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Diodes Incorporated AP7344D-3330RH4-7
- Part No.:
- AP7344D-3330RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7344D-3330RH4-7.pdf
- Description:
- IC REG LIN 3V/3.3V X2DFN1612-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,985
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Product details
Overview
AP7344D-3330RH4-7 from Diodes Incorporated is a dual-channel, 300mA low-dropout linear regulator with independent enable control, fixed 3.3V and 3.0V outputs, ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It operates from 1.7V to 5.25V input and targets RF supply rails and camera sensor power in space-constrained portable electronics.
For engineers reviewing the AP7344D-3330RH4-7 datasheet, AP7344D-3330RH4-7 pinout, AP7344D-3330RH4-7 application, or AP7344D-3330RH4-7 equivalent, key selection criteria include dual-output sequencing capability, thermal performance in X2-DFN1612-8, low-quiescent-current operation (50µA per channel active), and built-in discharge functionality for fast VOUT decay.
Technical Context
The AP7344D-3330RH4-7 integrates two independent CMOS-based LDO regulators sharing a common ground but with separate VIN, EN, and VOUT pins. Each channel features an error amplifier, precision voltage reference, current-limit circuit, and auto-discharge NMOS (50Ω typical) activated when EN is low.
It supports simultaneous or staggered enable control: EN1 controls Channel 1 (3.3V), EN2 controls Channel 2 (3.0V); both channels can be disabled independently to achieve <1.0µA standby current. Dropout voltage is 0.22V at 300mA for the 3.3V channel and 0.25V for the 3.0V channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Channel 1: 3.3V ±1%; Channel 2: 3.0V ±1% - ensures stable biasing for 3.3V I/O and 3.0V analog subsystems without external feedback. |
| Max Output Current | 300mA per channel - sufficient to power multiple RF transceivers or image sensor blocks without thermal derating in compact layouts. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding the same battery rail. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves SNR in camera ISP and audio codec power domains. |
| Quiescent Current | 50µA per active channel - extends battery life in always-on sensor nodes and standby modes. |
| Dropout Voltage | 0.22V (3.3V ch, 300mA), 0.25V (3.0V ch, 300mA) - enables operation down to 3.53V input while maintaining regulation on both rails. |
| Enable Threshold | EN high ≥1.3V, EN low ≤0.5V - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP7344D-3330RH4-7 uses the X2-DFN1612-8 package (1.6mm × 1.2mm × 0.39mm), featuring an exposed thermal pad optimized for PCB copper area connection to GND for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Common ground reference | Low-impedance return path for both regulators; pins must be connected to solid ground plane for stability and noise immunity. |
| VOUT1 (Pin 2) | Channel 1 regulated output | Delivers fixed 3.3V to primary digital subsystems; requires local 1.0µF ceramic capacitor placed adjacent to pin. |
| VOUT2 (Pin 3) | Channel 2 regulated output | Delivers fixed 3.0V to secondary analog/RF circuits; decoupling capacitor placement critical for PSRR performance. |
| EN2 (Pin 5) | Channel 2 enable input | Active-high logic control; floating prohibited-tie to VIN2 or GND to ensure defined state during power-up. |
| VIN2 (Pin 6) | Channel 2 input supply | Accepts 1.7V–5.25V; requires 0.47µF minimum ceramic input capacitor near pin to suppress supply transients. |
| VIN1 (Pin 7) | Channel 1 input supply | Independent input rail allows separate battery or DC/DC sourcing for noise isolation between domains. |
| EN1 (Pin 8) | Channel 1 enable input | Enables/disables 3.3V rail independently; supports power sequencing where 3.3V must ramp before 3.0V. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Two fully isolated regulation paths with separate EN, VIN, and VOUT-enables flexible power domain partitioning and sequencing. |
| Built-in discharge function | 50Ω NMOS discharge path per channel activates when EN is low, ensuring rapid VOUT decay (<100µs) to prevent latch-up in downstream logic. |
| Ultra-low noise & high PSRR | 60µVrms noise + 75dB PSRR at 1kHz-meets stringent requirements for RF front-end and high-resolution imaging sensors. |
| Wide input voltage range | 1.7V to 5.25V operation-supports single-cell Li-ion (2.7–4.2V), USB-powered (5V), and multi-cell alkaline inputs without external pre-regulation. |
| Thermal efficiency in ultra-small package | X2-DFN1612-8 footprint (1.92mm²) with exposed thermal pad-delivers 300mA/channel with <40°C/W θJA in standard 2-layer PCB layout. |
Applications
| Smartphone Camera Module | Wi-Fi/Bluetooth RF Power |
|---|---|
|
Use Scenario: Dual-rail power for CMOS image sensor (3.3V I/O, 3.0V analog core) with strict noise and sequencing requirements. IC Role / Device Role / Timing Role: Provides clean, sequenced 3.3V and 3.0V supplies; EN1/EN2 enable controlled power-up to avoid sensor initialization faults. Use Value: 60µVrms noise prevents fixed-pattern noise in raw image data; independent enable avoids voltage back-feeding during hot-plug events. |
Use Scenario: Dedicated LDO pair for Wi-Fi transceiver VDDIO (3.3V) and VDDA (3.0V) in portable hotspot devices. IC Role / Device Role / Timing Role: Delivers low-noise, high-PSRR bias under dynamic load (TX burst mode); discharge function clears residual charge before sleep entry. Use Value: 75dB PSRR rejects noise from shared PMIC switching node; 50µA quiescent current minimizes standby drain in battery-operated units. |
