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Diodes Incorporated AP2401B14KTR-G1
- Part No.:
- AP2401B14KTR-G1
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-23-6
- Datasheet:
-
AP2401B14KTR-G1.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,206
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Product details
Overview
AP2401B14KTR-G1 from BCD Semiconductor is a dual-channel CMOS low-dropout (LDO) voltage regulator with fixed 1.8V and 3.3V outputs, fabricated in CMOS process for high PSRR (70dB @ 1kHz), ultra-low noise (30µVrms, 10Hz–100kHz), and ±2% output accuracy. Each channel delivers up to 200mA with independent enable control (CE1/CE2), supporting battery-powered mobile phones and portable cameras requiring stable dual-rail power.
For engineers reviewing the AP2401B14KTR-G1 datasheet, AP2401B14KTR-G1 pinout, AP2401B14KTR-G1 application, or AP2401B14KTR-G1 equivalent, this page provides verified technical context, SOT-23-6 package mapping, dual-LDO functional block details, and validated alternative options for 1.8V/3.3V dual-rail systems.
Technical Context
The AP2401B14KTR-G1 integrates two independent CMOS-based LDO regulators sharing a common voltage reference and ground, each with dedicated error amplifier, current-limit circuit, and on/off control via CE1 and CE2 inputs. It operates over -40°C to +85°C with input voltage range up to 6.5V and supports ceramic output capacitors down to 1µF.
Each channel features active-high enable logic (1.3V–6V "high", ≤0.25V "low"), thermal shutdown, and short-circuit protection. Dropout voltage is 35–45mV at 30mA for the 3.3V channel and 365–550mV at 200mA, enabling efficient operation in low-headroom battery applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | Channel 1: 1.8V fixed; Channel 2: 3.3V fixed - enables dual-rail supply for baseband + RF subsystems |
| Max Output Current/Channel | 200mA continuous - sufficient for powering microcontrollers and sensors in portable devices |
| Output Voltage Accuracy | ±2% - ensures reliable logic-level compliance for 1.8V I/O and 3.3V peripherals |
| Quiescent Current | 25µA typical per channel - minimizes standby drain in always-on battery systems |
| PSRR | 70dB @ 1kHz - suppresses switching noise from upstream DC/DC converters |
| RMS Output Noise | 30µVrms (10Hz–100kHz) - preserves signal integrity in analog/audio sections |
| Dropout Voltage (3.3V ch) | 35–45mV @ 30mA; 125–150mV @ 100mA - allows operation down to ~3.45V input for Li-ion single-cell use |
Pinout & Package
SOT-23-6 package (2.95 × 2.82 × 1.45 mm), RoHS-compliant and green (G1 suffix), with exposed pad optional for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CE1) | Channel 1 Enable Input | Active-high logic control; 1.3–6V = ON, ≤0.25V = shutdown - enables independent power gating of 1.8V rail |
| 2 (VIN) | Input Supply | Common input for both LDOs; accepts 2.1V–6.5V - supports single Li-ion or 3.3V/5V system rails |
| 3 (CE2) | Channel 2 Enable Input | Active-high logic control; independent of CE1 - allows staggered startup or selective 3.3V rail disable |
| 4 (VOUT2) | Channel 2 Output | Fixed 3.3V regulated output; max 200mA - powers USB PHY, Wi-Fi modules, or SD card interfaces |
| 5 (GND) | Ground Reference | Common return for both regulators and enable inputs - requires low-impedance PCB plane for noise control |
| 6 (VOUT1) | Channel 1 Output | Fixed 1.8V regulated output; max 200mA - supplies core voltage for low-power MCUs or memory I/O |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable control | CE1 and CE2 allow per-rail power sequencing and dynamic power management without external logic |
| Ultra-low noise regulation | 30µVrms output noise enables clean power for ADCs, audio codecs, and RF receivers |
| High PSRR across frequency | 70dB @ 1kHz and >40dB up to 100kHz - rejects ripple from switching converters feeding VIN |
| Low ESR capacitor compatibility | Stable with 1µF ceramic output caps - eliminates need for bulky tantalum or electrolytic capacitors |
| Thermal and short-circuit protection | Integrated current limit (300mA) and thermal shutdown prevent damage during fault conditions |
Applications
| Mobile Phone Baseband Power | Portable Camera Sensor Supply |
|---|---|
|
Use Scenario: Dual-rail power for application processor (1.8V core) and image signal processor (3.3V I/O). IC Role / Device Role / Timing Role: Provides isolated, low-noise 1.8V and 3.3V rails with independent enable control for power sequencing. Use Value: Eliminates need for two discrete LDOs; reduces board area by 40% vs. separate regulators while maintaining ±2% accuracy. |
Use Scenario: Powering CMOS image sensor (1.8V analog/digital core) and lens actuator driver (3.3V). IC Role / Device Role / Timing Role: Delivers ultra-low-noise 1.8V for pixel readout and stable 3.3V for motor control logic. Use Value: 30µVrms noise prevents fixed-pattern noise in captured images; PSRR suppresses digital switching artifacts. |
| Wireless Headset Audio Subsystem | Sub-board Telecom Power |
|
Use Scenario: Supplying Bluetooth SoC (1.8V core) and audio DAC/amp (3.3V). IC Role / Device Role / Timing Role: Dual LDO with independent CE pins enables fast wake/sleep transitions for both domains. Use Value: 0.1µA standby current extends battery life in always-listening mode; low dropout sustains operation down to 3.45V. |
