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Diodes Incorporated AP7351D-08W5-7
- Part No.:
- AP7351D-08W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7351D-08W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,936
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Product details
Overview
AP7351D-08W5-7 from Diodes Incorporated is a fixed 0.8V, 150mA ultra-low quiescent current LDO regulator in SOT25 package with enable control, ±1% output voltage accuracy at +25°C, 0.5µA typical quiescent current, and 60dB PSRR at 1kHz - designed for power management in compact battery-operated wearable and IoT sensor modules.
For engineers reviewing the AP7351D-08W5-7 datasheet, AP7351D-08W5-7 pinout, AP7351D-08W5-7 application, or AP7351D-08W5-7 equivalent, key selection criteria include dropout voltage at 150mA (0.9V typ), standby current (0.02µA), EN logic thresholds (0.4V low / 1.0V high), and thermal shutdown behavior (+160°C).
Technical Context
The AP7351D-08W5-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and active output discharge path. Its internal resistor network fixes VOUT at 0.8V, eliminating external feedback components.
It operates across 1.4V to 5.5V input range with guaranteed 150mA output current, supports fast enable turn-on/turn-off response (microsecond-scale), and includes thermal shutdown (+160°C) with +20°C hysteresis for robust overtemperature protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.8V ±1% at +25°C - enables precise biasing of ultra-low-voltage logic and analog sensors. |
| Max Output Current | 150mA - sufficient to power microcontrollers, BLE radios, and image sensor interfaces in compact wearables. |
| Quiescent Current | 0.5µA typ - extends battery life in always-on monitoring applications such as fitness trackers. |
| Dropout Voltage | 0.9V typ at 150mA - allows operation from single-cell Li-ion (3.0V min) or coin-cell (3.0V) with margin. |
| PSRR | 60dB at 1kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Enable Thresholds | VEN(HI) = 1.0V min, VEN(LO) = 0.4V max - compatible with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Shutdown | +160°C activation with +20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
SOT25 package (3.0mm × 2.8mm × 1.3mm), 5-pin surface-mount with exposed pad (EP) for thermal dissipation. Pin 4 is VIN, Pin 1 is VOUT, Pin 2 is GND, Pin 3 is EN, and Pin 5 is NC (no connection) for fixed-output versions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN1 | VOUT | Regulated 0.8V output - must be decoupled with ≥0.1µF ceramic capacitor placed adjacent to pin. |
| PIN2 | GND | Power ground reference - requires low-impedance connection to PCB ground plane for stability and noise rejection. |
| PIN3 | EN | Active-high enable - driven high (>1.0V) to activate regulator; pulled low (<0.4V) to enter 0.02µA standby mode. |
| PIN4 | VIN | Input supply (1.4–5.5V) - requires ≥0.1µF ceramic decoupling capacitor placed within 2mm of pin. |
| PIN5 | NC | No internal connection - left unconnected; not used for fixed-output variants like AP7351D-08W5-7. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 0.5µA typical - reduces no-load power loss by >95% vs. standard LDOs, critical for multi-year battery life. |
| Active output discharge | 35Ω internal discharge path - ensures rapid VOUT decay on shutdown, preventing back-powering of downstream circuits. |
| Wide input voltage range | 1.4V to 5.5V - supports direct connection to single alkaline, Li-ion, or USB-powered systems without pre-regulation. |
| High accuracy output | ±1% at +25°C, ±2% over −40°C to +85°C - eliminates need for post-regulation trimming in precision analog signal chains. |
| Moisture sensitivity level | MSL1 per J-STD-020 - allows unlimited floor life and standard reflow without baking, simplifying manufacturing. |
Applications
| Wearable Electronics | Sensor Module for IoT |
|---|---|
|
Use Scenario: Powering heart-rate monitor ASIC and optical sensor in wrist-worn fitness tracker operating continuously on CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 0.8V supply rail for ultra-low-power sensor interface and digital controller. Use Value: 0.5µA quiescent current extends battery life beyond 12 months while maintaining ±1% regulation under dynamic load steps. |
Use Scenario: Regulating power for MEMS accelerometer and BLE SoC in industrial predictive maintenance node deployed in remote locations. IC Role / Device Role / Timing Role: Stable 0.8V bias source enabling accurate sensor ADC reference and low-noise analog front-end operation. Use Value: 60dB PSRR at 1kHz rejects noise from shared DC-DC converter, preserving 12-bit sensor measurement integrity. |
| Wireless Communication Module | Battery-Operated Camera |
|
