My Inquiry
My Account
Diodes Incorporated AP7345D-2828RH4-7
- Part No.:
- AP7345D-2828RH4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
AP7345D-2828RH4-7.pdf
- Description:
- IC REG LIN 2.8V/2.8V 300MA 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,305
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7345D-2828RH4-7 from Diodes Incorporated is a dual-channel, 300mA low-dropout linear regulator with independent enable control per channel, fixed 2.8V output on both channels, ±1% output voltage accuracy at +25°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 wireless devices.
For engineers reviewing the AP7345D-2828RH4-7 datasheet, AP7345D-2828RH4-7 pinout, AP7345D-2828RH4-7 application, or AP7345D-2828RH4-7 equivalent, key selection criteria include dual-channel independent enable timing, thermal shutdown threshold (+150°C), low quiescent current (50µA per active channel), and X2-DFN1612-8 package compatibility with high-density PCB layouts.
Technical Context
The AP7345D-2828RH4-7 integrates two independent CMOS-based LDO regulators sharing a common ground but featuring separate VIN, VOUT, and EN pins. Each channel includes a precision voltage reference, error amplifier, current-limit circuit, and thermal shutdown protection triggered at +150°C with +20°C hysteresis.
It supports auto-discharge via integrated N-channel MOSFETs (30Ω on-resistance when disabled) and delivers stable regulation under load transients up to 300mA per channel, with dropout voltage as low as 0.22V at 3.0V < VOUT ≤ 3.6V and 0.29V max at full load for 2.8V outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V per channel - eliminates external feedback resistors and reduces BOM count. |
| Max Output Current | 300mA per channel - supports simultaneous powering of baseband processor core and RF transceiver rails. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters in mixed-signal SoC designs. |
| Output Noise | 60µVrms (10Hz–100kHz) - meets stringent noise requirements for RF synthesizer and ADC reference supplies. |
| Quiescent Current | 50µA per active channel - enables >10-year battery life in always-on sensor nodes with periodic wake-up. |
| Dropout Voltage | 0.29V max at 300mA (VOUT = 2.8V) - allows operation from single-cell Li-ion (3.0V min) down to end-of-life voltage. |
| Enable Threshold | EN high ≥1.3V, EN low ≤0.5V - 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 exposed pad (non-functional GND connection recommended).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1, 4) | Power Ground Reference | Common return path for both regulators; requires low-impedance PCB copper pour connected to system ground plane. |
| VOUT1 (Pin 2) | Channel 1 Regulated Output | Delivers stable 2.8V to load; must be decoupled with ≥1µF ceramic capacitor placed within 2mm of pin. |
| VOUT2 (Pin 3) | Channel 2 Regulated Output | Independent 2.8V rail; enables split-power domains (e.g., RF front-end and baseband logic) with no cross-talk. |
| EN2 (Pin 5) | Channel 2 Enable Input | Active-high control; drives channel 2 into shutdown (<1.0µA standby) when pulled low; must not float. |
| VIN2 (Pin 6) | Channel 2 Input Supply | Accepts 1.7–5.25V; isolated from VIN1 to prevent noise coupling between input sources. |
| VIN1 (Pin 7) | Channel 1 Input Supply | Dedicated input for first rail; supports independent power sequencing with EN1. |
| EN1 (Pin 8) | Channel 1 Enable Input | Active-high control with identical threshold specs as EN2; enables precise power-up/down timing control per rail. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable inputs | EN1/EN2 allow staggered power sequencing - e.g., enable VOUT1 before VOUT2 to meet SoC boot timing requirements. |
| Integrated auto-discharge | 30Ω internal N-MOSFET per channel rapidly discharges output capacitors during shutdown - prevents residual voltage hold-up in safety-critical systems. |
| High PSRR + low noise | 75dB rejection at 1kHz + 60µVrms noise enables clean supply for RF PLLs and high-resolution ADCs without additional filtering. |
| Thermal shutdown with hysteresis | +150°C trip point with +20°C hysteresis prevents thermal oscillation during sustained overload - protects against PCB-level hot spots. |
| Wide input voltage range | 1.7V–5.25V operation supports direct connection to single-cell Li-ion, USB VBUS, or intermediate DC/DC outputs. |
Applications
| Smartphone Baseband Power | RF Transceiver Bias |
|---|---|
|
Use Scenario: Powering application processor I/O and memory interface rails in LTE/5G smartphones during active data transmission. IC Role / Device Role / Timing Role: Dual-rail LDO providing independent, noise-isolated 2.8V supplies with synchronized or staggered enable control. Use Value: Eliminates need for two discrete single-channel LDOs, reducing footprint by 40% and inter-rail coupling by >20dB vs. shared-input solutions. |
Use Scenario: Supplying bias voltage to PA driver stages and RF switch controllers in mmWave front-end modules. IC Role / Device Role / Timing Role: Low-noise, high-PSRR regulator delivering clean 2.8V to sensitive RF blocks while rejecting switching noise from PMIC. Use Value: 60µVrms noise ensures EVM degradation <0.3% in 256-QAM OFDM signals at 3.5GHz. |
| Portable Camera ISP Core | Wireless Adapter SoC |
|
