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Diodes Incorporated AP7383-44Y-13
- Part No.:
- AP7383-44Y-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP7383-44Y-13.pdf
- Description:
- IC REG LIN 4.4V SOT89 T&R 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:4,136
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Product details
Overview
AP7383-44Y-13 from Diodes Incorporated is a fixed-output 4.4V, 150mA ultra-low dropout (ULDO) linear regulator in SOT89 package, featuring 30V max input voltage, 500mV dropout at 50mA, ±1% output accuracy, and thermal shutdown. It delivers stable power to USB peripherals, portable instrumentation, and battery-powered microcontroller subsystems with minimal quiescent current (1.8–3.0µA).
For engineers reviewing the AP7383-44Y-13 datasheet, AP7383-44Y-13 pinout, AP7383-44Y-13 application, or AP7383-44Y-13 equivalent, key selection criteria include wide-input capability (3.5–30V), low-noise regulation for sensitive analog circuitry, EN-controlled sequencing, and compatibility with 1µF ceramic output capacitors in space-constrained designs.
Technical Context
The AP7383-44Y-13 integrates an error amplifier, precision voltage reference, and current-limit protection circuit within a monolithic silicon die. Its internal resistor network sets the fixed 4.4V output without external feedback components.
It employs thermal shutdown at +160°C with +20°C hysteresis and supports enable-controlled operation via a dedicated EN pin (2.0V logic-high threshold), allowing system-level power sequencing and standby mode activation with 0.01µA standby current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.4V ±1% - eliminates need for external resistive divider and ensures stable rail for 4.3–4.5V logic or analog ICs. |
| Input Voltage Range | 3.5V to 30V - supports direct connection to unregulated 12V/24V rails or multi-cell Li-ion batteries without pre-regulation. |
| Dropout Voltage | 500mV @ 50mA - enables >3.9V output from 4.4V input, critical for maintaining regulation under load during battery discharge. |
| Quiescent Current | 1.8–3.0µA - minimizes standby power loss in always-on sensor nodes or real-time clock circuits. |
| Line Regulation | 0.05%/V - maintains <±0.15mV/V output variation across full input range, reducing need for post-regulation filtering. |
| Load Regulation | 0.5% - holds output within ±22mV over 1–150mA load swing, suitable for mixed-signal SoC power domains. |
| Thermal Shutdown | +160°C with +20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
SOT89 (Y package) is a 3-pin, surface-mount, thermally enhanced plastic package with exposed tab for improved heat dissipation (θJA = 118°C/W on JEDEC High-K board). Pin 1 = VIN, Pin 2 = GND, Pin 3 = VOUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts up to 30V DC; requires local 1µF ceramic decoupling capacitor. |
| 2 | GND | Analog/digital ground reference; must be connected to low-impedance PCB ground plane for stability and thermal performance. |
| 3 | VOUT | Regulated 4.4V output; drives load directly; requires 1µF ceramic output capacitor for loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Input Range (3.5–30V) | Enables single-regulator solution across automotive, industrial, and multi-battery platforms without input pre-scaling. |
| Ultra-Low Quiescent Current (1.8–3.0µA) | Extends battery life in coin-cell or energy-harvesting applications where standby current dominates total consumption. |
| EN Control Input | Allows precise power-up/down sequencing of downstream ICs and reduces system-level leakage to 0.01µA in OFF state. |
| Ceramic Capacitor Compatible | Eliminates need for costly tantalum or aluminum electrolytic capacitors, reducing BOM cost and board area. |
| Thermal Shutdown with Hysteresis | Prevents thermal runaway during short-circuit events while avoiding oscillation near trip point due to +20°C hysteresis. |
Applications
| USB-Powered Test Equipment | Portable Medical Sensors |
|---|---|
Use Scenario: Handheld multimeter or oscilloscope probe powered via USB 5V bus with internal 4.4V rail for ADC reference and op-amp biasing. IC Role / Device Role / Timing Role: Primary LDO providing clean, low-noise 4.4V supply to precision analog front-end and microcontroller core. Use Value: 0.05%/V line regulation and ±1% accuracy ensure measurement repeatability across varying USB source voltage (4.75–5.25V). | Use Scenario: Wearable ECG patch using single LiPo cell (3.0–4.2V) with boost converter feeding AP7383-44Y-13 to generate stable 4.4V for signal chain. IC Role / Device Role / Timing Role: Post-regulator delivering low-ripple, thermally robust 4.4V to analog sensor interface and BLE radio MCU. Use Value: 500mV dropout at 50mA allows full 4.4V output even as battery discharges below 4.9V, extending usable runtime. |
| Industrial Data Loggers | Smart Meter Auxiliary Power |
