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Diodes Incorporated AP7346D-3612FS6-7
- Part No.:
- AP7346D-3612FS6-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-XFDFN Exposed Pad
- Datasheet:
-
AP7346D-3612FS6-7.pdf
- Description:
- IC REG LIN 1.2V/3.6V X2DFN1212-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,970
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Product details
Overview
AP7346D-3612FS6-7 from Diodes Incorporated is a dual-channel, high-accuracy current-limiting LDO regulator in X2-DFN1212-6 package, delivering fixed 3.6V and 1.2V outputs with ±1% voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It features independent enable pins (EN1/EN2), low 35µA quiescent current per active channel, and integrated auto-discharge functionality-designed for RF supply rails and camera modules in space-constrained portable electronics.
For engineers reviewing the AP7346D-3612FS6-7 datasheet, AP7346D-3612FS6-7 pinout, AP7346D-3612FS6-7 application, or AP7346D-3612FS6-7 equivalent, key selection criteria include dual-output voltage pairing, channel-independent shutdown control, thermal performance in 1.2mm × 1.2mm DFN, current-limit accuracy (157mA ±25mA), and compatibility with low-ESR ceramic capacitors down to 0.47µF.
Technical Context
The AP7346D-3612FS6-7 integrates two independent CMOS-based LDO regulators sharing a single VIN input but featuring separate EN1/EN2 controls and VOUT1/VOUT2 outputs. Each channel includes a precision voltage reference, error amplifier, current-limit circuit, and NMOS pass transistor with 50Ω on-resistance for auto-discharge when disabled.
It operates across 1.7V–5.25V input range with dropout voltages ranging from 0.22V (3.0V < VOUT ≤ 3.6V, IOUT = 120mA) to 0.59V (VOUT ≤ 1.2V), and supports stable operation with 0.47µF ceramic output capacitors-enabling compact, low-noise power delivery for sensitive analog and RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT1 / VOUT2 | 3.6V / 1.2V fixed outputs-eliminates external feedback resistors and ensures precise rail generation for mixed-voltage SoC interfaces. |
| Voltage Accuracy | ±1% at +25°C; ±1.5% over −40°C to +85°C-supports tight-tolerance logic and sensor biasing without calibration. |
| PSRR | 75dB at 1kHz-effectively suppresses switching noise from upstream DC-DC converters feeding RF or ADC sections. |
| Output Noise | 60µVrms (10Hz–100kHz)-meets low-noise requirements for image sensors and RF front-end biasing. |
| Quiescent Current | 35µA per active channel-enables ultra-low-power standby modes in battery-operated fingerprint and camera modules. |
| Current Limit | 157mA ±25mA per channel-provides predictable short-circuit protection while allowing margin for peak load transients. |
| Package | X2-DFN1212-6 (1.2mm × 1.2mm, 0.4mm height)-enables high-density PCB layouts in slim mobile and wearable form factors. |
Pinout & Package
X2-DFN1212-6 package with exposed thermal pad (not electrically connected to GND by default); requires PCB copper area for thermal dissipation, optionally tied to GND plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT1 | 3.6V regulated output-powers core logic or I/O rails requiring stable 3.6V supply. |
| 2 | VOUT2 | 1.2V regulated output-supplies low-voltage digital cores (e.g., ARM Cortex-M peripherals) or analog sensor references. |
| 3 | GND | Common ground reference for both regulators-must be low-impedance connection to minimize noise coupling. |
| 4 | EN2 | Enable input for VOUT2-driving high enables 1.2V output; floating or low disables it with auto-discharge. |
| 5 | VIN | Shared input supply (1.7V–5.25V)-feeds both LDO channels; requires ≥0.47µF ceramic decoupling adjacent to pin. |
| 6 | EN1 | Enable input for VOUT1-driving high enables 3.6V output; independent control allows staggered power-up sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1 and EN2 allow per-channel power gating-enables dynamic power management in multi-rail systems like camera ISPs. |
| Integrated auto-discharge | 50Ω NMOS discharge path per channel-ensures rapid VOUT ramp-down (<100µs) when disabled, preventing latch-up in downstream logic. |
| Low-noise, high-PSRR regulation | 60µVrms noise + 75dB PSRR at 1kHz-preserves signal integrity in RF transceivers and high-resolution imaging pipelines. |
| Wide input voltage range | 1.7V–5.25V operation-accepts direct Li-ion battery (3.0–4.2V), USB VBUS (4.75–5.25V), or buck converter outputs. |
| High-accuracy current limiting | 157mA ±25mA foldback limit-delivers consistent fault protection across temperature without external sensing components. |
Applications
| Smartphone Camera Module | Fingerprint Sensor Power |
|---|---|
|
Use Scenario: Dual-rail power for CMOS image sensor (3.6V analog, 1.2V digital core) and ISP processing unit. IC Role / Device Role / Timing Role: Dual LDO provides isolated, low-noise, sequenced supplies-VOUT1 powers analog pixel array, VOUT2 powers digital interface and memory controller. Use Value: 60µVrms noise prevents fixed-pattern noise in raw image data; independent EN control enables fast wake/sleep transitions during burst capture. |
Use Scenario: Low-quiescent power delivery to capacitive fingerprint sensor IC with strict standby current budget. IC Role / Device Role / Timing Role: VOUT2 (1.2V) supplies sensor logic; EN2 enables rapid shutdown between biometric scans to minimize average current draw. Use Value: 35µA quiescent current per active channel extends battery life in always-on authentication mode; auto-discharge prevents residual charge leakage. |
