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Diodes Incorporated AP7370-50W5-7
- Part No.:
- AP7370-50W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7370-50W5-7.pdf
- Description:
- IC REG LINEAR 5V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:24,029
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Product details
Overview
AP7370-50W5-7 from Diodes Incorporated is a fixed 5.0V, 300mA ultra-low dropout (ULDO) linear regulator in SOT25 package, featuring 18V max input voltage, 500mV dropout at 100mA, ±1% output accuracy, and reverse current protection-designed for USB-powered instrumentation and portable metering systems requiring stable low-noise bias under wide input variation.
For engineers reviewing the AP7370-50W5-7 datasheet, AP7370-50W5-7 pinout, AP7370-50W5-7 application, or AP7370-50W5-7 equivalent, this page delivers verified electrical specs, thermal behavior, SOT25 terminal mapping, real-world load transient response, and validated alternatives for battery-powered and industrial portable equipment design.
Technical Context
The AP7370-50W5-7 integrates a precision voltage reference, error amplifier, and current-limit circuit to maintain regulation across 3.2–18V input while delivering up to 300mA with <2.5µA quiescent current at no load. Its internal architecture includes thermal shutdown (160°C trip), reverse current blocking, and compatibility with 1µF ceramic output capacitors.
Designed for fixed-output operation, it lacks an external feedback network-output voltage is factory-set to 5.0V with ±1% tolerance over -40°C to +125°C junction temperature. Dropout voltage remains stable across temperature and load due to optimized pass transistor drive and low-impedance internal routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±1% - ensures stable MCU core/peripheral rail without external trimming |
| Max Input Voltage | 18V - supports direct connection to unregulated 12V/15V battery or adapter inputs |
| Dropout Voltage | 450–550mV @ 100mA - enables regulation down to VIN = 5.45V, critical for Li-ion+LDO backup systems |
| Quiescent Current | 1.5–2.5µA @ IOUT = 0 - extends battery life in always-on metering and sensor nodes |
| Current Limit | 350mA min - provides robust short-circuit protection without latch-up |
| Line Regulation | 0.05%/V - maintains output stability across wide input swings (e.g., 5.3V to 18V) |
| Thermal Shutdown | 160°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking |
Pinout & Package
SOT25 (W5) package: 5-pin surface-mount, 2.8mm × 2.9mm footprint, exposed pad not present, RoHS-compliant, JEDEC-standard outline with 0.95mm nominal height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts 3.2–18V; requires local 1µF ceramic decoupling |
| 2 | GND | Analog/digital ground reference; must be low-impedance path to minimize noise coupling |
| 3 | NC | No-connect pin; electrically isolated; no internal connection or function |
| 4 | VOUT | Regulated 5.0V output; drives load up to 300mA; requires 1µF ceramic capacitor for stability |
| 5 | NC | No-connect pin; electrically isolated; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range (3.2–18V) | Eliminates need for pre-regulation stages in multi-battery or adapter-fed portable instruments |
| Ultra-low quiescent current (≤2.5µA) | Reduces standby power loss by >90% vs. standard LDOs, enabling multi-year battery life in weigh scales |
| Reverse current protection | Blocks backfeed from VOUT to VIN during input removal-critical for hot-swap and dual-supply systems |
| Thermal shutdown + hysteresis | Auto-recovery after cooling avoids system lockup; 20°C hysteresis prevents oscillation near trip point |
| Low-ESR ceramic capacitor compatible | Enables use of compact, high-reliability 0402/0603 MLCCs instead of bulkier tantalum or aluminum electrolytics |
Applications
| Battery-Powered Weighing Scales | Portable Multimeters |
|---|---|
Use Scenario: Precision analog front-end (AFE) and microcontroller bias in handheld digital scales operating from single Li-ion or AA/AAA cells. IC Role / Device Role / Timing Role: Primary 5.0V LDO supplying ADC reference, op-amps, and MCU I/O rails with minimal noise and drift. Use Value: ±1% output accuracy and 0.05%/V line regulation ensure consistent measurement resolution across battery discharge (3.2–4.2V). |
Use Scenario: Dual-rail power for LCD display, autoranging circuitry, and precision voltage reference in field-deployable multimeters. IC Role / Device Role / Timing Role: Fixed 5.0V regulator for digital logic and analog signal conditioning blocks, replacing discrete Zener-based solutions. Use Value: 500mV dropout allows full-scale operation down to 5.5V input-enabling extended runtime on partially depleted 9V alkaline batteries. |
| USB-Powered Data Loggers | Industrial Handheld Meters |
Use Scenario: Compact environmental sensor node powered via USB 5V bus, logging temperature/humidity with low-power MCU and flash memory. IC Role / Device Role / Timing Role: Clean, low-noise 5.0V supply for MCU, sensors, and serial interface ICs; reverse current protection isolates VBUS during host disconnect. Use Value: 2.5µA quiescent current minimizes parasitic drain when USB is unplugged and device enters deep sleep mode. |
