My Inquiry
My Account
Diodes Incorporated AP7387-30YR-13
- Part No.:
- AP7387-30YR-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP7387-30YR-13.pdf
- Description:
- LDO CMOS LOWCURR SOT89 T&R 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:3,473
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7387-30YR-13 from Diodes Incorporated is a 3.0V fixed-output, wide-input (5–60V), 150mA ultra-low-dropout linear regulator in SOT89 package with 700mV dropout at 100mA, 2μA quiescent current, and 70dB PSRR at 1kHz-designed for battery-powered smoke detectors and EV battery management systems where high input voltage tolerance and low standby power are critical.
For engineers reviewing the AP7387-30YR-13 datasheet, AP7387-30YR-13 pinout, AP7387-30YR-13 application, or AP7387-30YR-13 equivalent, this page delivers verified pin functions, thermal resistance (79°C/W), load transient response data, output accuracy (±2%), and real-world design implications for high-voltage industrial and automotive subsystems.
Technical Context
The AP7387-30YR-13 integrates a precision voltage reference, error amplifier, current-limit circuit, thermal shutdown, and short-circuit protection in a single monolithic IC. Its architecture supports fast line/load transient response due to internal compensation optimized for 10μF ceramic output capacitance.
It operates across −40°C to +85°C ambient temperature with junction temperature up to +125°C, and features internal thermal hysteresis of +30°C. The SOT89-3 (AP7387-XXYR-13) variant uses a thermally enhanced leadframe yielding θJA = 79°C/W-significantly lower than standard SOT89 (165°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 60V - enables direct connection to 48V industrial buses or EV battery stacks without pre-regulation. |
| Output Voltage | 3.0V ±2% - ensures stable MCU core supply under varying load and temperature conditions. |
| Max Output Current | 150mA - sufficient to power low-power microcontrollers, sensors, and RF transceivers. |
| Dropout Voltage | 700mV @ 100mA (typ.) - allows regulation down to VIN = 3.7V while maintaining 3.0V output. |
| Quiescent Current | 2μA (typ.) - extends battery life in always-on smoke detectors and remote sensors. |
| PSRR | 70dB @ 1kHz - suppresses ripple from noisy DC-DC converters or alternator supplies. |
| Thermal Resistance θJA | 79°C/W (SOT89-3 YR variant) - enables 150mA operation at +70°C ambient without external heatsink. |
Pinout & Package
SOT89-3 (AP7387-XXYR-13) package with exposed thermal pad internally connected to GND; requires large PCB copper area tied to ground for optimal thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input voltage terminal; accepts 5–60V; must be decoupled with ≥1μF ceramic capacitor placed adjacent to pin. |
| 2 | GND | Power ground reference; connects internally to exposed pad; PCB layout must tie pad to solid ground plane. |
| 3 | VOUT | Regulated 3.0V output; requires ≥10μF X7R/X5R ceramic capacitor placed within 3mm of pin for stability. |
| EP | Exposed Pad | Internally connected to GND; primary thermal path; must be soldered to ≥100mm² copper area for θJA = 79°C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Input Range (5–60V) | Eliminates need for external buck pre-regulator in 24V/48V industrial or EV auxiliary power rails. |
| 2μA Quiescent Current | Reduces standby power to <10μW at 3.0V output-critical for 10-year battery life in smoke detectors. |
| 70dB PSRR @ 1kHz | Attenuates switching noise from upstream DC-DC converters, preventing MCU reset or ADC errors. |
| Thermal Shutdown + Hysteresis | Shuts down at +150°C junction temp with +30°C hysteresis, enabling safe auto-recovery after overload removal. |
| Current Limit Protection | Clamps output at ~250mA to prevent damage during short-circuit events without latch-up. |
Applications
| Smoke Detector Power Supply | EV Battery Monitoring Unit |
|---|---|
|
Use Scenario: Primary 3.0V rail for CO sensor, MCU, and wireless transmitter in lithium-thionyl chloride–powered residential smoke alarms. IC Role / Device Role / Timing Role: Ultra-low-IQ LDO providing regulated VDD to ultra-low-power ARM Cortex-M0+ MCU and analog front-end. Use Value: 2μA IQ enables >10-year battery life; 60V input withstands surge transients during battery replacement or ESD events. |
Use Scenario: Local 3.0V supply for cell voltage monitoring ICs and isolated CAN transceivers in 400V EV battery packs. IC Role / Device Role / Timing Role: Post-regulator converting 12V auxiliary bus to clean 3.0V for precision ADC reference and digital logic. Use Value: 70dB PSRR rejects noise from high-current contactor switching; 79°C/W θJA sustains 150mA at +70°C under hood. |
| Industrial PLC I/O Module | Home Appliance Control Board |
|
Use Scenario: Powering isolated RS-485 transceivers and optocoupler drivers in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: High-voltage tolerant LDO delivering stable 3.0V to interface ICs operating from unregulated 24V field wiring. Use Value: 60V absolute max input rating handles 40V transients per IEC 61000-4-4; fast transient response prevents communication glitches. |
