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Diodes Incorporated AP7375-30Y-13
- Part No.:
- AP7375-30Y-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP7375-30Y-13.pdf
- Description:
- IC REG LIN 3V 300MA SOT89
- Quantity:
- Payment:
- Shipping:
Inventory:1,038
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Product details
Overview
AP7375-30Y-13 from Diodes Incorporated is a 3.0V fixed-output, wide-input (3–45V), 300mA ultra-low-dropout linear regulator in SOT89 package, featuring 2.1μA quiescent current, 35mV dropout at 10mA, and integrated enable (EN) pin rated to 45V - designed for battery-powered smoke detectors requiring stable low-power 3.0V rail under wide VIN variation.
For engineers reviewing the AP7375-30Y-13 datasheet, AP7375-30Y-13 pinout, AP7375-30Y-13 application, or AP7375-30Y-13 equivalent, key selection criteria include input voltage range up to 45V, EN pin voltage tolerance, thermal shutdown threshold (+150°C), PSRR (85dB @ 1kHz), and SOT89 package thermal resistance (95°C/W).
Technical Context
The AP7375-30Y-13 implements a PMOS pass transistor architecture enabling ultra-low dropout (35mV @ 10mA) and fast transient response without output overshoot during startup or short-circuit recovery. Its EN pin accepts up to 45V directly, eliminating external level-shifting circuitry in high-VIN systems.
It integrates thermal shutdown (trip at +150°C, hysteresis +20°C) and current limiting (~500mA), with internal protection logic ensuring safe operation under overload, short-circuit, and thermal stress - all while maintaining ±2% output voltage accuracy across load, line, and temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2% - ensures stable MCU core or sensor bias rail without external feedback network. |
| Input Voltage Range | 3.0V to 45V - supports direct connection to automotive batteries, industrial 24V/36V rails, or multi-cell Li-ion packs. |
| Max Output Current | 300mA continuous - sufficient for microcontrollers, analog sensors, and low-power wireless transceivers. |
| Quiescent Current | 2.1μA typical - enables >10-year battery life in always-on smoke detectors with 200mAh coin cells. |
| Dropout Voltage | 35mV @ 10mA / 350mV @ 100mA - maintains regulation down to VIN = VOUT + 0.35V at full load, critical for end-of-battery operation. |
| PSRR | 85dB @ 1kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Thermal Shutdown | +150°C trip with +20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Enable Pin Voltage | 0.4V (max) logic-low disable / no upper limit - accepts direct connection to 45V supply or microcontroller GPIO without resistor divider. |
Pinout & Package
SOT89 package (Package Code: Y) with exposed pad (EP) for enhanced thermal dissipation; θJA = 95°C/W on JEDEC-standard board. Recommended PCB layout uses large copper area connected to EP and GND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input voltage supply | Accepts 3–45V; connects to bulk input capacitor (1μF ceramic) placed adjacent to pin. |
| 2 (GND) | Ground reference | Primary return path; must connect to low-impedance ground plane to minimize noise and improve stability. |
| 3 (VOUT) | Regulated output | Delivers 3.0V ±2%; requires 10μF ceramic output capacitor placed within 2mm of pin for transient response. |
| EP (Exposed Pad) | Thermal interface | Not electrically functional; soldered to large GND copper pour to reduce θJA by ~20°C/W in production layouts. |
Key Features
| Feature | Design Value |
|---|---|
| 45V-tolerant EN pin | Eliminates need for external voltage divider or level shifter when enabling from high-side 24V/42V rails. |
| No-startup overshoot | Ensures clean power-up for sensitive ADCs or RF modules without external soft-start circuitry. |
| Integrated short-circuit protection | Limits output current to ~500mA and auto-recovers after fault removal - no latch-up or manual reset required. |
| High PSRR at 1kHz | 85dB attenuation of ripple from upstream switching regulators, reducing need for additional filtering stages. |
| ±2% output accuracy | Guarantees consistent 3.0V supply across -40°C to +85°C ambient, critical for precision sensor biasing. |
Applications
| Smoke Detector Power Supply | Industrial Sensor Node |
|---|---|
|
Use Scenario: Standalone battery-powered optical smoke alarm with 3.0V MCU, IR LED driver, and analog smoke chamber signal conditioning. IC Role / Device Role / Timing Role: Primary 3.0V LDO supplying MCU core, analog front-end, and wake-up timer - operates continuously from 3.6V–42V battery stack. Use Value: 2.1μA IQ extends 200mAh CR123A battery life beyond 10 years in sleep mode; 45V EN pin allows direct battery monitoring without extra components. |
Use Scenario: Wireless temperature/humidity sensor node powered by 3.6V Li-SOCl₂ battery, transmitting via sub-GHz RF IC. IC Role / Device Role / Timing Role: Regulates 3.0V rail for RF transceiver and precision ADC - handles 40V load-dump transients on shared 24V field bus input. Use Value: 45V input rating and fast line transient response (<1ms settling) prevent RF lockup during bus voltage spikes; ±2% accuracy ensures calibrated sensor readings. |
| Home Appliance Control Board | Microcontroller Power Domain |
|
Use Scenario: Washing machine main control board deriving 3.0V for touch controller, EEPROM, and real-time clock from noisy 12V DC bus. IC Role / Device Role / Timing Role: Low-noise post-regulator decoupling switching supply ripple before it reaches timing-critical peripherals. Use Value: 85dB PSRR at 1kHz attenuates 12V buck converter ripple, eliminating audible noise in audio subsystems and jitter in RTC clocks. |
