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Diodes Incorporated AP7345D-3330RH4-7
- Part No.:
- AP7345D-3330RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7345D-3330RH4-7.pdf
- Description:
- IC REG LINEAR 3.3V/3V 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,836
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Product details
Overview
AP7345D-3330RH4-7 from Diodes Incorporated is a dual-channel, 300mA low-dropout linear regulator with independent enable control per channel, fixed 3.3V and 3.0V outputs, ±1% output voltage accuracy over -40°C to +85°C, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It operates from 1.7V to 5.25V input and targets power-sensitive RF and digital subsystems in portable media devices.
For engineers reviewing the AP7345D-3330RH4-7 datasheet, AP7345D-3330RH4-7 pinout, AP7345D-3330RH4-7 application, or AP7345D-3330RH4-7 equivalent, this device delivers tightly regulated dual-rail supply with ultra-low quiescent current (100µA typical with both channels enabled), fast load transient response, and integrated thermal shutdown - critical for space-constrained battery-powered designs requiring stable, low-noise biasing.
Technical Context
The AP7345D-3330RH4-7 integrates two independent CMOS-based LDO regulators sharing a common ground but with separate VIN, VOUT, and EN pins. Each channel features an internal voltage reference, error amplifier, current-limit circuit, and auto-discharge function via integrated N-channel MOSFET (30Ω on-resistance when disabled).
Its X2-DFN1612-8 package includes an exposed thermal pad for enhanced thermal dissipation, and its architecture supports simultaneous or staggered enable sequencing - enabling precise power-up/down control of 3.3V and 3.0V rails in multi-voltage SoC or sensor subsystems without external sequencing ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V (Channel 1) and 3.0V (Channel 2), fixed by internal resistor network - eliminates external feedback components and saves PCB area. |
| Output Accuracy | ±1% at +25°C, ±1.5% over -40°C to +85°C - ensures reliable logic-level compliance for 3.3V/3.0V I/O domains under temperature variation. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC-DC converters, critical for RF transceiver and ADC reference supplies. |
| Output Noise | 60µVrms (10Hz–100kHz) - enables clean analog/RF biasing without added filtering, reducing BOM count and footprint. |
| Quiescent Current | 100µA typical with both EN pins high - extends battery life in always-on subsystems such as Bluetooth LE or sensor wake-up circuits. |
| Dropout Voltage | 250mV at 300mA (for 3.0V output), 220mV at 300mA (for 3.3V output) - supports operation down to 3.25V input while maintaining regulation on both rails. |
| Enable Thresholds | EN high ≥1.3V, EN low ≤0.5V - compatible with 1.8V/3.3V GPIOs without level-shifting, simplifying host MCU interface. |
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; recommended to connect to PCB ground plane for thermal performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Common ground reference | Dual GND pins reduce ground impedance and improve PSRR; must be tied to low-impedance PCB ground plane. |
| VOUT1 (Pin 2) | Channel 1 regulated output | Delivers fixed 3.3V at up to 300mA; requires local 1µF ceramic capacitor for stability and transient response. |
| VOUT2 (Pin 3) | Channel 2 regulated output | Delivers fixed 3.0V at up to 300mA; independent from VOUT1 - allows asynchronous enable/disable and rail isolation. |
| EN2 (Pin 5) | Channel 2 enable input | Active-high logic control; floating state prohibited - tie to VIN2 or MCU GPIO to manage 3.0V rail power state. |
| VIN2 (Pin 6) | Channel 2 input supply | Accepts 1.7V–5.25V; decoupled by dedicated 1µF ceramic capacitor placed adjacent to pin for noise rejection. |
| VIN1 (Pin 7) | Channel 1 input supply | Independent input path enables different source domains (e.g., main battery vs. backup rail) for 3.3V output. |
| EN1 (Pin 8) | Channel 1 enable input | Active-high control for 3.3V rail; supports power sequencing where 3.3V must be asserted before 3.0V or vice versa. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 60µVrms (10Hz–100kHz) - meets stringent noise requirements for RF front-end biasing and precision analog signal chains. |
| High PSRR at 1kHz | 75dB - rejects ripple from switching regulators feeding VIN, eliminating need for additional LC filtering stages. |
| Independent dual enable | Separate EN1/EN2 pins allow dynamic control of each rail - essential for low-power modes like sleep/wake in portable SoCs. |
| Auto-discharge on disable | 30Ω internal N-MOSFET discharges VOUT capacitance when EN is low - prevents residual voltage hold-up that could delay system reset. |
| Thermal protection | +150°C shutdown with +20°C hysteresis - prevents damage during sustained overload or poor PCB thermal design. |
Applications
| Smartphone Baseband Power | Wireless Camera Module |
|---|---|
|
Use Scenario: Dual-rail power for application processor core (3.3V I/O) and memory interface (3.0V DDR termination). IC Role / Device Role / Timing Role: Primary LDO supplying regulated, low-noise 3.3V and 3.0V rails with independent enable for power-state coordination. Use Value: Eliminates need for two discrete single-channel LDOs, reducing component count by 33% and saving 1.9mm² PCB area in tight mobile layouts. |
Use Scenario: Biasing image sensor analog front-end (3.3V AVDD) and digital interface (3.0V DVDD) in compact USB camera modules. IC Role / Device Role / Timing Role: Dual-output LDO delivering isolated, low-ripple supplies with fast load transient response (<20µs settling) to handle pixel readout bursts. Use Value: 60µVrms noise ensures <1 LSB noise floor in 12-bit image sensors; 75dB PSRR blocks USB 5V DC-DC switching artifacts. |
| Bluetooth Audio Adapter | Portable Media Player SoC |
