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Diodes Incorporated AP7344D-285285RH4-7
- Part No.:
- AP7344D-285285RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7344D-285285RH4-7.pdf
- Description:
- IC REG LIN 2.85V/2.85V X2DFN1612
- Quantity:
- Payment:
- Shipping:
Inventory:4,129
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Product details
Overview
AP7344D-285285RH4-7 from Diodes Incorporated is a dual-channel, 300mA low-dropout linear regulator with fixed 2.85V outputs per channel, high PSRR (75dB at 1kHz), ultra-low output noise (60µVrms, 10Hz–100kHz), and ±1% output voltage accuracy over –40°C to +85°C. It features independent enable inputs (EN1/EN2), CMOS-based architecture, and operates from 1.7V to 5.25V input. It is used in RF supply rails for dual-band wireless modules where clean, tightly regulated dual voltages are required.
For engineers reviewing the AP7344D-285285RH4-7 datasheet, AP7344D-285285RH4-7 pinout, AP7344D-285285RH4-7 application, or AP7344D-285285RH4-7 equivalent, key selection criteria include dual-channel independent enable control, simultaneous low-noise 2.85V regulation, thermal performance in X2-DFN1612-8, and compatibility with ceramic output capacitors as small as 1.0µF.
Technical Context
The AP7344D-285285RH4-7 integrates two independent LDO regulators sharing a common ground but with separate VIN, VOUT, and EN pins-enabling asynchronous power sequencing and channel-specific shutdown. Each channel uses a CMOS pass device with integrated voltage reference and error amplifier, delivering 300mA guaranteed output current with dropout as low as 220mV at 300mA for VOUT = 2.85V.
It supports output discharge via internal 50Ω N-channel FETs when disabled (denoted by "D" suffix), reducing residual voltage on load capacitance. Its 75dB PSRR at 1kHz and 60µVrms noise make it suitable for noise-sensitive analog/RF circuitry, while its 50µA quiescent current in single-channel active mode enables battery-powered operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85V per channel - eliminates external feedback resistors and ensures stable, matched dual-rail generation. |
| Output Current | 300mA per channel - sufficient to power RF transceivers, camera ISPs, or dual-core microcontroller I/O domains. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC-DC converters feeding the LDO input. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves SNR in RF front-end biasing and high-resolution ADC reference supplies. |
| Quiescent Current | 50µA (one channel active, one disabled) - extends runtime in always-on sensor nodes or standby subsystems. |
| Dropout Voltage | 220mV at 300mA (VOUT = 2.85V) - enables operation from single-cell Li-ion (3.0V min) or 3.3V rail with margin. |
| Voltage Accuracy | ±1% at +25°C, ±1.5% over –40°C to +85°C - meets tight tolerance requirements for RF amplifier VCC and PLL core supplies. |
Pinout & Package
X2-DFN1612-8 package: 1.6mm × 1.2mm, 0.4mm pitch, thermally enhanced with exposed pad (not electrically connected to GND by default; recommended to tie to PCB ground plane for thermal dissipation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Common ground reference | Two dedicated GND pins minimize ground loop impedance; must be connected to low-impedance PCB ground plane. |
| VOUT1 (Pin 2) | Channel 1 regulated output | Delivers 2.85V to first load domain; requires local 1.0µF ceramic capacitor placed adjacent to pin. |
| VOUT2 (Pin 3) | Channel 2 regulated output | Delivers second 2.85V rail; independent of VOUT1-supports isolated power domains or redundancy. |
| EN2 (Pin 5) | Channel 2 enable input | Active-high logic; drives channel 2 into shutdown (<1µA ISTANDBY) when pulled low; must not float. |
| VIN2 (Pin 6) | Channel 2 input supply | Accepts 1.7V–5.25V; may be tied to same source as VIN1 or powered separately for sequencing control. |
| VIN1 (Pin 7) | Channel 1 input supply | Independent input allows different upstream sources (e.g., buck converter vs. battery) per channel. |
| EN1 (Pin 8) | Channel 1 enable input | Active-high logic; enables/disables channel 1 independently-critical for dynamic power gating in SoC subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1 and EN2 allow per-channel power-up/down sequencing-essential for meeting SoC boot timing and isolation requirements. |
| Integrated output discharge (D-suffix) | 50Ω internal FET per channel actively discharges VOUT to <0.1V within 100µs after disable-prevents floating bias in RF switches or analog sensors. |
| Ultra-low noise (60µVrms) | Enables direct powering of VCOs, LNA bias, and precision ADC references without additional filtering stages. |
| High PSRR (75dB @ 1kHz) | Maintains clean 2.85V rails even when supplied from noisy switcher outputs (e.g., PMIC buck converters). |
| ±1% output accuracy | Guarantees compliance with 2.85V ±28.5mV tolerance for RF ICs requiring strict VCC stability (e.g., Bluetooth 5.0 PHY, LTE Cat-M transceivers). |
Applications
| Smartphone Dual-Band RF Front-End | Industrial IoT Sensor Hub |
|---|---|
|
Use Scenario: Powering separate 2.85V rails for LTE and GNSS RF transceivers in compact smartphone modules. IC Role / Device Role / Timing Role: Dual LDO providing isolated, low-noise, sequenced VCC for concurrent multi-radio operation. Use Value: Prevents cross-talk between RF bands via PSRR >75dB and eliminates startup glitches using independent EN control. |
Use Scenario: Supplying 2.85V to a dual-sensor node (e.g., MEMS accelerometer + environmental sensor) with wake-on-event capability. IC Role / Device Role / Timing Role: Low-quiescent-current dual regulator enabling independent sensor power gating during sleep cycles. Use Value: Reduces system standby current to <1µA per channel via EN-driven shutdown, extending 10-year battery life. |
