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Diodes Incorporated AP7346D-2825FS6-7
- Part No.:
- AP7346D-2825FS6-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-XFDFN Exposed Pad
- Datasheet:
-
AP7346D-2825FS6-7.pdf
- Description:
- IC REG LIN 2.5V/2.8V X2DFN1212-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,150
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Product details
Overview
AP7346D-2825FS6-7 from Diodes Incorporated is a dual-channel, high-accuracy current-limiting LDO regulator in X2-DFN1212-6 package, delivering fixed 2.8V and 2.5V outputs with ±1% accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It supports 1.7V–5.25V input, features independent enable pins (EN1/EN2), and targets low-power RF and camera power rails in portable electronics.
For engineers reviewing the AP7346D-2825FS6-7 datasheet, AP7346D-2825FS6-7 pinout, AP7346D-2825FS6-7 application, or AP7346D-2825FS6-7 equivalent, key selection criteria include dual-output voltage matching, channel-independent shutdown control, thermal performance in 1.2mm × 1.2mm DFN, and current-limit accuracy (157mA ±25mA) for load protection in space-constrained handheld designs.
Technical Context
The AP7346D-2825FS6-7 integrates two independent CMOS-based LDO regulators sharing a common VIN and GND, each with dedicated EN pin, fixed internal resistor network (2.8V/2.5V), and auto-discharge circuitry. Its architecture enables simultaneous or staggered channel activation without cross-regulation.
Each channel provides fold-back short-circuit protection (55mA typical), 0.22–0.29V dropout at 120mA (for VOUT > 3.0V), and 35µA quiescent current per active channel. The device operates across –40°C to +85°C ambient and maintains ±30ppm/°C output voltage temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 2.8V (Channel 1) and 2.5V (Channel 2), fixed via internal resistor network - eliminates external feedback components and saves PCB area. |
| Output Accuracy | ±1% at +25°C, ±1.5% over –40°C to +85°C - ensures stable core/logic rail compliance for sensitive RF ICs and image sensors. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC-DC converters feeding shared input rails. |
| Output Noise | 60µVrms (10Hz–100kHz) - meets low-noise requirements for analog front-ends in cameras and fingerprint modules. |
| Current Limit | 157mA ±25mA per channel - provides predictable overcurrent protection without requiring external current-sense resistors. |
| Quiescent Current | 35µA per active channel (EN high, no load) - extends battery life in always-on sensor subsystems. |
| Dropout Voltage | 0.25V (Ch2, 2.5V out, 120mA) - enables operation from single-cell Li-ion (3.0V min) down to 2.75V under full load. |
Pinout & Package
X2-DFN1212-6 package: 1.2mm × 1.2mm footprint, 0.4mm pitch, thermally enhanced exposed pad (not electrically connected to GND by default).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT1 | 2.8V regulated output - connects directly to load (e.g., RF transceiver VCC); requires local 0.47µF ceramic capacitor. |
| 2 | VOUT2 | 2.5V regulated output - powers image sensor analog core; independent from VOUT1 for sequencing control. |
| 3 | GND | Analog/digital ground reference - must be tied to low-impedance PCB ground plane; thermal pad may connect to GND for heat dissipation. |
| 4 | EN2 | Active-high enable for Channel 2 - drives high (>1.3V) to activate 2.5V rail; floating prohibited. |
| 5 | VIN | Shared input supply (1.7–5.25V) - requires 0.47µF decoupling capacitor placed within 2mm of pin. |
| 6 | EN1 | Active-high enable for Channel 1 - allows independent power-up sequencing of 2.8V rail (e.g., before VOUT2). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1 and EN2 support staggered power sequencing - critical for SoC boot order where 2.8V I/O must settle before 2.5V analog domain. |
| Built-in output discharge | Internal 50Ω N-channel FET discharges VOUT when EN is low - prevents floating outputs and ensures fast rail collapse during shutdown. |
| Low-noise, high-PSRR regulation | 60µVrms noise + 75dB PSRR at 1kHz - sustains signal integrity in RF front-end bias supplies without added ferrite beads. |
| Thermally optimized DFN | X2-DFN1212-6 with exposed thermal pad - achieves 210°C/W θJA (JEDEC High-K board), enabling 130mA/channel at +85°C ambient. |
| Wide input range & low IQ | 1.7–5.25V operation with 35µA/channel quiescent current - supports direct connection to buck converter outputs or single-cell batteries. |
Applications
| Fingerprint Module Power | RF Transceiver Bias Supply |
|---|---|
|
Use Scenario: Powering capacitive fingerprint sensor ASIC requiring clean, sequenced 2.8V I/O and 2.5V analog rails. IC Role / Device Role / Timing Role: Dual-LDO providing independent, low-noise voltage domains with programmable enable timing to meet sensor initialization sequence. Use Value: Eliminates need for discrete sequencing logic and reduces BOM count by integrating two precision LDOs in 1.44mm². |
Use Scenario: Supplying PA driver and LNA stages in Bluetooth/Wi-Fi combo modules where supply ripple directly impacts EVM. IC Role / Device Role / Timing Role: Low-noise 2.8V/2.5V regulator pair isolating RF analog blocks from noisy digital supply domains. Use Value: 75dB PSRR suppresses 1MHz–10MHz switching artifacts from system PMIC, improving transmit spectral purity. |
| Mobile Camera Sensor Core | Portable Media Player Audio Codec |
|
