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Diodes Incorporated AP7370-30Y-13
- Part No.:
- AP7370-30Y-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP7370-30Y-13.pdf
- Description:
- IC REG LINEAR 3V 300MA SOT89-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,918
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Product details
Overview
AP7370-30Y-13 from Diodes Incorporated is a fixed 3.0V, 300mA ultra-low dropout (ULDO) linear regulator in SOT89 package. It delivers ±1% output voltage accuracy over load/line/temperature, supports 3.2–18V input range, features 500mV dropout at 100mA, and includes reverse current protection, thermal shutdown, and short-circuit protection - enabling stable power for portable instrumentation and battery-powered metering systems.
For engineers reviewing the AP7370-30Y-13 datasheet, AP7370-30Y-13 pinout, AP7370-30Y-13 application, or AP7370-30Y-13 equivalent, key selection criteria include its 3.0V fixed output, 18V max input, 500mV dropout at rated load, ±1% accuracy, and SOT89 thermal performance (θJA = 126°C/W).
Technical Context
The AP7370-30Y-13 integrates a precision voltage reference, error amplifier, resistor network for fixed 3.0V output, current-limit circuit (350mA min), and chip-enable logic. Its architecture enables stable regulation with low-ESR ceramic capacitors and eliminates reverse current flow during shutdown or input collapse.
It operates across –40°C to +125°C junction temperature, maintains ≤0.5% load regulation (1mA–300mA), achieves 0.05%/V line regulation, and activates thermal shutdown at +160°C with +20°C hysteresis - ensuring robustness in thermally constrained portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% (ensures stable MCU core or sensor bias without external feedback) |
| Input Voltage Range | 3.2V to 18V (supports wide-input battery stacks, USB PD adapters, and industrial 12V rails) |
| Max Output Current | 300mA continuous (sufficient for microcontrollers, ADCs, and small displays) |
| Dropout Voltage | 500mV @ 100mA (enables regulation down to VIN = 3.5V for 3.0V output) |
| Quiescent Current | 1.5–2.5µA (minimizes standby power loss in battery-operated devices) |
| Thermal Shutdown | Triggers at +160°C with +20°C hysteresis (prevents latch-up during sustained overload) |
| Reverse Current Protection | Active (blocks >1µA reverse current when VOUT > VIN, protecting upstream sources) |
Pinout & Package
SOT89 package: 3-pin, single-sided heat sink tab (EP connected to GND), 4.5mm × 2.5mm footprint, θJA = 126°C/W, RoHS-compliant, halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input voltage supply | Accepts 3.2–18V; requires ≥1µF ceramic input capacitor for stability |
| 2 (GND) | Ground reference and thermal pad | Primary return path; EP must be soldered to PCB ground plane for thermal performance |
| 3 (VOUT) | Regulated 3.0V output | Delivers up to 300mA; requires ≥1µF ceramic output capacitor for transient response |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range (up to 18V) | Enables direct connection to unregulated 12V or multi-cell Li-ion sources without pre-regulation |
| Ultra-low quiescent current (1.5–2.5µA) | Extends battery life in always-on metering and weighing scale applications |
| ±1% output voltage accuracy | Meets tight tolerance requirements of precision analog sensors and 3.0V I/O interfaces |
| Low-ESR ceramic capacitor compatibility | Eliminates need for costly tantalum or aluminum electrolytic capacitors |
| Integrated reverse current protection | Prevents backfeed into input rail during hot-swap or battery removal scenarios |
Applications
| Portable Weighing Scales | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Compact handheld scales using strain-gauge bridges and 24-bit sigma-delta ADCs. IC Role / Device Role / Timing Role: Primary 3.0V supply for ADC reference, microcontroller core, and display driver. Use Value: ±1% accuracy ensures <0.05% full-scale measurement error; 500mV dropout allows operation down to 3.5V battery voltage. |
Use Scenario: Field-deployable environmental monitors with LoRaWAN radios and temperature/humidity sensors. IC Role / Device Role / Timing Role: Low-noise 3.0V rail for RF transceiver and precision analog front-end. Use Value: 1.5µA quiescent current extends 2xAA alkaline battery life to >2 years in sleep mode. |
| Industrial Panel Meters | USB-Powered Test Instruments |
|
Use Scenario: DIN-rail mounted meters measuring current/voltage with isolated RS-485 communication. IC Role / Device Role / Timing Role: Post-isolation 3.0V supply for microcontroller and digital isolator side. Use Value: 18V input rating accommodates 24V industrial bus with minimal derating; thermal shutdown prevents failure under ambient >85°C. |