| RF Front-End Biasing | Portable Media Player Audio Codec |
|
Use Scenario: Clean bias voltage for RF power amplifier (PA) driver stage and low-noise amplifier (LNA) in Bluetooth/Wi-Fi combo modules. IC Role / Device Role / Timing Role: VOUT1 (3.6V) powers PA bias rail; high PSRR rejects switching noise from shared PMIC, preserving EVM and ACLR. Use Value: 75dB PSRR at 1kHz suppresses DC-DC ripple from system power rail-reducing spectral regrowth and improving receiver sensitivity. |
Use Scenario: Dual-supply for stereo audio codec requiring 3.6V AVDD and 1.2V DVDD in compact portable media players. IC Role / Device Role / Timing Role: VOUT1 delivers clean analog supply; VOUT2 powers digital logic-both regulated independently to avoid cross-talk. Use Value: ±1% output accuracy ensures consistent DAC/ADC reference stability; low 0.22V dropout at 3.6V maintains headroom during battery sag. |
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-3612FS6-7 | Successor device with identical pinout, same 3.6V/1.2V outputs, improved current limit accuracy (±15mA vs ±25mA), and lower 25µA quiescent current. | Same footprint and function-direct replacement where enhanced accuracy and lower IQ are required. | Select AP7345D for new designs; AP7346D remains viable for legacy BOM continuity or cost-sensitive production. |
| Torex XC6216D3612MR-G | 3.6V/1.2V dual LDO in SOT-26; higher 60µA IQ, no auto-discharge, 65dB PSRR at 1kHz, ±2% VOUT accuracy. | Larger package (2.8mm × 2.9mm) and no discharge path-unsuitable for fast power cycling or ultra-dense layouts. | Consider only if X2-DFN1212-6 footprint is unavailable and discharge functionality is not required. |
Compared with AP7345D-3612FS6-7, this part offers slightly relaxed current-limit tolerance and higher quiescent current but maintains identical pinout and thermal performance-making it suitable for cost-optimized legacy designs. Versus XC6216D3612MR-G, AP7346D delivers superior noise, PSRR, and package density at the expense of minor IQ penalty.
Availability
AP7346D-3612FS6-7 is available at Aetrix Electronics and suitable for smartphone camera modules, fingerprint sensor subsystems, and RF front-end biasing requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP7346D-3612FS6-7 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-performance power management, signal integrity, and connectivity solutions for consumer, industrial, and automotive markets.
The AP7346 belongs to Diodes' high-accuracy dual-LDO product line, engineered specifically for multi-rail portable electronics where board space, noise, and power sequencing are critical constraints.
FAQ
What is the thermal pad connection requirement for AP7346D-3612FS6-7?
The exposed thermal pad on the X2-DFN1212-6 package must be connected to a large PCB copper area for heat dissipation. It may be tied to GND or left floating-but cannot serve as the sole GND electrode. Minimum recommended copper area is 25 mm², with multiple vias to inner ground planes.
Can AP7346D-3612FS6-7 operate with only one channel enabled?
Yes-EN1 and EN2 are fully independent. Enabling only VOUT1 (EN1 = high, EN2 = low) powers the 3.6V rail while disabling the 1.2V output and reducing total quiescent current to ~35µA. The disabled channel enters ultra-low-IQ shutdown (≤1.0µA).
Is AP7346D-3612FS6-7 qualified for automotive use?
No-AP7346D-3612FS6-7 is not AEC-Q100 qualified. Diodes offers automotive-grade alternatives (e.g., AP7345Q series) with PPAP capability, IATF 16949 manufacturing, and extended temperature screening. This part is rated for −40°C to +85°C industrial operation only.
What output capacitor value is required for stable operation?
A minimum 0.47µF ceramic capacitor is required per output (VOUT1 and VOUT2), placed within 2mm of respective pins. For applications with >50mA load transients, add a 4.7µF–10µF low-ESR bulk capacitor in parallel to maintain regulation during step loads.
AP7346D-3612FS6-7 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):
- 1.2V, 3.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 120mA, 0.29V @ 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-3612FS6-7 FAQ
1.How can I place an order for AP7346D-3612FS6-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7346D-3612FS6-7 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-3612FS6-7 reliable?
The price and inventory of AP7346D-3612FS6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7346D-3612FS6-7 is usually 5 days.
3.What payment methods are accepted for AP7346D-3612FS6-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7346D-3612FS6-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7346D-3612FS6-7?
AP7346D-3612FS6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7346D-3612FS6-7 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-3612FS6-7?
For technical support, including AP7346D-3612FS6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7346D-3612FS6-7 requirements.
6.How does Aetrix verify that AP7346D-3612FS6-7 is sourced from the original manufacturer or authorized distributors?
All AP7346D-3612FS6-7 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-3612FS6-7 meets industry standards.
7.What is the process for return or replacement of AP7346D-3612FS6-7?
All AP7346D-3612FS6-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7346D-3612FS6-7, 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-3612FS6-7 part is unused and in its original packaging.
Return procedure for AP7346D-3612FS6-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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