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Diodes Incorporated AP7344-3028RH4-7
- Part No.:
- AP7344-3028RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7344-3028RH4-7.pdf
- Description:
- IC REG LIN 2.8V/3V X2DFN1612-8
- Quantity:
- Payment:
- Shipping:
Inventory:3,606
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Product details
Overview
AP7344-3028RH4-7 from Diodes Incorporated is a dual-channel CMOS low-dropout regulator delivering fixed 3.0V and 2.8V outputs, each rated for 300mA continuous current, ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It operates from 1.7V to 5.25V input and features independent enable inputs (EN1/EN2) for power sequencing in compact portable electronics.
For engineers reviewing the AP7344-3028RH4-7 datasheet, AP7344-3028RH4-7 pinout, AP7344-3028RH4-7 application, or AP7344-3028RH4-7 equivalent, key selection criteria include dual-rail low-noise biasing for RF and camera modules, thermal performance in X2-DFN1612-8, and enable-controlled shutdown for battery-sensitive systems.
Technical Context
The AP7344 integrates two independent LDO channels on a single CMOS die, each with dedicated error amplifier, voltage reference, current-limit circuit, and enable control-enabling precise, isolated regulation without cross-talk. Its architecture supports simultaneous or staggered activation via EN1 and EN2, with no discharge path unless specified (this variant is non-discharge).
Each channel maintains tight regulation across –40°C to +85°C ambient, with dropout as low as 220mV at 300mA for VOUT > 3.0V, and line/load transient response optimized for fast-switching loads like RF transceivers and image sensors. The thermal pad requires PCB copper connection to GND for effective heat dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Channel 1: 3.0V fixed; Channel 2: 2.8V fixed - eliminates external feedback resistors and ensures stable dual-rail biasing for mixed-signal SoCs. |
| Output Current | 300mA per channel - sufficient to power baseband processors, RF front-ends, or camera ISPs without derating at +85°C. |
| PSRR | 75dB at 1kHz - suppresses switching noise from DC-DC converters feeding the LDO input, critical for clean RF supply rails. |
| Output Noise | 60µVrms (10Hz–100kHz) - enables use in noise-sensitive analog circuits such as ADC references or PLL VCO supplies. |
| Quiescent Current | 100µA typical with both channels enabled - extends battery life in always-on subsystems like sensor hubs or audio codecs. |
| Dropout Voltage | 220mV max at 300mA for 3.0V output - allows operation from single-cell Li-ion (3.0V min) while maintaining regulation under full load. |
| Enable Threshold | 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 functional as GND alone; must be connected to PCB ground plane for thermal performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Common ground reference | Two dedicated ground pins minimize ground bounce between channels; thermal pad must be soldered to large copper area tied to system GND. |
| VOUT1 (Pin 2) | Channel 1 regulated output | Delivers fixed 3.0V; requires local 1.0µF ceramic capacitor within 2mm of pin for stability and transient response. |
| VOUT2 (Pin 3) | Channel 2 regulated output | Delivers fixed 2.8V; independently decoupled-prevents coupling between 3.0V logic and 2.8V analog rails. |
| EN2 (Pin 5) | Channel 2 enable input | Active-high control; floating state prohibited-must be pulled to VIN or GND; enables independent power gating of 2.8V rail. |
| VIN2 (Pin 6) | Channel 2 input supply | Accepts 1.7V–5.25V; may be shared with VIN1 or supplied separately for input isolation in noise-critical designs. |
| VIN1 (Pin 7) | Channel 1 input supply | Independent input pin allows separate filtering or sequencing from VIN2-supports asymmetric input conditioning. |
| EN1 (Pin 8) | Channel 1 enable input | Active-high control with same threshold as EN2; permits staggered startup (e.g., 3.0V rail first, then 2.8V after stabilization). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Two fully isolated regulation paths with separate VIN, EN, and VOUT pins-eliminates need for two discrete regulators and saves 40% board area. |
| High PSRR & low noise | 75dB rejection at 1kHz + 60µVrms noise enables direct powering of RF transceivers and high-resolution ADCs without additional filtering. |
| Ultra-low quiescent current | 100µA typical with both channels active-reduces standby power in always-on peripherals like Bluetooth LE radios or touch controllers. |
| Wide input voltage range | 1.7V–5.25V operation supports single-cell Li-ion, USB VBUS, and multi-cell alkaline sources without external pre-regulation. |
| ±1% output accuracy | Tight tolerance over temperature and load ensures reliable operation of voltage-sensitive cores (e.g., ARM Cortex-M, ISP blocks) without margining. |
Applications
| Smartphone Baseband Power | RF Front-End Biasing |
|---|---|
|
Use Scenario: Supplying core voltage (3.0V) and I/O voltage (2.8V) to a cellular modem SoC in space-constrained smartphone PCBs. IC Role / Device Role / Timing Role: Dual-rail LDO providing tightly regulated, low-noise, sequenced power to processor domains with independent enable control. Use Value: Eliminates need for two discrete LDOs and associated passives, reducing BOM count by 7 components and saving 2.5mm² PCB area. |