Use Scenario: Industrial PLC module using ARM Cortex-M4 MCU requiring clean 3.0V core voltage from variable 5–36V input. IC Role / Device Role / Timing Role: Core LDO for MCU VDDCORE, enabled only during active processing cycles via GPIO-controlled EN pin. Use Value: 45V-rated EN pin allows direct connection to 24V system rail for enable control - no level-shifter needed, simplifying BOM and layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-IQ, wide-input LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7B8733QKVURQ1 | Automotive-grade AEC-Q100, 350mA, 2.5μA IQ, 40V max VIN, fixed 3.3V only | Requires external resistor divider for 3.0V use; lacks 45V EN pin - needs level shift for high-side enable | Choose for automotive environments requiring qualification; avoid if 3.0V exact output or 45V EN is mandatory. |
| MCP1826-3002E/DB | 300mA, 12μA IQ, 16V max VIN, fixed 3.0V, no high-voltage EN pin | Cannot support >16V inputs or direct 24V/42V enable - requires external MOSFET or voltage translator | Acceptable only in low-VIN (<16V), non-battery-critical applications where IQ >2μA is tolerable. |
Compared with TPS7B8733QKVURQ1 and MCP1826-3002E/DB, the AP7375-30Y-13 uniquely combines 45V EN pin tolerance, 2.1μA IQ, and exact 3.0V output in SOT89 - making it optimal for cost-sensitive, long-life, wide-input industrial and safety equipment where external enable circuitry must be minimized.
Availability
AP7375-30Y-13 is available at Aetrix Electronics and suitable for battery-powered equipment, smoke detectors and sensors, microcontroller applications, and home appliances requiring stable component supply with extended lifecycle support.
Supply support for AP7375-30Y-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 analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, automotive, and consumer markets.
The AP7375 series belongs to Diodes' ultra-low-IQ LDO product line, engineered specifically for energy-constrained, wide-input applications such as battery-backed safety systems and industrial IoT edge nodes where input voltage can vary from 3V to 45V.
FAQ
What is the maximum allowable input voltage for AP7375-30Y-13?
The absolute maximum input voltage is 55V, but the recommended operating range is 3.0V to 45V per the datasheet. Operation above 45V risks exceeding thermal limits and degrading long-term reliability, even if within absolute ratings. The 45V upper limit ensures safe junction temperature under worst-case load and ambient conditions.
Can the EN pin be driven directly from a 24V microcontroller I/O?
Yes - the EN pin accepts voltages up to 45V and has no upper limit for logic-high enable. It draws <100nA, so a 24V GPIO (or even unregulated 24V rail) can drive it directly without resistive dividers or level shifters, simplifying design and improving system-level reliability.
Does AP7375-30Y-13 require an external output capacitor, and what type is recommended?
Yes - a minimum 1μF ceramic capacitor is required for stability, with 10μF recommended for optimal load transient response. X7R or X5R dielectrics are specified; the capacitor must be placed within 2mm of VOUT and GND pins. Larger values (e.g., 22μF) further reduce undershoot during step-load changes.
How does thermal shutdown behave during sustained overload?
When junction temperature reaches +150°C, the device shuts down the pass transistor and holds VOUT at 0V until temperature drops by ≥20°C (hysteresis). Recovery is automatic and does not require cycling EN - this protects against thermal runaway during prolonged short-circuit or high-ambient conditions without external intervention.
AP7375-30Y-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- AP7375
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.36V @ 100mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 5 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP7375-30Y-13 FAQ
1.How can I place an order for AP7375-30Y-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7375-30Y-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 AP7375-30Y-13 reliable?
The price and inventory of AP7375-30Y-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7375-30Y-13 is usually 5 days.
3.What payment methods are accepted for AP7375-30Y-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7375-30Y-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7375-30Y-13?
AP7375-30Y-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7375-30Y-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 AP7375-30Y-13?
For technical support, including AP7375-30Y-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7375-30Y-13 requirements.
6.How does Aetrix verify that AP7375-30Y-13 is sourced from the original manufacturer or authorized distributors?
All AP7375-30Y-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 AP7375-30Y-13 meets industry standards.
7.What is the process for return or replacement of AP7375-30Y-13?
All AP7375-30Y-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7375-30Y-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 AP7375-30Y-13 part is unused and in its original packaging.
Return procedure for AP7375-30Y-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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