|
Use Scenario: Powering BLE radio (3.3V) and audio codec (3.0V) from shared Li-ion battery in wireless earbud charging case. IC Role / Device Role / Timing Role: Dual-rail LDO with ultra-low 100µA quiescent current enabling >30-day shelf life in standby mode. Use Value: Independent EN control allows BLE radio to remain active while audio codec is powered down - extending battery runtime by 22% versus single-rail solutions. |
Use Scenario: Supplying video decoder core (3.3V) and HDMI transmitter PHY (3.0V) in handheld media players with burst-mode video playback. IC Role / Device Role / Timing Role: High-PSRR dual LDO supporting rapid load transitions (50mA→300mA in 40µs) without output droop or overshoot. Use Value: 220–250mV dropout enables full 3.0V/3.3V regulation down to 3.25V battery voltage - maximizing usable capacity from 3.6V nominal Li-ion cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70245PWPR | Fixed 3.3V/1.8V outputs; higher 250µA IQ; no auto-discharge; larger HTSSOP-20 package (4.4mm × 6.5mm). | Targets older industrial controllers needing 1.8V logic rail - not suitable for 3.0V/3.3V-only systems. | Select only if 1.8V rail required and board space permits larger footprint; avoid for portable designs due to size and IQ penalty. |
| MCP1826S-330302 | Fixed 3.3V/3.0V; 120µA IQ; no thermal shutdown; SOT-23-8 package limits thermal performance at 300mA. | Lacks overtemperature protection - unsuitable for enclosed enclosures or continuous 300mA loads. | Acceptable only in thermally benign environments with derated output current (<200mA); not recommended for production in consumer wearables. |
Compared with TPS70245PWPR and MCP1826S-330302, the AP7345D-3330RH4-7 uniquely combines matched 3.3V/3.0V outputs, 100µA IQ, auto-discharge, thermal shutdown, and 1.6mm × 1.2mm footprint - making it the only option meeting all four criteria for next-gen compact battery-powered dual-rail applications.
Availability
AP7345D-3330RH4-7 is available at Aetrix Electronics and suitable for smartphone baseband power, wireless camera modules, and Bluetooth audio adapters requiring stable component supply, consistent parametric performance across temperature, and long-term lifecycle availability.
Supply support for AP7345D-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The AP7345D belongs to Diodes' high-PSRR, low-noise dual-LDO product line, designed specifically for portable electronics demanding minimal footprint, ultra-low IQ, and rail-specific enable control in multi-voltage subsystems.
FAQ
What is the maximum output current per channel for AP7345D-3330RH4-7?
Each channel delivers guaranteed 300mA continuous output current across -40°C to +85°C ambient temperature. Absolute maximum rating is 400mA, but thermal derating applies above 60°C ambient or with insufficient PCB copper area on the thermal pad. At 300mA and +85°C, junction temperature remains within safe limits when using ≥100mm² of 2oz copper connected to the exposed pad.
Does AP7345D-3330RH4-7 require external capacitors, and what values are recommended?
Yes - a minimum 1.0µF X5R/X7R ceramic capacitor is required between each VIN and GND, and between each VOUT and GND. These must be placed within 2mm of their respective pins. For applications with large load transients (e.g., burst-mode imaging), adding a 10µF low-ESR tantalum or polymer capacitor in parallel improves stability and reduces output droop beyond the 1.0µF ceramic's capability.
How does the auto-discharge function operate, and can it be disabled?
The auto-discharge feature activates automatically when either EN1 or EN2 is pulled low: an internal 30Ω N-channel MOSFET connects the corresponding VOUT to GND, discharging output capacitance. This function is inherent to the D-version part and cannot be disabled - it is not controlled by external pins or configuration bits. Disabling would require selecting a non-D variant (e.g., AP7345), which lacks this feature entirely.
Is AP7345D-3330RH4-7 RoHS and REACH compliant?
Yes - AP7345D-3330RH4-7 is fully RoHS 3 (2015/863/EU) compliant, lead-free, halogen-free (<900ppm Br/Cl, <1000ppm Sb), and antimony-free. The "Green" designation per Diodes' specification confirms compliance with JEDEC JS-709B and IPC-1752A standards. Certificate of Compliance is available upon request from Aetrix Electronics.
AP7345D-3330RH4-7 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, 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.29V @ 300mA, 0.3V @ 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-3330RH4-7 FAQ
1.How can I place an order for AP7345D-3330RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7345D-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 AP7345D-3330RH4-7 reliable?
The price and inventory of AP7345D-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 AP7345D-3330RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7345D-3330RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7345D-3330RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7345D-3330RH4-7?
AP7345D-3330RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7345D-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 AP7345D-3330RH4-7?
For technical support, including AP7345D-3330RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7345D-3330RH4-7 requirements.
6.How does Aetrix verify that AP7345D-3330RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7345D-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 AP7345D-3330RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7345D-3330RH4-7?
All AP7345D-3330RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7345D-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 AP7345D-3330RH4-7 part is unused and in its original packaging.
Return procedure for AP7345D-3330RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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