Use Scenario: Ruggedized portable meter for field calibration of pressure, flow, or level transmitters in oil/gas or water infrastructure. IC Role / Device Role / Timing Role: Main 5.0V regulator for microcontroller, RS-485 transceiver, and analog input stage in harsh ESD/noise environments. Use Value: 6kV HBM ESD rating and thermal shutdown protect against repeated electrostatic events and ambient overheating in unventilated enclosures. |
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 |
|---|---|---|---|
| MCP1703T-5002E/MB | 5.0V ±2%, 250mA, 600mV dropout @ 100mA, 3µA IQ, SOT23-5 | Lower current capability and higher dropout limit usable headroom in 5.5V-input designs | Select when board space is constrained and 250mA load ceiling is sufficient |
| TPS7A2050PDBVR | 5.0V ±1%, 300mA, 170mV dropout @ 100mA, 6.5µA IQ, SOT23-5 | Superior dropout enables operation down to 5.17V input but higher IQ increases standby power | Select for ultra-low-drop applications where input rarely exceeds 5.5V and thermal margin is ample |
Compared with AP7370-50W5-7, MCP1703T-5002E/MB trades current and dropout for smaller SOT23-5 size, while TPS7A2050PDBVR offers dramatically lower dropout at the cost of 2.6× higher quiescent current-making AP7370 optimal for 12V-input portable instrumentation needing balanced performance.
Availability
AP7370-50W5-7 is available at Aetrix Electronics and suitable for battery-powered weighing scales, portable multimeters, and USB-powered data loggers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP7370-50W5-7 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 devices, with design centers across Asia, Europe, and the US, serving industrial, computing, and consumer markets.
The AP7370 series belongs to Diodes' high-voltage ULDO product line, engineered specifically for portable instrumentation and battery-powered equipment demanding wide VIN range, low IQ, and robust protection features.
FAQ
Is AP7370-50W5-7 recommended for new designs?
No-Diodes explicitly marks AP7370 as "NOT RECOMMENDED FOR NEW DESIGN" in its datasheet, citing migration to the improved AP7375 series. However, AP7370-50W5-7 remains fully supported for existing production, with guaranteed supply continuity and full documentation through Aetrix Electronics' lifecycle management program.
What is the minimum input voltage required for regulation at 5.0V output?
The AP7370-50W5-7 requires VIN ≥ 5.45V to maintain regulation at 100mA load (based on max 550mV dropout), and VIN ≥ 5.5V at 300mA per typical curves. Absolute minimum VIN is 3.2V, but regulation only begins once VIN exceeds VOUT + VDROP across the specified load and temperature range.
Can AP7370-50W5-7 drive a 300mA load continuously?
Yes-it is rated for 300mA continuous output under proper thermal conditions: θJA = 155°C/W for SOT25, requiring ≤25°C ambient with 1cm² 2oz copper pour to stay below 125°C junction temperature. Derating is required above 85°C ambient or with limited PCB copper area.
Does AP7370-50W5-7 require an external enable signal?
No-the AP7370-50W5-7 has no enable pin and operates continuously when VIN is applied within specification. It lacks active shutdown control; power sequencing is managed solely by input voltage presence. For on/off control, an external FET switch on VIN is required.
AP7370-50W5-7 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):
- 18V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.55V @ 100mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 2.5 µA
- Current - Supply (Max):
- 300 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Reverse Current, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7370-50W5-7 FAQ
1.How can I place an order for AP7370-50W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7370-50W5-7 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 AP7370-50W5-7 reliable?
The price and inventory of AP7370-50W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7370-50W5-7 is usually 5 days.
3.What payment methods are accepted for AP7370-50W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7370-50W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7370-50W5-7?
AP7370-50W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7370-50W5-7 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 AP7370-50W5-7?
For technical support, including AP7370-50W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7370-50W5-7 requirements.
6.How does Aetrix verify that AP7370-50W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7370-50W5-7 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 AP7370-50W5-7 meets industry standards.
7.What is the process for return or replacement of AP7370-50W5-7?
All AP7370-50W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7370-50W5-7, 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 AP7370-50W5-7 part is unused and in its original packaging.
Return procedure for AP7370-50W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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