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Diodes Incorporated AP7345D-3333RH4-7
- Part No.:
- AP7345D-3333RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7345D-3333RH4-7.pdf
- Description:
- IC REG LIN 3.3V/3.3V 300MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,079
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Product details
Overview
AP7345D-3333RH4-7 from Diodes Incorporated is a dual-channel, 300mA low-dropout linear regulator in X2-DFN1612-8 package, delivering fixed 3.3V outputs on both channels with ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 50µA quiescent current per active channel-designed for RF supply and camera power rails in compact portable devices.
For engineers reviewing the AP7345D-3333RH4-7 datasheet, AP7345D-3333RH4-7 pinout, AP7345D-3333RH4-7 application, or AP7345D-3333RH4-7 equivalent, key selection considerations include dual independent enable control (EN1/EN2), thermal shutdown at +150°C with +20°C hysteresis, dropout voltage of 0.22V at 300mA for 3.3V output, and compatibility with 1µF ceramic input/output capacitors.
Technical Context
The AP7345D-3333RH4-7 integrates two independent CMOS-based LDO regulators sharing a common ground but with separate VIN, VOUT, and EN pins-enabling asynchronous power sequencing and independent channel shutdown. Each channel features internal voltage reference, error amplifier, current limit circuit, and auto-discharge MOSFET (D-version).
It operates across 1.7V–5.25V input range with guaranteed 300mA per channel output, supports load transients up to 300mA with <50mV deviation (VOUT=3.3V), and maintains stability with low-ESR ceramic capacitors as small as 1µF-optimized for space-constrained RF and imaging subsystems requiring ultra-low noise and high PSRR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V per channel; enables direct replacement of single-output 3.3V LDOs in dual-rail systems without external feedback resistors. |
| Output Accuracy | ±1% at +25°C; ensures reliable logic-level compliance for 3.3V I/O domains in smartphones and wireless adapters. |
| PSRR | 75dB at 1kHz; suppresses switching noise from PMICs or DC-DC converters feeding adjacent RF or analog circuits. |
| Output Noise | 60µVrms (10Hz–100kHz); meets stringent noise requirements for image sensor analog supply and RF bias rails. |
| Dropout Voltage | 0.22V typical at 300mA (3.3V output); allows operation from 3.52V input, supporting battery-powered designs down to single-cell Li-ion minimum voltage. |
| Quiescent Current | 50µA per active channel; extends battery life in always-on camera modules and standby RF receivers. |
| Enable Thresholds | EN high ≥1.3V, EN low ≤0.5V; compatible with 1.8V/3.3V GPIOs without level-shifting in modern SoC platforms. |
Pinout & Package
X2-DFN1612-8 package: 1.6mm × 1.2mm footprint, 0.4mm pitch, thermally enhanced exposed pad (non-functional GND connection recommended for heat dissipation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Common ground reference | Two dedicated GND pins minimize ground loop impedance; must connect to low-impedance PCB ground plane. |
| VOUT1 (Pin 2) | Channel 1 regulated output | Delivers stable 3.3V to primary load (e.g., baseband processor I/O); requires local 1µF ceramic capacitor. |
| VOUT2 (Pin 3) | Channel 2 regulated output | Delivers independent 3.3V to secondary load (e.g., RF transceiver core); decoupled separately from VOUT1. |
| EN2 (Pin 5) | Channel 2 enable control | Active-high logic input; pulling low disables VOUT2 and reduces quiescent current to 0.1µA (standby mode). |
| VIN2 (Pin 6) | Channel 2 input supply | Accepts 1.7V–5.25V input; may be tied to same source as VIN1 or powered independently for sequencing. |
| VIN1 (Pin 7) | Channel 1 input supply | Input for first regulator; requires 1µF ceramic capacitor placed adjacent to pin for transient stability. |
| EN1 (Pin 8) | Channel 1 enable control | Independent enable for VOUT1; allows staggered power-up of digital and RF subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs (EN1/EN2) | Enables precise power sequencing-e.g., powering camera sensor before ISP, or enabling RF chain only during transmission bursts. |
| Auto-discharge function (D-version) | Integrates 30Ω N-channel MOSFET between VOUT and GND when disabled, ensuring rapid output discharge (<1ms) for safe hot-swap or reset timing. |
| Thermal shutdown with hysteresis | Shuts down at +150°C and re-enables at +130°C, preventing thermal runaway during sustained 300mA loads in sealed enclosures. |
| Low-noise, high-PSRR architecture | Combines CMOS pass device with optimized error amplifier bandwidth to reject >99.9% of 1kHz ripple-critical for RF front-end sensitivity. |
| Ultra-small X2-DFN1612-8 package | Reduces PCB area by >60% vs. SOT-23-8; supports 0.4mm trace routing in <1.0mm board thickness mobile designs. |
Applications
| Smartphone Camera Module | RF Transceiver Power |
|---|---|
|
Use Scenario: Dual-rail power for CMOS image sensor (analog AVDD) and ISP core (digital DVDD), both requiring clean 3.3V. IC Role / Device Role / Timing Role: Dual LDO providing isolated, low-noise 3.3V supplies with independent enable for sensor initialization sequence. Use Value: 60µVrms noise prevents fixed-pattern noise in raw image data; independent EN control synchronizes power with MIPI CSI-2 link startup. |
Use Scenario: Biasing PA driver stage and LNA in 2.4GHz Wi-Fi/BT combo module. IC Role / Device Role / Timing Role: Low-PSRR LDO rejecting noise from shared PMIC switchers while maintaining tight 3.3V regulation under RF burst loading. Use Value: 75dB PSRR at 1kHz suppresses DC-DC switching artifacts that degrade EVM and ACLR performance in transmit mode. |