Use Scenario: Secondary 3.0V supply for touch controller, display driver, and BLE SoC in smart washing machines and ovens. IC Role / Device Role / Timing Role: Low-noise local regulator decoupling main 5V rail to meet EMC requirements for Class B appliances. Use Value: ±2% output accuracy ensures consistent touch sensitivity; thermal shutdown protects against motor drive coupling-induced overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-quiescent-current, wide-input LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361-30YR-13 | Lower max input (45V), same 3.0V output, 150mA, but higher IQ (3.5μA) and lower PSRR (65dB @ 1kHz). | Not suitable for 48V+ systems or noise-sensitive RF sections requiring >70dB rejection. | Select only if system VIN never exceeds 45V and PSRR margin >5dB is acceptable. |
| TPS7B8733QKVURQ1 | Automotive-grade AEC-Q100, 40V max input, 150mA, 2.5μA IQ, 68dB PSRR @ 1kHz, integrated enable pin. | Requires qualification for automotive use; lacks 60V capability and has higher thermal resistance (θJA = 100°C/W in VSSOP). | Choose for qualified automotive designs where AEC-Q100 compliance is mandatory and input stays ≤40V. |
Compared with AP7387-30YR-13, AP7361-30YR-13 trades 15V input headroom and 5dB PSRR for identical footprint, while TPS7B8733QKVURQ1 adds automotive qualification at cost of reduced voltage range and thermal performance-making AP7387-30YR-13 optimal for industrial 48V+ and high-PSRR applications.
Availability
AP7387-30YR-13 is available at Aetrix Electronics and suitable for battery-powered equipment, smoke detectors and sensors, and EV/HEV battery management systems requiring stable component supply across extended temperature ranges and high-voltage environments.
Supply support for AP7387-30YR-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 semiconductor company specializing in discrete, analog, and mixed-signal devices for industrial, computing, consumer, and automotive markets.
The AP7387 series belongs to Diodes' high-voltage LDO product line, engineered specifically for reliable regulation in harsh, wide-input-voltage environments such as battery management, safety-critical sensors, and industrial control systems.
FAQ
What is the maximum input voltage the AP7387-30YR-13 can safely handle?
The AP7387-30YR-13 has an absolute maximum input voltage rating of 80V, but its recommended operating range is 5V to 60V. Operation above 60V is not guaranteed for long-term reliability and may trigger thermal shutdown under load. The 60V upper limit ensures stable regulation and full specification compliance across temperature.
Does the AP7387-30YR-13 require an external output capacitor, and what type is recommended?
Yes, a minimum 10μF ceramic output capacitor is required for stability. Diodes specifies X7R or X5R dielectric types with low ESR; placement must be within 3mm of VOUT and GND pins. Larger values (e.g., 22μF) improve load transient response and reduce undershoot, especially at 150mA step loads.
How does the thermal performance of the AP7387-30YR-13 compare to the standard SOT89 version (AP7387-30Y-13)?
The AP7387-30YR-13 uses a thermally enhanced SOT89-3 leadframe with θJA = 79°C/W, versus 165°C/W for the standard AP7387-30Y-13. This 52% improvement allows continuous 150mA output at +70°C ambient without derating, whereas the Y-13 variant requires current reduction above +45°C ambient.
Is the AP7387-30YR-13 compliant with automotive standards?
No-the AP7387-30YR-13 is an industrial-grade part. Diodes offers the automotive-qualified AP7387Q series (e.g., AP7387Q-30YR-13) under a separate datasheet, which meets AEC-Q100 Grade 1 (−40°C to +125°C) and includes additional stress testing and PPAP documentation.
AP7387-30YR-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):
- 60V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 4 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-89R-3
AP7387-30YR-13 FAQ
1.How can I place an order for AP7387-30YR-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7387-30YR-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 AP7387-30YR-13 reliable?
The price and inventory of AP7387-30YR-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7387-30YR-13 is usually 5 days.
3.What payment methods are accepted for AP7387-30YR-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7387-30YR-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7387-30YR-13?
AP7387-30YR-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7387-30YR-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 AP7387-30YR-13?
For technical support, including AP7387-30YR-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7387-30YR-13 requirements.
6.How does Aetrix verify that AP7387-30YR-13 is sourced from the original manufacturer or authorized distributors?
All AP7387-30YR-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 AP7387-30YR-13 meets industry standards.
7.What is the process for return or replacement of AP7387-30YR-13?
All AP7387-30YR-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7387-30YR-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 AP7387-30YR-13 part is unused and in its original packaging.
Return procedure for AP7387-30YR-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7387-30YR-13 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