Use Scenario: Powering image signal processor cores and high-speed MIPI CSI-2 interface transceivers in compact action cameras. IC Role / Device Role / Timing Role: Dual-output LDO with fast load transient response (<10µs recovery) for burst-mode ISP operation. Use Value: Maintains <±1% output regulation during 100mA–300mA load steps - prevents frame corruption in 4K video capture. |
Use Scenario: Regulating 2.8V for Wi-Fi 6/Bluetooth 5.2 combo chip baseband and radio sections in USB-C dongles. IC Role / Device Role / Timing Role: Enables independent power gating of radio vs. host interface to reduce idle current by 65%. Use Value: 50µA quiescent current per active channel extends battery runtime in Bluetooth LE beacon mode beyond 3 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A202828DSQR | Lower quiescent current (25µA), but only 200mA per channel and no auto-discharge. | Suitable for ultra-low-power IoT sensors, not RF or high-transient loads. | Select if standby current dominates design priority and peak load ≤200mA. |
| MCP1826S-2802802 | Higher dropout (0.45V @300mA), no independent EN pins - single enable controls both channels. | Acceptable for non-sequenced, cost-sensitive consumer audio accessories. | Select only when power sequencing is unnecessary and board space allows larger SOT-23-8 footprint. |
Compared with TPS7A202828DSQR and MCP1826S-2802802, the AP7345D-2828RH4-7 uniquely balances 300mA capability, dual independent enables, auto-discharge, and 60µVrms noise - making it optimal for RF-dense portable designs requiring tight power-domain isolation.
Availability
AP7345D-2828RH4-7 is available at Aetrix Electronics and suitable for smartphone baseband power, RF transceiver bias, portable camera ISP core, and wireless adapter SoC applications requiring stable component supply, consistent parametric performance across temperature, and long-term lifecycle support.
Supply support for AP7345D-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 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 dual-LDO product line, engineered specifically for noise-sensitive RF and mixed-signal subsystems in space-constrained portable electronics where dual-rail independence and thermal robustness are critical.
FAQ
What is the thermal shutdown behavior of AP7345D-2828RH4-7?
The device triggers thermal shutdown at +150°C with +20°C hysteresis, meaning it resumes regulation only after die temperature falls below +130°C. This prevents oscillatory shutdown/restart during sustained overload and is verified across -40°C to +85°C ambient. The thermal pad must be connected to a ≥25mm² copper area for effective heat dissipation.
Can AP7345D-2828RH4-7 operate with only one channel enabled?
Yes - EN1 and EN2 are fully independent. When EN1 is high and EN2 is low, only VOUT1 delivers 2.8V at up to 300mA while VOUT2 is fully shut down (<1.0µA quiescent). This configuration is commonly used to power baseband logic before enabling RF sections, and is validated in the datasheet's recommended operating conditions table.
What output capacitor value is required for stability?
A minimum 1.0µF ceramic capacitor is required per VOUT pin, placed within 2mm of the pin and referenced directly to the nearest GND pin. The device is stable with X5R/X7R types having ESR <10mΩ; bulk tantalum or polymer caps may be added in parallel for large transient loads, but the 1.0µF ceramic must remain primary for phase margin.
Does AP7345D-2828RH4-7 support reverse current blocking?
No - the device lacks intrinsic reverse current blocking. When VIN drops below VOUT, current can flow backward from VOUT to VIN through the pass FET body diode. For applications requiring reverse blocking (e.g., battery backup paths), an external Schottky diode or ideal diode controller must be added in series with each VIN pin.
AP7345D-2828RH4-7 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):
- 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):
- 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-2828RH4-7 FAQ
1.How can I place an order for AP7345D-2828RH4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7345D-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 AP7345D-2828RH4-7 reliable?
The price and inventory of AP7345D-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 AP7345D-2828RH4-7 is usually 5 days.
3.What payment methods are accepted for AP7345D-2828RH4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7345D-2828RH4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7345D-2828RH4-7?
AP7345D-2828RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7345D-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 AP7345D-2828RH4-7?
For technical support, including AP7345D-2828RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7345D-2828RH4-7 requirements.
6.How does Aetrix verify that AP7345D-2828RH4-7 is sourced from the original manufacturer or authorized distributors?
All AP7345D-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 AP7345D-2828RH4-7 meets industry standards.
7.What is the process for return or replacement of AP7345D-2828RH4-7?
All AP7345D-2828RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7345D-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 AP7345D-2828RH4-7 part is unused and in its original packaging.
Return procedure for AP7345D-2828RH4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7345D-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
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