Use Scenario: Delivering stable 2.5V analog core and 2.8V I/O to CMOS image sensor with fast load transient response. IC Role / Device Role / Timing Role: Dual LDO with 120mA per channel and <100µs load transient recovery - maintains pixel clock stability during exposure changes. Use Value: 60µVrms noise prevents fixed-pattern noise in low-light imaging; 0.25V dropout enables use with aging batteries. |
Use Scenario: Powering stereo audio codec requiring isolated 2.5V AVDD and 2.8V DVDD rails to minimize digital coupling into analog paths. IC Role / Device Role / Timing Role: Independent dual-output LDO enabling separate power domains for ADC/DAC analog sections and digital interface logic. Use Value: Channel isolation and ±1% accuracy prevent THD degradation; 35µA IQ extends playback time in battery-powered players. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7345D-2825FS6-7 | Successor part with identical pinout, same 2.8V/2.5V outputs, but improved 130mA guaranteed current limit (vs. 157mA ±25mA) and tighter 0.5% initial accuracy. | Qualified for new designs; replaces AP7346 per Diodes' notice - supports same PCB layout but offers higher production yield confidence. | Select for new designs requiring AEC-Q200 alignment path and extended lifecycle assurance. |
| Torex XC6216D2825MR-G | 2.8V/2.5V dual LDO in SOT-26; 100mA per channel, 65dB PSRR at 1kHz, 45µVrms noise - lower PSRR and noise than AP7346, no built-in discharge. | Larger 2.9mm × 2.8mm footprint; lacks independent EN pins - both channels share single enable, limiting sequencing flexibility. | Consider only if board space permits larger package and sequencing requirements are minimal. |
Compared with AP7346D-2825FS6-7, the AP7345D-2825FS6-7 delivers tighter accuracy and guaranteed current limit in identical form factor, while the XC6216D2825MR-G trades size and feature set for broader distributor availability - making the AP7345D optimal for new designs and the AP7346 suitable only for legacy replacement.
Availability
AP7346D-2825FS6-7 is available at Aetrix Electronics and suitable for fingerprint modules, RF transceiver biasing, and mobile camera sensor power management requiring stable component supply across industrial and consumer production programs.
Supply support for AP7346D-2825FS6-7 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 connectivity solutions for high-volume electronics markets.
The AP7346 belongs to Diodes' high-accuracy dual-LDO product line, designed specifically for multi-rail power delivery in space-constrained portable devices where sequencing, noise, and thermal density are critical constraints.
FAQ
What is the thermal pad connection requirement for AP7346D-2825FS6-7?
The exposed thermal pad on the X2-DFN1212-6 package must be connected to a large copper pour on the PCB for heat dissipation. Diodes recommends connecting it to GND, though it may be left floating if thermal performance is sufficient. It must not serve as the sole GND electrode - dedicated GND pin (Pin 3) remains the primary return path.
Can AP7346D-2825FS6-7 operate with only one channel enabled?
Yes - EN1 and EN2 are fully independent. Driving EN1 high and EN2 low activates only the 2.8V output (VOUT1), drawing ~35µA quiescent current, while VOUT2 remains off with <1.0µA standby current. This enables dynamic rail gating in battery-sensitive applications.
Is AP7346D-2825FS6-7 qualified for automotive applications?
No - the AP7346 series is not AEC-Q100 qualified. Diodes explicitly states that automotive-grade variants require specific change control, PPAP capability, and IATF 16949 manufacturing - none of which apply to this part. Use only in commercial/industrial portable equipment.
What output capacitor value is recommended for stable operation?
A minimum 0.47µF ceramic capacitor is required per output (VOUT1 and VOUT2), placed within 2mm of respective pins. For loads with >50mA step changes, Diodes recommends adding a 10µF low-ESR bulk capacitor in parallel to maintain <30mV load regulation error and ensure stability across temperature.
AP7346D-2825FS6-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 2.5V, 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 120mA, 0.3V @ 120mA
- Current - Output:
- 130mA, 130mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1212-6
AP7346D-2825FS6-7 FAQ
1.How can I place an order for AP7346D-2825FS6-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7346D-2825FS6-7 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 AP7346D-2825FS6-7 reliable?
The price and inventory of AP7346D-2825FS6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7346D-2825FS6-7 is usually 5 days.
3.What payment methods are accepted for AP7346D-2825FS6-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7346D-2825FS6-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7346D-2825FS6-7?
AP7346D-2825FS6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7346D-2825FS6-7 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 AP7346D-2825FS6-7?
For technical support, including AP7346D-2825FS6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7346D-2825FS6-7 requirements.
6.How does Aetrix verify that AP7346D-2825FS6-7 is sourced from the original manufacturer or authorized distributors?
All AP7346D-2825FS6-7 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 AP7346D-2825FS6-7 meets industry standards.
7.What is the process for return or replacement of AP7346D-2825FS6-7?
All AP7346D-2825FS6-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7346D-2825FS6-7, 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 AP7346D-2825FS6-7 part is unused and in its original packaging.
Return procedure for AP7346D-2825FS6-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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