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Diodes Incorporated PAM3110ABA150R
- Part No.:
- PAM3110ABA150R
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
PAM3110ABA150R.pdf
- Description:
- IC REG LINEAR 1.5V 1.5A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:2,408
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Product details
Overview
PAM3110ABA150R from Diodes Incorporated is a 1.5A, 1.5V fixed-output CMOS low-dropout (LDO) regulator in SOT-223 package, featuring 400mV dropout at full load, ±1.5% output accuracy, and stable operation with ≥4.7µF ceramic output capacitor. It delivers regulated power to FPGA core rails and microprocessor I/O supplies in space-constrained portable electronics.
For engineers reviewing the PAM3110ABA150R datasheet, PAM3110ABA150R pinout, PAM3110ABA150R application, or PAM3110ABA150R equivalent, key selection criteria include dropout voltage under 1.5A load, thermal performance in SOT-223, quiescent current below 150µA, and compatibility with ceramic capacitors without external compensation.
Technical Context
The PAM3110ABA150R integrates a PMOS pass transistor enabling ultra-low dropout (400mV @ 1.5A) and eliminates body-diode conduction during reverse-voltage conditions. Its internal bandgap reference and error amplifier deliver 1.5V output with 40ppm/°C temperature coefficient and ±1.5% initial accuracy.
It features active-high enable (EN), open-drain Power Good (POK) output referenced to 0.8V threshold, and overtemperature shutdown at 160°C with 30°C hysteresis. Protection includes foldback current limiting (2A typical) and short-circuit current limit of 500mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1.5% - ensures stable core supply for 1.5V FPGA I/O banks without external feedback resistors. |
| Dropout Voltage | 400mV @ 1.5A - enables operation from 1.9V input, supporting single-cell Li-ion or buck-boost pre-regulator outputs. |
| Quiescent Current | 75–150µA - minimizes standby power loss in always-on subsystems such as real-time clocks or sensor interfaces. |
| Thermal Shutdown | 160°C trip with 30°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| PSRR | 55dB @ 100Hz - suppresses low-frequency ripple from upstream switching regulators in post-regulation applications. |
| Stability | Guaranteed with ≥4.7µF ceramic output capacitor - eliminates need for tantalum or electrolytic capacitors, reducing BOM cost and footprint. |
| Input Voltage Range | 2.5V to 5.5V - supports wide-input systems including USB-powered devices and multi-rail industrial controllers. |
Pinout & Package
SOT-223 package with exposed thermal pad (Pin 4) requiring direct solder connection to PCB ground plane for thermal management; θJA = 160°C/W, θJC = 7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Supply Input | Accepts 2.5–5.5V input; requires ≥4.7µF ceramic bypass capacitor placed adjacent to pin for stability. |
| GND (Pin 2) | Ground Reference | Primary signal and power return; must be connected to large copper pour tied to exposed thermal pad (Pin 4). |
| VOUT (Pin 3) | Regulated Output | Delivers 1.5V ±1.5% at up to 1.5A; output capacitance ≥4.7µF ceramic required for loop stability. |
| Exposed Pad (Pin 4) | Thermal & Electrical Ground | Must be soldered to ≥1cm² PCB ground copper area to achieve rated 1.5A continuous current and prevent thermal shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Operation | 400mV @ 1.5A enables use with tight input–output margins, critical for battery-powered 1.5V logic rails. |
| Power Good Indicator | Open-drain POK output asserts low when VOUT drops <5% of nominal - provides system-level reset signaling without external comparator. |
| Thermal Protection | Auto-recovery shutdown at 160°C with 30°C hysteresis - maintains safe junction temperature during transient overloads without latch-up. |
| Ceramic Capacitor Stability | No ESR requirements; works with standard X5R/X7R MLCCs - reduces component count and improves reliability vs. tantalum alternatives. |
| Enable Control | Active-high EN pin allows precise sequencing control in multi-rail systems, with <1µA leakage in disable state. |
Applications
| Mobile FPGA I/O Supply | SATA 1.5V Auxiliary Rail |
|---|---|
|
Use Scenario: Powering I/O banks of Xilinx Artix-7 or Intel Cyclone V FPGAs in handheld test equipment. IC Role / Device Role / Timing Role: Primary 1.5V LDO post-regulator delivering clean, low-noise supply independent of main SMPS rail. Use Value: 400mV dropout allows operation from 1.9V intermediate rail, extending battery life while maintaining 1.5V timing margin. |
Use Scenario: Providing auxiliary 1.5V bias for SATA PHY termination and serializer/deserializer circuits. IC Role / Device Role / Timing Role: Low-ripple, fast-transient LDO ensuring stable reference for high-speed differential signaling. Use Value: 55dB PSRR at 100Hz suppresses switching noise from nearby 5V buck converter, preventing bit errors in 6Gbps links. |