| Portable Media Player Audio Codec | Wireless Adapter Baseband |
|
Use Scenario: Powering stereo DAC and headphone amplifier requiring matched 3.3V rails with minimal crosstalk. IC Role / Device Role / Timing Role: Dual LDO delivering tightly regulated, low-noise 3.3V to analog audio blocks with simultaneous enable for pop-free startup. Use Value: ±1% output accuracy ensures consistent full-scale DAC output; 50µA quiescent current extends playback time in battery-operated players. |
Use Scenario: Supplying 3.3V to baseband processor and SDIO interface in mini PCIe wireless adapter. IC Role / Device Role / Timing Role: Dual LDO supporting independent power domains-baseband core (always-on) and SDIO PHY (on-demand). Use Value: Independent EN1/EN2 allows SDIO rail shutdown during host sleep, reducing system-wide leakage by >10µA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6216D333MR-G | Single-channel 300mA LDO; no dual output or independent enable; 45dB PSRR at 1kHz; 30µVrms noise. | Requires two separate ICs to replicate dual-rail functionality; lacks sequencing control. | Select when board space permits discrete LDOs and sequencing is handled externally via MCU GPIOs. |
| Richtek RT9013-33GB | Single-channel 300mA LDO; fixed 3.3V; 65dB PSRR at 1kHz; 40µVrms noise; no enable pin. | No enable control or thermal protection; not suitable for dynamic power management. | Choose only for cost-sensitive, static-power applications where always-on 3.3V is acceptable and thermal margin is ample. |
Compared with XC6216D333MR-G and RT9013-33GB, the AP7345D-3333RH4-7 uniquely delivers dual 3.3V outputs with independent enable, 75dB PSRR, and thermal hysteresis-making it the only single-package solution for space-constrained, sequenced dual-rail designs in portable RF systems.
Availability
AP7345D-3333RH4-7 is available at Aetrix Electronics and suitable for smartphone camera modules, RF transceiver power, portable media player audio codecs, and wireless adapter baseband applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP7345D-3333RH4-7 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 protection solutions for consumer, industrial, and communications markets.
The AP7345D belongs to Diodes' high-PSRR, low-noise LDO family designed specifically for noise-sensitive portable electronics-emphasizing ultra-small footprint, dual-channel integration, and robust transient response in battery-powered RF and imaging systems.
FAQ
What is the maximum allowable input voltage for AP7345D-3333RH4-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating the specified line regulation and may trigger thermal shutdown under load. For 3.3V output, minimum input is 3.52V (accounting for 0.22V typical dropout), making it compatible with single-cell Li-ion (3.0–4.2V) with sufficient headroom.
Does AP7345D-3333RH4-7 require external capacitors, and what values are recommended?
Yes-each channel requires a minimum 1.0µF ceramic capacitor on both input (CIN) and output (COUT), placed as close as possible to their respective VIN/VOUT pins. The device is stable with low-ESR ceramics; bulk capacitance is optional but recommended for large load transients. No series resistance or specific ESR range is mandated, unlike older LDO architectures.
How does the auto-discharge feature operate, and when is it active?
The D-version includes integrated 30Ω N-channel MOSFETs between each VOUT and GND. When either EN pin is driven low (shutdown), the corresponding VOUT discharges rapidly through its internal FET-reducing output voltage to <100mV within 1ms. This prevents floating rails during hot-plug events or system resets, eliminating need for external bleed resistors.
Can AP7345D-3333RH4-7 be used in automotive applications?
No-the device is rated for –40°C to +85°C ambient operation and is not AEC-Q200 qualified. Its thermal shutdown threshold (+150°C) and package construction meet industrial portable standards but lack automotive-grade reliability testing, extended temperature validation, or PPAP documentation required for vehicle ECUs or infotainment systems.
AP7345D-3333RH4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.25V
- Voltage - Output (Min/Fixed):
- 3.3V, 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):
- 70 µA
- PSRR:
- 75dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1612-8
AP7345D-3333RH4-7 FAQ
1.How can I place an order for AP7345D-3333RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7345D-3333RH4-7 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 AP7345D-3333RH4-7 reliable?
The price and inventory of AP7345D-3333RH4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7345D-3333RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7345D-3333RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7345D-3333RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7345D-3333RH4-7?
AP7345D-3333RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7345D-3333RH4-7 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 AP7345D-3333RH4-7?
For technical support, including AP7345D-3333RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7345D-3333RH4-7 requirements.
6.How does Aetrix verify that AP7345D-3333RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7345D-3333RH4-7 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 AP7345D-3333RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7345D-3333RH4-7?
All AP7345D-3333RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7345D-3333RH4-7, 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 AP7345D-3333RH4-7 part is unused and in its original packaging.
Return procedure for AP7345D-3333RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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