| Wireless Camera Module | Portable Medical Pulse Oximeter |
|
Use Scenario: Delivering matched 2.85V supplies to image signal processor (ISP) core and MIPI interface in HD camera modules. IC Role / Device Role / Timing Role: Dual-output LDO ensuring synchronized, ripple-free power for high-speed digital video interfaces. Use Value: 60µVrms noise prevents visible banding in low-light video; ±1% accuracy maintains ISP clock stability. |
Use Scenario: Providing clean 2.85V bias to red/IR LED drivers and analog front-end (AFE) in battery-powered pulse oximeters. IC Role / Device Role / Timing Role: Dual LDO with discharge function eliminating LED afterglow and AFE offset drift during measurement transitions. Use Value: Output discharge reduces post-shutdown settling time to <200µs-critical for rapid measurement cycle repetition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7345D-285285RH4-7 | Successor with improved thermal resistance (θJA = 220°C/W vs. 260°C/W), lower dropout (200mV @ 300mA), and AEC-Q200 qualification option. | Preferred for new automotive or industrial designs requiring extended temperature validation and higher reliability. | Select AP7345D if new design allows migration; AP7344D remains valid for legacy cost-sensitive consumer designs. |
| TPL7407LDR | Single-channel 300mA LDO (2.85V), no dual output or independent enables; PSRR = 65dB, noise = 90µVrms. | Requires two devices for dual-rail use-increases board area, BOM count, and layout complexity. | Only consider if dual-channel integration is unnecessary and footprint constraints permit discrete placement. |
Compared with AP7344D-285285RH4-7, the AP7345D offers superior thermal and electrical specs for next-gen designs, while the TPL7407LDR lacks dual-channel integration-making it less efficient for space-constrained dual-rail systems.
Availability
AP7344D-285285RH4-7 is available at Aetrix Electronics and suitable for RF transceiver power supplies, portable medical sensor nodes, and dual-core embedded vision systems requiring stable component supply across production lifecycles.
Supply support for AP7344D-285285RH4-7 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 protection solutions for high-volume electronics markets.
The AP7344 series belongs to Diodes' high-PSRR, low-noise LDO portfolio designed specifically for noise-sensitive portable and wireless applications-including smartphones, tablets, and IoT edge devices.
FAQ
What is the thermal pad connection requirement for AP7344D-285285RH4-7?
The exposed thermal pad on the X2-DFN1612-8 package must be connected to a large copper area on the PCB, preferably tied to the GND net for optimal heat dissipation. It is not an electrical GND terminal by default but should be soldered to a thermal land with ≥4 vias to inner ground planes. Leaving it unconnected degrades θJA by >40°C/W.
Can AP7344D-285285RH4-7 operate with only one channel enabled?
Yes-EN1 and EN2 are fully independent. Enabling only one channel (e.g., EN1 = high, EN2 = low) results in 50µA typical quiescent current and zero output current from the disabled channel. The disabled channel's VOUT2 remains at 0V due to the integrated discharge FET, preventing backfeed or floating conditions.
What minimum output capacitance is required for stability?
A minimum 1.0µF X5R/X7R ceramic capacitor is required per VOUT pin, placed within 2mm of the pin and its adjacent GND pin. Lower ESR (<10mΩ) improves transient response; bulk capacitance (e.g., 4.7µF) is recommended for loads with >100mA step changes to limit voltage droop to <2%.
Is AP7344D-285285RH4-7 qualified for automotive use?
No-AP7344D-285285RH4-7 is not AEC-Q200 qualified. Diodes offers the pin-compatible AP7345D-285285RH4-7 with optional AEC-Q200 qualification and IATF 16949 manufacturing. For automotive applications, contact Diodes directly to evaluate PPAP-capable variants and change-controlled release processes.
AP7344D-285285RH4-7 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):
- 2.85V, 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 300mA, 0.3V @ 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-285285RH4-7 FAQ
1.How can I place an order for AP7344D-285285RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7344D-285285RH4-7 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-285285RH4-7 reliable?
The price and inventory of AP7344D-285285RH4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7344D-285285RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7344D-285285RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7344D-285285RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7344D-285285RH4-7?
AP7344D-285285RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7344D-285285RH4-7 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-285285RH4-7?
For technical support, including AP7344D-285285RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7344D-285285RH4-7 requirements.
6.How does Aetrix verify that AP7344D-285285RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7344D-285285RH4-7 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-285285RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7344D-285285RH4-7?
All AP7344D-285285RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7344D-285285RH4-7, 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-285285RH4-7 part is unused and in its original packaging.
Return procedure for AP7344D-285285RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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