Use Scenario: Portable oscilloscope probes and multimeter accessories powered via USB-C (5V/9V/15V). IC Role / Device Role / Timing Role: Input-flexible 3.0V regulator replacing LDOs requiring ≥4.5V input. Use Value: Operates directly from USB-C 5V or 9V without buck converter, reducing BOM count and EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3.0V ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7375-30Y-13 | Successor device with improved PSRR (60dB @ 1kHz vs 45dB), lower dropout (400mV @ 100mA), and same SOT89 package | Recommended for new designs requiring higher noise immunity in sensitive analog circuits | Select AP7375-30Y-13 for new designs; AP7370-30Y-13 is NOT RECOMMENDED FOR NEW DESIGN per Diodes datasheet |
| MCP1703T-3002E/MB | Microchip 3.0V LDO in SOT89; 600mV dropout @ 250mA, ±2% accuracy, no reverse current protection | Lacks reverse current blocking and tighter accuracy; suitable only where input cannot exceed VOUT | Use only if reverse current risk is eliminated externally; inferior accuracy and dropout vs AP7370-30Y-13 |
Compared with AP7370-30Y-13, AP7375-30Y-13 offers lower dropout and better PSRR for noise-sensitive analog loads, while MCP1703T-3002E/MB lacks reverse current protection and has looser accuracy - making it unsuitable for battery-backed or hot-swap applications.
Availability
AP7370-30Y-13 is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered metering, and industrial panel meters requiring stable component supply with known end-of-life planning.
Supply support for AP7370-30Y-13 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 ICs, specializing in high-performance power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The AP7370 series belongs to Diodes' wide-input ULDO regulator product line, designed specifically for space-constrained, battery-powered, and wide-vin instrumentation applications where reverse current blocking and ultra-low IQ are critical.
FAQ
What is the maximum input voltage for AP7370-30Y-13?
The absolute maximum input voltage is 20V, but the recommended operating range is 3.2V to 18V. Operation above 18V risks exceeding safe junction temperature or violating SOA limits, especially at high ambient temperatures or full load. Derating is required beyond 15V at >85°C ambient.
Does AP7370-30Y-13 require an external enable signal?
No - the AP7370-30Y-13 has no enable pin and operates continuously when VIN is within specification. It lacks active shutdown control; power-down is achieved only by removing input voltage. For controlled sequencing, an external MOSFET switch on VIN is required.
Can AP7370-30Y-13 be used with 2.2µF ceramic output capacitors?
Yes - the device is explicitly characterized and stable with low-ESR ceramic capacitors ≥1.0µF. A 2.2µF X5R/X7R capacitor improves load transient response and reduces output ripple, especially under dynamic current steps up to 300mA.
Why is AP7370-30Y-13 marked "NOT RECOMMENDED FOR NEW DESIGN"?
Diodes issued this status because the AP7375-30Y-13 is its direct, enhanced successor - offering lower dropout (400mV vs 500mV), improved PSRR, and identical pinout/package. The AP7370 remains fully functional and supported for existing designs, but new projects should use AP7375.
AP7370-30Y-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 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-89-3
AP7370-30Y-13 FAQ
1.How can I place an order for AP7370-30Y-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7370-30Y-13 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 AP7370-30Y-13 reliable?
The price and inventory of AP7370-30Y-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7370-30Y-13 is usually 5 days.
3.What payment methods are accepted for AP7370-30Y-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7370-30Y-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7370-30Y-13?
AP7370-30Y-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7370-30Y-13 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 AP7370-30Y-13?
For technical support, including AP7370-30Y-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7370-30Y-13 requirements.
6.How does Aetrix verify that AP7370-30Y-13 is sourced from the original manufacturer or authorized distributors?
All AP7370-30Y-13 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 AP7370-30Y-13 meets industry standards.
7.What is the process for return or replacement of AP7370-30Y-13?
All AP7370-30Y-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7370-30Y-13, 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 AP7370-30Y-13 part is unused and in its original packaging.
Return procedure for AP7370-30Y-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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