Use Scenario: Battery-backed environmental logger operating from 3.6V primary lithium thionyl chloride cell with optional 12V backup input. IC Role / Device Role / Timing Role: Dual-input LDO accepting either battery or auxiliary 12V, regulating to 4.4V for RTC, memory, and sensor interface. Use Value: 30V absolute max input rating and thermal shutdown protect against accidental 24V field wiring errors. | Use Scenario: Electricity meter with isolated 12V auxiliary supply powering metrology ASIC requiring tightly regulated 4.4V reference rail. IC Role / Device Role / Timing Role: Isolated-side LDO generating noise-immune 4.4V for high-precision ADC and voltage reference blocks. Use Value: Low ground current (≤3.0µA) minimizes burden on isolation transformer or DC-DC converter, improving overall system efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361-44Y-13 | Same 4.4V output but 300mA rated; higher dropout (600mV @ 50mA); no EN pin. | Lacks enable control; suited for higher-current loads where sequencing is not required. | Select when load exceeds 150mA and EN functionality is unnecessary. |
| MCP1703T-4402E/MB | 4.4V output, 250mA; 600mV dropout @ 250mA; 2.5µA quiescent current; no thermal shutdown. | No built-in thermal protection; requires external thermal management in high-power-density layouts. | Choose only if thermal margin is guaranteed and 150mA limit is sufficient. |
Compared with AP7361-44Y-13 and MCP1703T-4402E/MB, the AP7383-44Y-13 uniquely balances 150mA capability, EN control, thermal shutdown, and ultra-low IQ-making it optimal for compact, safety-aware, battery-sensitive systems where both sequencing and fault resilience are mandatory.
Availability
AP7383-44Y-13 is available at Aetrix Electronics and suitable for USB-powered instrumentation, portable medical sensors, and industrial data loggers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AP7383-44Y-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 ICs, with manufacturing certified to IATF 16949 and product compliance to AEC-Q standards.
The AP7383 series belongs to Diodes' high-voltage ULDO regulator product line, designed specifically for battery-powered and wide-input industrial applications demanding low IQ, high accuracy, and robust thermal protection.
FAQ
What is the minimum input voltage required for regulation at 4.4V output?
The AP7383-44Y-13 requires a minimum input voltage of 3.5V to maintain regulation. At 50mA load, its dropout is 500mV, so VIN must be ≥4.9V to sustain full 4.4V output. Below that, output drops linearly per the dropout curve shown in the datasheet Figure 6.
Does the AP7383-44Y-13 require an external capacitor on the EN pin?
No external capacitor is required on the EN pin. The EN input has internal hysteresis and draws only 1µA typical current. A simple pull-up resistor to VIN or microcontroller GPIO is sufficient for reliable enable/disable control; adding capacitance may slow response and is not recommended unless intentional debouncing is needed.
Can the AP7383-44Y-13 be used with input voltages above 24V?
Yes-the AP7383-44Y-13 supports input voltages up to 30V continuously (absolute maximum rating is 33V). However, power dissipation must be calculated: at VIN = 28V and IOUT = 150mA, PD ≈ (28V − 4.4V) × 0.15A = 3.54W, exceeding the SOT89's 847mW rating. Derating or heatsinking is mandatory above ~12V at full load.
Is the SOT89 package lead-free and RoHS compliant?
Yes-the AP7383-44Y-13 SOT89 package is fully RoHS 3 compliant (2015/863/EU), lead-free, halogen-free, and antimony-free per Diodes' "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb), with matte tin-plated leads solderable per MIL-STD-202 Method 208.
AP7383-44Y-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):
- 30V
- Voltage - Output (Min/Fixed):
- 4.4V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 3 µA
- Current - Supply (Max):
- 3 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Current Limit, Thermal Shutdown
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP7383-44Y-13 FAQ
1.How can I place an order for AP7383-44Y-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7383-44Y-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 AP7383-44Y-13 reliable?
The price and inventory of AP7383-44Y-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7383-44Y-13 is usually 5 days.
3.What payment methods are accepted for AP7383-44Y-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7383-44Y-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7383-44Y-13?
AP7383-44Y-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7383-44Y-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 AP7383-44Y-13?
For technical support, including AP7383-44Y-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7383-44Y-13 requirements.
6.How does Aetrix verify that AP7383-44Y-13 is sourced from the original manufacturer or authorized distributors?
All AP7383-44Y-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 AP7383-44Y-13 meets industry standards.
7.What is the process for return or replacement of AP7383-44Y-13?
All AP7383-44Y-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7383-44Y-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 AP7383-44Y-13 part is unused and in its original packaging.
Return procedure for AP7383-44Y-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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