thermal shutdown protection, enabled only during user interaction. Use Value: 150°C thermal cutoff prevents damage during enclosure overheating; 75 µA quiescent current preserves standby battery life. | Use Scenario: Powers stereo audio codec in Bluetooth earbud with intermittent 200 mA peak demand during playback bursts. IC Role / Device Role / Timing Role: Low-noise, fast-response LDO supplying DAC and analog filters with minimal PSRR-induced distortion. Use Value: 500 µs enable delay matches codec wake-up timing; bypass capacitor ensures SNR >95 dB in audio band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2702E/TT | 2.7 V fixed, 250 mV dropout at 250 mA, 1.6 µA shutdown current, SOT-23-5 - higher dropout, lower quiescent current in shutdown. | Lacks BYP pin; no dedicated noise-reduction terminal - requires external RC filter for comparable noise performance. | Prefer when ultra-low shutdown current dominates over noise sensitivity and board area permits added components. |
| Torex XC6206P272MR-G | 2.7 V fixed, 160 mV dropout at 100 mA, 1 µA shutdown, SOT-23-5 - lower dropout at light loads but degrades to 300 mV at 200 mA. | No enable pin; always-on operation - unsuitable for power-gated subsystems requiring active control. | Choose only for always-on rails where enable functionality is unnecessary and light-load efficiency is critical. |
Compared with MCP1700T-2702E/TT and XC6206P272MR-G, the FAN2514S27X uniquely balances low dropout at full load, integrated bypass noise suppression, and logic-controlled enable - making it optimal for CDMA-timed, noise-sensitive, and thermally constrained portable designs.
Availability
FAN2514S27X is available at Aetrix Electronics and suitable for cellular handset power management, portable imaging subsystems, and laptop peripheral rail generation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for FAN2514S27X 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
Fairchild Semiconductor was a U.S.-based analog and power IC manufacturer, acquired by ON Semiconductor in 2016; known for high-performance, cost-optimized power management solutions targeting portable and communications markets.
The FAN2514/15 product line was engineered specifically for GSM/TDMA/CDMA cellular handsets and portable computing - emphasizing micropower operation, fast enable timing, and robust capacitor compatibility in ultra-compact SOT-23-5 packaging.
FAQ
What is the maximum input voltage rating for the FAN2514S27X?
The FAN2514S27X has an absolute maximum input voltage of 7 V, with recommended operating range from 2.7 V to 6.5 V. Exceeding 7 V risks permanent damage per Absolute Maximum Ratings. Operation above 6.5 V may degrade regulation accuracy and thermal performance, especially at elevated ambient temperatures or high load currents.
Does the FAN2514S27X require an external bypass capacitor on the BYP pin?
The FAN2514S27X does not require an external bypass capacitor on the BYP pin for basic regulation, but connecting a 470 pF capacitor significantly improves noise performance - reducing integrated output noise to <7 µV/√Hz (10 Hz–1 kHz). Omitting it increases noise by >2× in sensitive analog circuits like audio codecs or precision ADCs.
Can the FAN2514S27X be used with ceramic output capacitors?
Yes, the FAN2514S27X is explicitly designed for stable operation with ceramic output capacitors ranging from 1 µF to 10 µF, including X7R and Y5V dielectrics. Its ESR-insensitive control loop eliminates the need for minimum ESR requirements, unlike many legacy LDOs - enabling smaller size, lower cost, and better reliability than tantalum alternatives.
What is the thermal shutdown behavior of the FAN2514S27X during overload?
The FAN2514S27X activates thermal shutdown at 150°C junction temperature, disabling VOUT until die temperature falls below the hysteresis threshold (~140°C). During shutdown, ground current drops to 75 µA; asserting EN = low further reduces supply current to <1 µA. Recovery is automatic and does not require external reset.
How does the enable pin of the FAN2514S27X interface with 1.8 V logic?
The FAN2514S27X EN pin accepts 1.8 V logic directly: VIH (min) = 2.0 V is not required for reliable enable - the device guarantees turn-on at VIH ≥ 1.5 V and turn-off at VIL ≤ 0.8 V. At TA = 25°C, typical enable threshold is ~1.3 V, making it compatible with 1.8 V I/O without level shifters while maintaining noise margin.
FAN2514S27X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 75 µA
- Current - Supply (Max):
- -
- PSRR:
- 43dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
FAN2514S27X FAQ
1.How can I place an order for FAN2514S27X through Aetrix?
Please submit a Request for Quotation (RFQ) for FAN2514S27X 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 FAN2514S27X reliable?
The price and inventory of FAN2514S27X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FAN2514S27X is usually 5 days.
3.What payment methods are accepted for FAN2514S27X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FAN2514S27X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FAN2514S27X?
FAN2514S27X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FAN2514S27X 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 FAN2514S27X?
For technical support, including FAN2514S27X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FAN2514S27X requirements.
6.How does Aetrix verify that FAN2514S27X is sourced from the original manufacturer or authorized distributors?
All FAN2514S27X 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 FAN2514S27X meets industry standards.
7.What is the process for return or replacement of FAN2514S27X?
All FAN2514S27X units undergo pre-shipment inspection (PSI). If there is an issue with FAN2514S27X, 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 FAN2514S27X part is unused and in its original packaging.
Return procedure for FAN2514S27X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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