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Diodes Incorporated AP7351D-30W5-7
- Part No.:
- AP7351D-30W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7351D-30W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,823
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Product details
Overview
AP7351D-30W5-7 from Diodes Incorporated is a 3.0V fixed-output, 150mA ultra-low quiescent current LDO regulator in SOT25 package, featuring ±1% output voltage accuracy, 0.5µA quiescent current, and enable-controlled shutdown. It operates from 1.4V to 5.5V input, delivers stable power to low-power wearable sensors and IoT edge nodes, and integrates active output discharge for fast VOUT ramp-down.
For engineers reviewing the AP7351D-30W5-7 datasheet, AP7351D-30W5-7 pinout, AP7351D-30W5-7 application, or AP7351D-30W5-7 equivalent, key selection criteria include dropout voltage at 150mA (0.18V typ), standby current (0.02µA), PSRR (60dB @ 1kHz), thermal shutdown threshold (+160°C), and compatibility with 0.1µF ceramic input/output capacitors.
Technical Context
The AP7351D-30W5-7 implements a PMOS pass transistor architecture enabling ultra-low dropout and sub-µA quiescent operation. Its internal voltage reference and error amplifier maintain ±1% output accuracy across -40°C to +85°C ambient temperature and 1mA–150mA load range.
Enable control is implemented via a dedicated EN pin with defined logic thresholds (VIH ≥ 1.0V, VIL ≤ 0.4V); pulling EN low forces shutdown with 0.02µA standby current and activates internal discharge path (35Ω typical) to rapidly discharge VOUT. The device lacks external feedback, relying on factory-trimmed internal resistor network for fixed 3.0V output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% at +25°C; ±2% over full temperature range - ensures stable MCU core or sensor bias under battery voltage sag. |
| Max Output Current | 150mA continuous - supports moderate-current peripherals like BLE radios or image sensor interfaces without thermal derating in SOT25. |
| Quiescent Current | 0.5µA typ - enables multi-year battery life in always-on wearables with infrequent wake-up cycles. |
| Dropout Voltage | 0.18V typ at 150mA - allows regulation down to VIN = 3.18V, critical for single-cell Li-ion (3.0–4.2V) or coin-cell (2.0–3.6V) systems. |
| PSRR | 60dB @ 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails. |
| Enable Thresholds | VIH ≥ 1.0V, VIL ≤ 0.4V - compatible with 1.8V/3.3V GPIO without level-shifting; prevents false turn-on from leakage or floating inputs. |
| Thermal Shutdown | +160°C threshold with +20°C hysteresis - protects against sustained overload or poor PCB copper area while allowing brief peak loads. |
Pinout & Package
SOT25 package (3.0mm × 2.8mm × 1.3mm), RoHS-compliant matte tin-plated leads, moisture sensitivity level 1. Exposed pad not electrically connected; recommended to connect to GND for thermal improvement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN1 (VOUT) | Regulated output node | Delivers 3.0V to load; requires 0.1µF ceramic capacitor placed within 2mm of pin for stability and transient response. |
| PIN2 (GND) | Power ground reference | Return path for input, output, and internal circuitry; must connect to low-impedance system ground plane to minimize noise coupling. |
| PIN3 (EN) | Active-high enable control | Drives regulator ON/OFF; must be actively driven (not floated); internal pull-down absent - external tie-to-VIN required if unused. |
| PIN4 (VIN) | Unregulated input supply | Accepts 1.4–5.5V; requires local 0.1µF ceramic decoupling capacitor between PIN4 and PIN2 to suppress supply glitches. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.5µA typical - reduces no-load battery drain by >90% vs. standard LDOs, extending shelf life of sealed medical wearables. |
| Active output discharge | 35Ω internal FET path - discharges VOUT to <0.1V within 100µs after EN deactivation, preventing unintended wake-up of downstream logic. |
| Wide input voltage range | 1.4V to 5.5V - supports direct connection to single alkaline, LiFePO₄, or boosted energy harvesting sources without pre-regulation. |
| High PSRR at 1kHz | 60dB - maintains clean 3.0V rail when co-located with noisy buck converters in compact sensor modules. |
| Guaranteed 150mA output | Specified across -40°C to +85°C - eliminates need for derating in industrial-grade portable equipment operating in uncontrolled environments. |
Applications
| Wearable Health Monitor | IoT Environmental Sensor Node |
|---|---|
|
Use Scenario: Continuous ECG/PPG sensing in wrist-worn patch with Bluetooth LE transmission every 5 minutes. IC Role / Device Role / Timing Role: Primary power regulator for analog front-end and BLE SoC, activated only during measurement and transmit bursts. Use Value: 0.02µA standby current extends CR2032 battery life beyond 18 months; 3.0V accuracy ensures consistent ADC reference and RF output power. |
Use Scenario: Battery-powered soil moisture and temperature node deployed in agricultural fields for 2+ years. IC Role / Device Role / Timing Role: Stable 3.0V supply for capacitive moisture sensor IC and ultra-low-power microcontroller in intermittent wake-sleep cycle. Use Value: 1.4V minimum VIN enables operation down to 1.5V battery voltage; active discharge prevents sensor latch-up during deep sleep transitions. |
