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Diodes Incorporated AP7344D-2833RH4-7
- Part No.:
- AP7344D-2833RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7344D-2833RH4-7.pdf
- Description:
- IC REG LIN 2.8V/3.3V X2DFN1612-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,661
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Product details
Overview
AP7344D-2833RH4-7 from Diodes Incorporated is a dual-channel, 300mA low-dropout linear regulator with independent enable control per channel, delivering fixed 2.8V and 3.3V outputs in an X2-DFN1612-8 package. It features ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 50µA quiescent current in single-channel active mode-optimized for RF supply rails and camera power domains in portable electronics.
For engineers reviewing the AP7344D-2833RH4-7 datasheet, AP7344D-2833RH4-7 pinout, AP7344D-2833RH4-7 application, or AP7344D-2833RH4-7 equivalent, key selection criteria include dual-rail sequencing capability, low-noise performance under 30mA load, thermal pad layout requirements, and compatibility with 1µF ceramic output capacitors for space-constrained mobile designs.
Technical Context
The AP7344D-2833RH4-7 integrates two independent CMOS-based LDO regulators sharing no internal biasing-each with dedicated error amplifier, voltage reference, current limit circuit, and enable input. Its architecture supports asynchronous channel enable/disable, enabling precise power sequencing for mixed-voltage SoC subsystems.
Each regulator operates across 1.7V–5.25V input range with dropout voltages as low as 220mV at 300mA (for VOUT > 3.0V) and includes built-in short-circuit protection clamping output current to ~55mA. The device implements auto-discharge functionality on both channels via integrated 50Ω N-channel FETs when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Channel 1: 2.8V fixed; Channel 2: 3.3V fixed-enables direct powering of 2.8V RF ICs and 3.3V interface logic without external feedback resistors. |
| Output Accuracy | ±1% at +25°C, ±1.5% over −40°C to +85°C-ensures stable core voltage for sensitive analog blocks like RF transceivers and image sensors. |
| PSRR | 75dB at 1kHz-suppresses switching noise from adjacent DC/DC converters feeding noisy system rails. |
| Output Noise | 60µVrms (10Hz–100kHz)-meets low-noise requirements for camera ISP analog front-ends and audio codec supplies. |
| Quiescent Current | 50µA (one channel active, no load)-extends battery life in always-on sensor nodes and standby modes. |
| Dropout Voltage | 220mV max at 300mA for 3.3V output-supports operation from single-cell Li-ion (3.0V min) with margin for voltage sag. |
| Enable Threshold | EN high = ≥1.3V; EN low = ≤0.5V-compatible with 1.8V/3.3V GPIOs without level-shifting. |
Pinout & Package
X2-DFN1612-8 package: 1.6mm × 1.2mm × 0.39mm body, 0.4mm pitch, exposed thermal pad (not electrically connected to GND by default).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Power ground reference | Two separate GND pins reduce ground loop impedance; thermal pad must be connected to PCB ground plane for thermal dissipation. |
| VOUT1 (Pin 2) | Channel 1 regulated output | Delivers 2.8V at up to 300mA; requires local 1µF ceramic capacitor placed adjacent to pin. |
| VOUT2 (Pin 3) | Channel 2 regulated output | Delivers 3.3V at up to 300mA; independent from VOUT1-allows staggered power-up sequences. |
| EN2 (Pin 5) | Channel 2 enable input | Active-high control; floating state prohibited-must be tied to VIN2 or GND to avoid undefined regulator state. |
| VIN2 (Pin 6) | Channel 2 input supply | Accepts 1.7V–5.25V; decoupled by 0.47µF ceramic capacitor placed within 2mm of pin. |
| VIN1 (Pin 7) | Channel 1 input supply | Independent input rail-supports split-input architectures (e.g., VBAT for RF, VBUS for I/O). |
| EN1 (Pin 8) | Channel 1 enable input | Active-high control; enables independent sequencing-e.g., power 2.8V RF rail before 3.3V digital interface. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables isolated power domains-e.g., 2.8V for RF PA bias and 3.3V for baseband MCU I/O, eliminating cross-talk. |
| Auto-discharge function | 50Ω internal FET per channel rapidly discharges VOUT to GND when disabled-prevents residual voltage from interfering with downstream reset timing. |
| Low-noise 60µVrms output | Meets stringent noise floor requirements for camera image signal processors and high-resolution ADC reference supplies. |
| 75dB PSRR at 1kHz | Rejects ripple from switching converters operating at common frequencies (e.g., 1MHz DC/DC with 1kHz harmonics). |
| Thermal pad design | Exposed pad improves θJA by >30°C/W vs. non-thermal packages-critical for sustained 300mA operation in sealed handheld enclosures. |
Applications
| Smartphone Camera Module | RF Front-End Power |
|---|---|
|
Use Scenario: Dual-rail power for CMOS image sensor (2.8V analog core) and ISP (3.3V digital I/O). IC Role / Device Role / Timing Role: Provides independently sequenced, low-noise supplies with fast transient response to handle burst-mode image capture. Use Value: Prevents image artifacts from supply coupling; 60µVrms noise ensures <1 LSB error in 12-bit ADC pipelines. |
Use Scenario: Clean bias for 2.8V power amplifier and 3.3V RF switch/LNA in LTE/Wi-Fi modules. IC Role / Device Role / Timing Role: Isolates RF analog supply from noisy digital domains using dual-channel PSRR and independent enable control. Use Value: 75dB PSRR suppresses baseband switching noise, improving EVM by >3dB in 2.4GHz transmission. |
| Portable Media Player Audio | Wireless Adapter Core Logic |
|