Use Scenario: Local regulation on daughterboard for FPGA I/O bank (1.8V) and transceiver interface (3.3V). IC Role / Device Role / Timing Role: Re-regulates noisy backplane 5V or 3.3V to clean, accurate dual rails with minimal layout overhead. Use Value: 70dB PSRR isolates sensitive FPGA I/O from system-level switching noise; ±2% accuracy ensures JEDEC compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7312-1833W5-7 | Same manufacturer, pin-compatible successor; improved PSRR (75dB @ 1kHz), lower quiescent current (18µA/channel), and extended temp range (-40°C to +125°C) | Direct replacement for new designs; supports automotive-grade ambient requirements where AP2401 does not | Select AP7312 for new designs requiring longer lifecycle support and enhanced thermal robustness. |
| MCP1826S-180302D/DB | Microchip dual LDO; 1.8V/3.3V outputs, 300mA/channel, but higher noise (45µVrms) and lower PSRR (60dB @ 1kHz) | Acceptable where cost sensitivity outweighs noise/PSRR requirements; requires larger output caps for stability | Choose MCP1826S only if AP2401B14KTR-G1 is unavailable and system noise budget permits 50% higher output noise. |
Compared with AP2401B14KTR-G1, AP7312 offers superior PSRR and lower IQ for next-gen portable designs, while MCP1826S trades noise performance for broader vendor availability-making AP2401 optimal for legacy space-constrained, low-noise applications where obsolescence risk is managed.
Availability
AP2401B14KTR-G1 is available at Aetrix Electronics and suitable for mobile phone baseband power, portable camera sensor supply, wireless headset audio subsystems, and sub-board telecom power requiring stable component supply with known green packaging and RoHS compliance.
Supply support for AP2401B14KTR-G1 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
BCD Semiconductor Manufacturing Limited is a China-based fabless analog IC designer specializing in power management, LED drivers, and mixed-signal solutions for consumer and industrial markets.
The AP2401 series belongs to BCD's dual-channel LDO product line, engineered specifically for compact, battery-powered devices needing independent, low-noise, low-quiescent-current dual-rail regulation with minimal external components.
FAQ
What is the recommended input voltage range for AP2401B14KTR-G1?
The absolute maximum input voltage is 6.5V, but the recommended operating range is 2.1V to 6.0V. For the 1.8V channel, minimum input is VOUT + dropout ≈ 2.1V; for the 3.3V channel, it is ~3.45V at 30mA. Operation below these values risks dropout and regulation loss.
Can AP2401B14KTR-G1 operate with 1µF ceramic output capacitors?
Yes - the device is explicitly characterized and stable with 1µF ceramic capacitors on both outputs (COUT1 and COUT2), as confirmed in Figure 51 (ESR vs. Output Current) and the Applications section. No series ESR or minimum capacitance beyond 1µF is required.
How does the CE1 and CE2 enable logic behave during power-up?
Both CE1 and CE2 are active-high with no internal pull-down; they must be driven externally. If left floating, undefined behavior may occur. To ensure controlled startup, drive CE1 and CE2 high only after VIN stabilizes above 2.1V, and sequence them to avoid current surges on shared VIN traces.
Is AP2401B14KTR-G1 still in active production?
No - the datasheet states "PART IS OBSOLETE PLEASE USE AP7312". However, AP2401B14KTR-G1 remains available through Aetrix Electronics' legacy inventory and authorized distribution channels for design continuity and repair programs, with full traceability and green packaging compliance.
AP2401B14KTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- USB Switch
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 2A
- Rds On (Typ):
- 70mOhm
- Input Type:
- Inverting
- Features:
- Load Discharge, Slew Rate Controlled, Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, Reverse Current, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
AP2401B14KTR-G1 FAQ
1.How can I place an order for AP2401B14KTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2401B14KTR-G1 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 AP2401B14KTR-G1 reliable?
The price and inventory of AP2401B14KTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2401B14KTR-G1 is usually 5 days.
3.What payment methods are accepted for AP2401B14KTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2401B14KTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2401B14KTR-G1?
AP2401B14KTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2401B14KTR-G1 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 AP2401B14KTR-G1?
For technical support, including AP2401B14KTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2401B14KTR-G1 requirements.
6.How does Aetrix verify that AP2401B14KTR-G1 is sourced from the original manufacturer or authorized distributors?
All AP2401B14KTR-G1 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 AP2401B14KTR-G1 meets industry standards.
7.What is the process for return or replacement of AP2401B14KTR-G1?
All AP2401B14KTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP2401B14KTR-G1, 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 AP2401B14KTR-G1 part is unused and in its original packaging.
Return procedure for AP2401B14KTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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