Use Scenario: Supplying 0.8V core voltage to Bluetooth Low Energy transceiver IC in asset-tracking tag powered by primary lithium thionyl chloride cell. IC Role / Device Role / Timing Role: Enable-controlled LDO delivering burst-mode power during radio transmit/receive cycles. Use Value: 0.02µA standby current minimizes self-discharge during multi-hour sleep intervals between transmissions. |
Use Scenario: Providing regulated 0.8V to CMOS image sensor and ISP in portable barcode scanner using two AA alkaline cells. IC Role / Device Role / Timing Role: Low-dropout voltage source maintaining stable sensor bias across input voltage decay from 3.0V to 1.4V. Use Value: 0.9V dropout at 150mA ensures full functionality until battery reaches end-of-life voltage, maximizing usable runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-0802E/TT | 0.8V fixed, 250mA, 1.6µA IQ, no active discharge, SOT23-5 | Lacks output discharge; higher IQ reduces battery life in deep-sleep systems | Choose if higher output current needed and discharge not required |
| TPS7A0230PDBVR | 0.8V fixed, 300mA, 0.25µA IQ, active discharge, X2SON-4 | Lower IQ but smaller 4-pin package lacks EN pin and NC terminal flexibility | Prefer for space-constrained designs where EN control is unnecessary |
Compared with MCP1700T-0802E/TT, AP7351D-08W5-7 delivers 3× lower quiescent current and integrated discharge; versus TPS7A0230PDBVR, it offers explicit EN control and SOT25 layout compatibility while trading 150mA for 300mA capability.
Availability
AP7351D-08W5-7 is available at Aetrix Electronics and suitable for wearable electronics, IoT sensor modules, and wireless communication devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP7351D-08W5-7 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, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.
The AP7351D belongs to Diodes' ultra-low-IQ LDO family targeting battery-powered edge devices, emphasizing extended runtime, small footprint, and seamless integration into space- and power-constrained systems.
FAQ
What is the minimum input voltage required for AP7351D-08W5-7 to regulate 0.8V output at 150mA?
The absolute minimum input voltage is determined by dropout: 0.8V + 0.9V = 1.7V (typical). However, the device guarantees operation down to 1.4V input - at that level, output current capability degrades below 150mA due to insufficient headroom. For full 150mA performance, VIN ≥ 1.7V is recommended.
Does AP7351D-08W5-7 require an external pull-up on the EN pin if unused?
No - the EN pin must not be left floating. If enable functionality is not needed, tie EN directly to VIN. This ensures reliable turn-on without additional components or leakage paths. Internal input thresholds (1.0V high, 0.4V low) guarantee clean logic-level compatibility with common MCU GPIOs.
Can AP7351D-08W5-7 be used with ceramic output capacitors smaller than 0.1µF?
No - Diodes specifies ≥0.1µF ceramic COUT for stability and transient response. Using smaller values risks oscillation or excessive output voltage deviation during load steps. X5R/X7R dielectrics are recommended to maintain capacitance and ESR across temperature and bias conditions.
Is the exposed pad (EP) on the SOT25 package electrically connected internally?
No - the exposed pad is thermally conductive only and not electrically tied to any internal node. It should be connected to PCB ground plane via multiple vias for optimal thermal dissipation, but must not serve as the sole GND return path. Pin 2 remains the designated signal ground terminal.
AP7351D-08W5-7 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):
- 0.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7351D-08W5-7 FAQ
1.How can I place an order for AP7351D-08W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7351D-08W5-7 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-08W5-7 reliable?
The price and inventory of AP7351D-08W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7351D-08W5-7 is usually 5 days.
3.What payment methods are accepted for AP7351D-08W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7351D-08W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7351D-08W5-7?
AP7351D-08W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7351D-08W5-7 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-08W5-7?
For technical support, including AP7351D-08W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7351D-08W5-7 requirements.
6.How does Aetrix verify that AP7351D-08W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7351D-08W5-7 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-08W5-7 meets industry standards.
7.What is the process for return or replacement of AP7351D-08W5-7?
All AP7351D-08W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7351D-08W5-7, 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-08W5-7 part is unused and in its original packaging.
Return procedure for AP7351D-08W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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