My Inquiry
My Account
Diodes Incorporated AP7344D-2828RH4-7
- Part No.:
- AP7344D-2828RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7344D-2828RH4-7.pdf
- Description:
- IC REG LIN 2.8V/2.8V X2DFN1612-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7344D-2828RH4-7 from Diodes Incorporated is a dual-channel, 300mA low-dropout linear regulator with fixed 2.8V outputs per channel, high PSRR (75dB at 1kHz), ultra-low output noise (60µVrms, 10Hz–100kHz), and ±1% output voltage accuracy over temperature. 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 AP7344D-2828RH4-7 datasheet, AP7344D-2828RH4-7 pinout, AP7344D-2828RH4-7 application, or AP7344D-2828RH4-7 equivalent, key selection criteria include dual-channel independent enable control, thermal-pad-equipped X2-DFN1612-8 packaging, low-quiescent-current operation (50µA per active channel), and built-in discharge functionality for rapid VOUT decay during shutdown.
Technical Context
The AP7344D-2828RH4-7 integrates two independent CMOS-based LDO regulators sharing no internal circuitry except ground reference; each includes its own error amplifier, voltage reference, current-limit protection, and dedicated enable input. The D-suffix denotes integrated auto-discharge MOSFETs on both channels (50Ω typical on-resistance), enabling fast output voltage decay when disabled.
It delivers stable regulation across −40°C to +85°C ambient, supports 300mA continuous output per channel with dropout as low as 220mV at 3.0V < VOUT ≤ 3.6V, and maintains 75dB PSRR at 1kHz under 30mA load - critical for RF supply rail isolation in multi-band wireless systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V per channel; enables identical biasing for dual-core processors or matched analog subsystems without external feedback. |
| Max Output Current | 300mA per channel; sufficient to power dual ARM Cortex-M cores or baseband + RF ICs simultaneously. |
| PSRR @ 1kHz | 75dB; suppresses switching noise from adjacent DC-DC converters feeding noisy system rails. |
| Output Noise | 60µVrms (10Hz–100kHz); preserves SNR in audio codecs or ADC reference supplies. |
| Quiescent Current | 50µA per active channel; extends battery life in always-on sensor nodes or standby modes. |
| Dropout Voltage | 260mV typical at 300mA (VOUT = 2.8V); allows operation from single-cell Li-ion (3.0V min) with margin. |
| Enable Threshold | VEN(HI) ≥ 1.3V; compatible with 1.8V/3.3V GPIO without level-shifting. |
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 performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Power ground reference | Dual ground pins reduce ground impedance and improve PSRR; must connect to low-impedance PCB ground plane. |
| VOUT1 (Pin 2) | Channel 1 regulated output | Delivers 2.8V to primary load (e.g., application processor core); requires local 1µF ceramic capacitor. |
| VOUT2 (Pin 3) | Channel 2 regulated output | Delivers independent 2.8V to secondary load (e.g., RF transceiver); decoupled separately from VOUT1. |
| EN2 (Pin 5) | Channel 2 enable input | Active-high logic; drives high (>1.3V) to activate VOUT2; floating prohibited - must be tied to VIN or GND. |
| VIN2 (Pin 6) | Channel 2 input supply | Accepts 1.7V–5.25V; may be shared with VIN1 or isolated for noise-sensitive domains. |
| VIN1 (Pin 7) | Channel 1 input supply | Independent input path enables rail sequencing or separate filtering for mixed-signal loads. |
| EN1 (Pin 8) | Channel 1 enable input | Active-high logic; enables precise power-up timing control for boot-critical subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1/EN2 allow staggered power-up of processor + peripheral rails to meet reset timing requirements. |
| Built-in discharge MOSFETs | 50Ω typical on-resistance per channel rapidly discharges VOUT to GND upon disable - eliminates hold-up time in battery-powered shutdown. |
| Low-noise 60µVrms output | Enables direct powering of precision analog circuits (e.g., VCO bias, ADC reference) without additional filtering. |
| ±1% output accuracy (25°C) | Guarantees consistent voltage margins for 2.8V I/O standards across process/voltage/temperature corners. |
| 75dB PSRR at 1kHz | Rejects ripple from switching regulators feeding the same battery source - critical for RF front-end stability. |
Applications
| Smartphone Baseband + RF Power Rails | Portable Camera ISP + Sensor Bias |
|---|---|
|
Use Scenario: Simultaneous power delivery to baseband processor (2.8V core) and LTE/Wi-Fi transceiver (2.8V PA bias). IC Role / Device Role / Timing Role: Dual-channel LDO provides isolated, low-noise, sequenced 2.8V rails with independent EN control for boot synchronization. Use Value: Eliminates need for two discrete LDOs and reduces BOM count while maintaining PSRR >70dB on both rails under dynamic load. |
Use Scenario: Powering image signal processor (ISP) core and CMOS image sensor analog bias from single-cell Li-ion. IC Role / Device Role / Timing Role: Delivers matched 2.8V outputs with <1.5% total variation across −40°C to +85°C for color fidelity consistency. Use Value: Integrated discharge prevents sensor ghosting during rapid camera mode transitions by clearing residual VOUT in <100µs. |
| Wireless Headset Audio Codec + Bluetooth SoC | Industrial Handheld Scanner Logic + Laser Driver |