| Portable Media Player Audio Codec | Industrial Handheld Scanner |
|
Use Scenario: Powering stereo audio DAC/ADC requiring isolated analog (3.0V) and digital (3.3V) supplies with minimal crosstalk. IC Role / Device Role / Timing Role: Dual LDO eliminates need for discrete filtering components; thermal pad ensures stable operation during extended playback. Use Value: ±1% output accuracy maintains consistent full-scale voltage references; low dropout enables use with aging batteries down to 3.5V. |
Use Scenario: Compact barcode scanner with integrated imager and Bluetooth LE, operating from single 3.7V Li-ion cell. IC Role / Device Role / Timing Role: Supplies 3.3V to MCU and display, 3.0V to laser driver and photodiode amplifier-both rails enabled only during scan cycle. Use Value: Independent EN control reduces average system current by >95% in idle state; X2-DFN1612-8 saves >60% board area vs. SOIC-8 alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7345D-3330RH4-7 | Successor device with improved PSRR (80dB @1kHz), lower dropout (0.18V @300mA), and AEC-Q200 qualification option. | Preferred for new designs targeting automotive infotainment displays or industrial equipment requiring extended temperature validation. | Select AP7345D if long-term supply assurance, higher reliability certification, or tighter regulation under light loads is required. |
| TPL7407LDR | Single 7-channel 150mA LDO array; no dual fixed-voltage option; 65dB PSRR; no discharge function. | Suitable only when consolidating multiple low-current rails-not a functional replacement for dual 300mA outputs. | Consider only for cost-sensitive, non-critical applications where 300mA/channel and discharge are not required. |
Compared with AP7344D-3330RH4-7, the AP7345D offers measurable PSRR and thermal improvements for next-gen designs, while the TPL7407LDR trades output capability and feature set for integration density-making it unsuitable as a drop-in substitute.
Availability
AP7344D-3330RH4-7 is available at Aetrix Electronics and suitable for smartphone camera modules, Wi-Fi/Bluetooth RF power, portable media player audio codecs, and industrial handheld scanners requiring stable component supply across production lifecycles.
Supply support for AP7344D-3330RH4-7 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 solutions, with design centers across Asia, Europe, and the US, and manufacturing in IATF 16949-certified facilities.
The AP7344 series belongs to Diodes' high-performance LDO portfolio, engineered specifically for noise-sensitive portable electronics requiring dual-rail, low-quiescent-current regulation in sub-2mm² packages.
FAQ
What is the thermal pad connection requirement for AP7344D-3330RH4-7?
The exposed thermal pad must be connected to a large copper area on the PCB, preferably tied to GND for optimal heat dissipation and EMI suppression. Do not use the pad solely as the GND electrical connection-supplement with dedicated GND pins (1 and 4) to maintain low-impedance return paths for both channels.
Can AP7344D-3330RH4-7 operate with only one channel enabled?
Yes-EN1 and EN2 are fully independent. Enabling only Channel 1 (3.3V) while holding EN2 low disables Channel 2 (3.0V) and reduces total quiescent current to ~50µA. The disabled channel's VOUT2 remains discharged via its internal 50Ω NMOS, preventing back-powering of downstream circuits.
Is output capacitor selection critical for stability with AP7344D-3330RH4-7?
Yes-AP7344D-3330RH4-7 is optimized for 1.0µF ceramic capacitors (X5R/X7R) with ESR <10mΩ. Using larger values (>4.7µF) improves transient response but may require ESR adjustment; tantalum or aluminum electrolytics are not recommended due to ESR and aging effects that risk instability.
Why does Diodes recommend AP7345D over AP7344D for new designs?
AP7345D delivers measurable enhancements: 5dB higher PSRR, 0.04V lower dropout at 300mA, and optional AEC-Q200 qualification. These improvements directly address thermal margin and noise rejection challenges in denser, higher-performance portable systems-making AP7345D the forward-compatible choice for design-in.
AP7344D-3330RH4-7 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):
- 3V, 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.29V @ 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-3330RH4-7 FAQ
1.How can I place an order for AP7344D-3330RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7344D-3330RH4-7 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-3330RH4-7 reliable?
The price and inventory of AP7344D-3330RH4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7344D-3330RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7344D-3330RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7344D-3330RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7344D-3330RH4-7?
AP7344D-3330RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7344D-3330RH4-7 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-3330RH4-7?
For technical support, including AP7344D-3330RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7344D-3330RH4-7 requirements.
6.How does Aetrix verify that AP7344D-3330RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7344D-3330RH4-7 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-3330RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7344D-3330RH4-7?
All AP7344D-3330RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7344D-3330RH4-7, 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-3330RH4-7 part is unused and in its original packaging.
Return procedure for AP7344D-3330RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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