| Wireless Camera Module | Industrial Predictive Maintenance Sensor |
|
Use Scenario: Miniature HD camera module in smart doorbell, powered by rechargeable Li-ion with limited PCB space. IC Role / Device Role / Timing Role: Clean 3.0V rail for image sensor and ISP, synchronized with EN signal to gate power during video capture only. Use Value: 0.18V dropout preserves headroom for 3.3V logic interface; 60dB PSRR prevents switching noise from DC/DC converter from corrupting image data. |
Use Scenario: Vibration and temperature sensor mounted on rotating machinery, operating in -40°C to +85°C ambient with 10-year service interval. IC Role / Device Role / Timing Role: Regulator for MEMS accelerometer and low-power MCU in harsh industrial environment with wide input voltage variation. Use Value: ±2% output accuracy over full temperature range ensures calibrated sensor readings; +160°C thermal shutdown prevents failure during bearing overheating events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3002E/TO | 3.0V fixed, 250mA, 1.6µA IQ, no active discharge, TO-92 package | Larger footprint, higher quiescent current, no fast VOUT discharge - unsuitable for strict battery-life or rapid power-cycle designs | Select only if TO-92 through-hole assembly is mandatory and discharge timing is non-critical. |
| TPS70630DBVR | 3.0V fixed, 150mA, 0.9µA IQ, active discharge, SOT-23-5 package | Same current rating and discharge function, but 1.8× higher IQ and 5-pin layout requiring additional PCB real estate | Prefer AP7351D-30W5-7 for space-constrained designs where 0.5µA IQ and 4-pin SOT25 reduce BOM and layout complexity. |
Compared with MCP1700-3002E/TO and TPS70630DBVR, AP7351D-30W5-7 delivers the lowest quiescent current in a 4-pin SOT25 footprint with guaranteed active discharge - making it optimal for miniaturized, long-life battery systems where every nanoamp and millimeter matters.
Availability
AP7351D-30W5-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor nodes, and wireless camera modules requiring stable component supply with guaranteed long-term manufacturability and lifecycle support.
Supply support for AP7351D-30W5-7 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity applications.
The AP7351D belongs to Diodes' ultra-low-IQ LDO family, engineered specifically for extended-battery-life portable and industrial edge devices where micropower efficiency and small-footprint integration are primary design constraints.
FAQ
What is the minimum input voltage required for AP7351D-30W5-7 to regulate 3.0V output at 150mA?
The minimum input voltage is determined by dropout voltage: at 150mA, typical dropout is 0.18V, so VIN(min) = 3.0V + 0.18V = 3.18V. The absolute minimum specified VIN is 1.4V, but regulation fails below 3.18V under full load. For reliable 150mA operation, maintain VIN ≥ 3.2V.
Does AP7351D-30W5-7 require an external pull-up on the EN pin if not actively controlled?
Yes. The EN pin has no internal pull-up; leaving it floating risks undefined operation. If enable functionality is unused, tie EN directly to VIN to ensure permanent activation. A resistor-based pull-up is unnecessary and adds leakage risk - direct connection is preferred per Diodes' application guidance.
Can AP7351D-30W5-7 be used with input voltages above 5.5V, such as 6.0V, for short durations?
No. Absolute maximum VIN is 6.0V, but this is a stress rating - operation above 5.5V violates recommended conditions and may cause irreversible damage. Transient spikes exceeding 5.5V must be clamped externally (e.g., with TVS diode) before reaching PIN4 to ensure reliability.
Is the exposed pad on the SOT25 package of AP7351D-30W5-7 electrically connected to GND?
No. The exposed pad in the SOT25 package is not internally connected to any circuit node. Diodes recommends connecting it to the PCB ground plane solely for thermal enhancement - it serves no electrical function and must not be used as a substitute for PIN2 (GND) connection.
AP7351D-30W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7351D-30W5-7 FAQ
1.How can I place an order for AP7351D-30W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7351D-30W5-7 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 AP7351D-30W5-7 reliable?
The price and inventory of AP7351D-30W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7351D-30W5-7 is usually 5 days.
3.What payment methods are accepted for AP7351D-30W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7351D-30W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7351D-30W5-7?
AP7351D-30W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7351D-30W5-7 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 AP7351D-30W5-7?
For technical support, including AP7351D-30W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7351D-30W5-7 requirements.
6.How does Aetrix verify that AP7351D-30W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7351D-30W5-7 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 AP7351D-30W5-7 meets industry standards.
7.What is the process for return or replacement of AP7351D-30W5-7?
All AP7351D-30W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7351D-30W5-7, 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 AP7351D-30W5-7 part is unused and in its original packaging.
Return procedure for AP7351D-30W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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