|
Use Scenario: Supplying 2.8V to Bluetooth SoC digital core and audio codec analog section in ultra-thin earbud PCB. IC Role / Device Role / Timing Role: Compact X2-DFN1612-8 footprint enables dual-rail regulation within 2.0mm² board area; EN1/EN2 support low-power listening mode. Use Value: 50µA quiescent current per active channel extends talk time beyond 6 hours on 120mAh battery. |
Use Scenario: Powering 2.8V FPGA logic bank and 2.8V laser diode driver in ruggedized barcode scanner. IC Role / Device Role / Timing Role: Independent VIN1/VIN2 inputs allow separate LC filtering for digital and high-current analog paths. Use Value: 300mA per channel sustains 250mA pulsed laser drive without dropout, while 75dB PSRR prevents EMI-induced decode errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7345D-2828RH4-7 | Successor device; identical pinout, same 2.8V/2.8V outputs, but improved PSRR (80dB @ 1kHz) and lower noise (55µVrms). | Recommended for new designs requiring tighter noise/PSRR specs; supports same PCB layout. | Select AP7345D if designing for production beyond Q3 2024; AP7344D remains viable for legacy qualification or cost-sensitive builds. |
| TPL7407LDR | Single-channel 250mA LDO (2.8V), no discharge function, SOT-23-5 package; lacks dual output and thermal pad. | Requires two devices for dual-rail use; higher thermal resistance limits sustained 300mA operation. | Only suitable where board space permits duplication and discharge is unnecessary; not a drop-in replacement. |
Compared with AP7345D-2828RH4-7, this part offers proven reliability in existing designs but trades 5dB PSRR and 5µVrms noise for established qualification; versus TPL7407LDR, it delivers true dual-rail integration with thermal efficiency unattainable in SOT-23.
Availability
AP7344D-2828RH4-7 is available at Aetrix Electronics and suitable for smartphone baseband power, portable camera sensor bias, and wireless headset audio codec applications requiring stable component supply and long-term industrial availability.
Supply support for AP7344D-2828RH4-7 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 for power management, signal integrity, and connectivity applications.
The AP7344 series belongs to Diodes' high-PSRR, low-noise LDO portfolio designed specifically for battery-powered portable electronics demanding dual-rail precision regulation with minimal footprint and thermal overhead.
FAQ
Is the AP7344D-2828RH4-7 pin-compatible with the AP7345D-2828RH4-7?
Yes - both devices use the identical X2-DFN1612-8 package with matching pin assignments, thermal pad layout, and electrical interface. The AP7345D is a direct functional upgrade with improved PSRR and noise performance, requiring no PCB redesign.
What is the maximum allowable input voltage for continuous operation?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks exceeding power dissipation limits even at light loads due to the device's low dropout architecture and thermal constraints of the X2-DFN1612-8 package.
Can EN1 and EN2 be tied together and driven by a single GPIO?
Yes - EN1 and EN2 may be paralleled and driven by one microcontroller GPIO, provided the driving source meets the 1.3V minimum high-level threshold and can sink/source ≤1µA leakage. This configures both channels as a single on/off switch, losing independent sequencing capability.
Does the thermal pad require solder connection to PCB ground?
The thermal pad is not internally connected to any pin; however, Diodes recommends connecting it to a large copper pour tied to GND for optimal thermal dissipation. Leaving it unconnected degrades junction-to-ambient thermal resistance by >30°C/W, risking thermal shutdown above 150mA per channel at +85°C ambient.
AP7344D-2828RH4-7 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, 2.8V
- 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-2828RH4-7 FAQ
1.How can I place an order for AP7344D-2828RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7344D-2828RH4-7 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-2828RH4-7 reliable?
The price and inventory of AP7344D-2828RH4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7344D-2828RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7344D-2828RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7344D-2828RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7344D-2828RH4-7?
AP7344D-2828RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7344D-2828RH4-7 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-2828RH4-7?
For technical support, including AP7344D-2828RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7344D-2828RH4-7 requirements.
6.How does Aetrix verify that AP7344D-2828RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7344D-2828RH4-7 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-2828RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7344D-2828RH4-7?
All AP7344D-2828RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7344D-2828RH4-7, 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-2828RH4-7 part is unused and in its original packaging.
Return procedure for AP7344D-2828RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7344D-2828RH4-7 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