Use Scenario: Dedicated 2.8V supply for DAC/codec analog section and 3.3V for SDIO/Wi-Fi interface controller. IC Role / Device Role / Timing Role: Delivers ultra-low-noise analog rail while supporting hot-plug detection via EN-controlled sequencing. Use Value: 50µA quiescent current extends playback time; ±1% accuracy maintains consistent audio gain calibration. |
Use Scenario: Power management for dual-voltage Bluetooth/Wi-Fi combo chip requiring 2.8V radio and 3.3V host interface. IC Role / Device Role / Timing Role: Enables synchronized wake-up (EN1/EN2 tied) or staggered boot (independent EN control) for firmware loading. Use Value: Auto-discharge prevents bus contention during reset; 300mA per channel supports peak transmit current surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7345D-2833RH4-7 | Successor with improved PSRR (80dB @ 1kHz), lower dropout (200mV @ 300mA), and AEC-Q200 qualification option. | Supports automotive infotainment displays requiring extended temperature operation and PPAP documentation. | Select for new designs requiring higher reliability margin or automotive compliance; pin- and footprint-compatible replacement. |
| TPL7407LDR | Single-channel 300mA LDO with 3.3V output only; no 2.8V rail or dual-enable capability. | Limited to single-rail systems; lacks independent sequencing or RF-grade noise performance (120µVrms). | Use only if second rail is supplied externally or if board space allows two discrete LDOs instead of dual-channel integration. |
Compared with AP7344D-2833RH4-7, the AP7345D offers measurable PSRR and thermal performance gains for next-gen portable designs, while the TPL7407LDR sacrifices integration and noise performance for cost-sensitive single-rail applications-making the AP7344D optimal for compact dual-rail RF/camera subsystems where legacy compatibility is required.
Availability
AP7344D-2833RH4-7 is available at Aetrix Electronics and suitable for smartphone camera modules, RF front-end power distribution, portable media player audio subsystems, and wireless adapter core logic requiring stable component supply across industrial temperature ranges.
Supply support for AP7344D-2833RH4-7 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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with manufacturing certified to IATF 16949 and product definitions aligned to AEC-Q200 for automotive applications.
The AP7344 series belongs to Diodes' high-PSRR, low-noise LDO portfolio designed specifically for power integrity in battery-powered RF and imaging subsystems-emphasizing small-footprint packaging and dynamic load regulation.
FAQ
What is the recommended output capacitor value and type for AP7344D-2833RH4-7?
A 1.0µF X5R/X7R ceramic capacitor placed within 2mm of each VOUT pin is recommended for stability and transient response. The device is optimized for low-ESR ceramics; bulk tantalum or aluminum electrolytic caps may be added in parallel for large load steps, but the 1µF ceramic is mandatory for phase margin control.
Can AP7344D-2833RH4-7 operate with input voltage below 1.7V?
No. The absolute minimum input voltage is 1.7V per channel, as specified in Recommended Operating Conditions. Operation below this threshold risks dropout, output regulation loss, and potential instability-especially under 300mA load where dropout voltage exceeds 220mV for the 3.3V rail.
How does the auto-discharge function behave during shutdown?
When either EN1 or EN2 is pulled low, the corresponding channel's internal 50Ω N-channel FET connects VOUT to GND, discharging output capacitance in <1ms for typical 1µF loads. This prevents floating voltages that could cause latch-up in downstream logic or violate reset timing specifications.
Is thermal pad connection to GND mandatory for AP7344D-2833RH4-7?
While the thermal pad is not electrically functional as a GND terminal, Diodes recommends connecting it to the PCB ground plane via multiple vias to improve thermal resistance by >30%. Leaving it unconnected degrades θJA significantly, risking thermal shutdown above 200mA continuous load at +85°C ambient.
AP7344D-2833RH4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-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):
- 2.8V, 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 300mA, 0.29V @ 300mA
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 140 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-DFN1612-8
AP7344D-2833RH4-7 FAQ
1.How can I place an order for AP7344D-2833RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7344D-2833RH4-7 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 AP7344D-2833RH4-7 reliable?
The price and inventory of AP7344D-2833RH4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7344D-2833RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7344D-2833RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7344D-2833RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7344D-2833RH4-7?
AP7344D-2833RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7344D-2833RH4-7 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 AP7344D-2833RH4-7?
For technical support, including AP7344D-2833RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7344D-2833RH4-7 requirements.
6.How does Aetrix verify that AP7344D-2833RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7344D-2833RH4-7 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 AP7344D-2833RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7344D-2833RH4-7?
All AP7344D-2833RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7344D-2833RH4-7, 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 AP7344D-2833RH4-7 part is unused and in its original packaging.
Return procedure for AP7344D-2833RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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