Use Scenario: Powering PA driver stages and LNA bias networks in 4G/5G mmWave front-end modules where supply ripple directly impacts EVM. IC Role / Device Role / Timing Role: Low-noise, high-PSRR dual output supplying clean 2.8V to LNAs and 3.0V to driver amplifiers simultaneously. Use Value: 75dB PSRR at 1kHz suppresses DC-DC switching artifacts, improving adjacent channel leakage ratio (ACLR) by ≥3dB in LTE transmission. |
| Camera Module Core Supply | Portable Media Player Audio Codec |
|
Use Scenario: Delivering 2.8V to CIS image sensor analog block and 3.0V to its digital interface (MIPI D-PHY) in ultra-thin tablet cameras. IC Role / Device Role / Timing Role: Dual-output LDO with independent EN pins enabling precise power-up sequencing: analog rail first, then digital interface after stabilization. Use Value: Prevents sensor initialization faults caused by out-of-spec digital supply ramp; ±1% accuracy ensures consistent ADC reference tracking. |
Use Scenario: Powering DAC, headphone amplifier, and codec logic in battery-powered portable media players requiring long playback time. IC Role / Device Role / Timing Role: Low-IQ dual LDO supplying 3.0V to digital logic and 2.8V to analog audio paths with minimal standby drain. Use Value: 100µA quiescent current extends battery runtime by 12+ hours in suspend mode versus standard 300µA dual-LDO 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-3028RH4-7 | Successor with built-in auto-discharge (50Ω pull-down on VOUT), improved PSRR (80dB @ 1kHz), same pinout/package. | Required where rapid output discharge is needed during shutdown (e.g., to meet USB Type-C VCONN timing specs). | Select when discharge functionality is mandatory; otherwise AP7344 remains viable for non-discharge use cases. |
| TPL7407LDR | Single 7-channel high-side driver (not LDO); incompatible topology-no voltage regulation, only switch control. | Not functionally equivalent: used for LED/relay driving, not power regulation. | Not a valid alternative-misaligned device class; avoid for LDO replacement purposes. |
Compared with AP7344-3028RH4-7, the AP7345D offers enhanced discharge capability and PSRR but requires verifying discharge timing impact on downstream capacitance; TPL7407LDR is not a regulator and cannot substitute for voltage regulation tasks.
Availability
AP7344-3028RH4-7 is available at Aetrix Electronics and suitable for smartphone baseband power, RF front-end biasing, and camera module core supply requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for AP7344-3028RH4-7 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 ICs, with design centers in Asia, Europe, and the US, and manufacturing in IATF 16949-certified facilities.
The AP7344 belongs to Diodes' high-PSRR dual-LDO product line, engineered specifically for space-constrained, battery-powered communication devices demanding ultra-low noise and precise dual-rail regulation.
FAQ
What is the maximum allowable input voltage for AP7344-3028RH4-7?
The absolute maximum input voltage is 6.0V, but recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating safe operating area limits and may trigger internal protection or cause permanent damage. Operation above 5.25V is not characterized or guaranteed.
Does AP7344-3028RH4-7 include output discharge functionality?
No. This variant (RH4-7 suffix, no "D" prefix) is the non-discharge version. It lacks internal pull-down transistors on VOUT1/VOUT2. If rapid output discharge is required during shutdown, the AP7345D-3028RH4-7 should be selected instead.
Can EN1 and EN2 be tied together and driven by a single GPIO?
Yes-EN1 and EN2 may be paralleled and driven by one MCU pin, provided the GPIO can source/sink sufficient current (≤1µA leakage per EN pin) and meets the 1.3V minimum high-level threshold. However, independent control preserves sequencing flexibility for sensitive loads.
What is the thermal pad connection requirement for X2-DFN1612-8?
The exposed thermal pad must be soldered to a dedicated PCB copper pour connected to GND. It is not an electrical GND terminal by itself; using it without thermal connection degrades junction-to-board thermal resistance by >50%, risking thermal shutdown above 200mW dissipation.
AP7344-3028RH4-7 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, 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
AP7344-3028RH4-7 FAQ
1.How can I place an order for AP7344-3028RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7344-3028RH4-7 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 AP7344-3028RH4-7 reliable?
The price and inventory of AP7344-3028RH4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7344-3028RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7344-3028RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7344-3028RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7344-3028RH4-7?
AP7344-3028RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7344-3028RH4-7 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 AP7344-3028RH4-7?
For technical support, including AP7344-3028RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7344-3028RH4-7 requirements.
6.How does Aetrix verify that AP7344-3028RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7344-3028RH4-7 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 AP7344-3028RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7344-3028RH4-7?
All AP7344-3028RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7344-3028RH4-7, 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 AP7344-3028RH4-7 part is unused and in its original packaging.
Return procedure for AP7344-3028RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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