| LCD Monitor Logic Core | Wireless SoC Subsystem |
|
Use Scenario: Supplying 1.5V core voltage to ARM Cortex-A53-based display controller ICs in commercial LCD monitors. IC Role / Device Role / Timing Role: Standalone LDO replacing inefficient linear stage after wide-input DC/DC converter. Use Value: 150µA quiescent current minimizes no-signal standby loss, meeting Energy Star Tier 2 requirements. |
Use Scenario: Regulating 1.5V for Bluetooth 5.0 baseband processor and RF transceiver analog blocks in compact IoT modules. IC Role / Device Role / Timing Role: Compact, thermally robust LDO enabling high-density layout with minimal thermal vias. Use Value: SOT-223 exposed pad + 7°C/W θJC allows 1.5A continuous delivery in 10mm² board area without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2132AK-15Z | 1.5A, 1.5V fixed, 300mV dropout @ 1.5A, 50µA IQ, SOT-23-5 package | Lower thermal capability (θJA = 220°C/W); limited to ≤800mA continuous in same PCB area | Select for ultra-low IQ and smaller footprint where full 1.5A load is intermittent. |
| AP7173-15W5-7 | 2A, 1.5V fixed, 220mV dropout @ 2A, 60µA IQ, WDFN-6 package with wettable flanks | Higher current rating and lower dropout; requires rework-compatible PCB layout for optical solder inspection | Select for next-gen designs needing higher margin, improved thermal performance (θJA = 60°C/W), and AEC-Q200 readiness. |
Compared with AP2132AK-15Z, PAM3110ABA150R offers superior thermal dissipation in SOT-223 for sustained 1.5A loads; versus AP7173-15W5-7, it trades lower dropout and modern packaging for legacy-compatibility and broader distributor availability.
Availability
PAM3110ABA150R is available at Aetrix Electronics and suitable for FPGA power supplies, SATA auxiliary rails, LCD monitor logic cores, and wireless SoC subsystems requiring stable component supply across industrial temperature range (−40°C to +85°C).
Supply support for PAM3110ABA150R 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 power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The PAM3110 belongs to Diodes' high-current LDO family designed specifically for post-regulation in multi-rail systems and low-voltage core supplies where dropout, thermal performance, and ceramic capacitor compatibility are critical.
FAQ
What is the minimum output capacitance required for stability?
The PAM3110ABA150R requires a minimum 4.7µF ceramic capacitor (X5R/X7R) between VOUT and GND for guaranteed stability across all operating conditions. Lower values may cause oscillation or poor transient response, especially under 1.5A load steps.
Does the PAM3110ABA150R support adjustable output voltage?
No - the PAM3110ABA150R is a fixed 1.5V output device. The "ABA" suffix indicates SOT-223 package with factory-trimmed 1.5V output; adjustable versions (e.g., PAM3110 with ADJ pin) use different part numbering and pinout.
How does the Power Good (POK) pin function?
The POK pin is an open-drain output that pulls low when VOUT falls below 95% of nominal (1.425V). It remains low until VOUT recovers above 1.425V and stays high for ≥100µs, providing glitch-free reset signaling to microcontrollers or FPGAs.
Can the PAM3110ABA150R be used without the exposed thermal pad connected?
No - the exposed pad (Pin 4) must be soldered to a dedicated PCB ground plane. Without this connection, thermal resistance rises sharply, causing premature thermal shutdown at ≤500mA load and violating absolute maximum junction temperature limits.
PAM3110ABA150R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- 55dB ~ 35dB (100Hz ~ 10kHz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223-3
PAM3110ABA150R FAQ
1.How can I place an order for PAM3110ABA150R through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM3110ABA150R 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 PAM3110ABA150R reliable?
The price and inventory of PAM3110ABA150R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM3110ABA150R is usually 5 days.
3.What payment methods are accepted for PAM3110ABA150R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM3110ABA150R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM3110ABA150R?
PAM3110ABA150R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM3110ABA150R 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 PAM3110ABA150R?
For technical support, including PAM3110ABA150R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM3110ABA150R requirements.
6.How does Aetrix verify that PAM3110ABA150R is sourced from the original manufacturer or authorized distributors?
All PAM3110ABA150R 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 PAM3110ABA150R meets industry standards.
7.What is the process for return or replacement of PAM3110ABA150R?
All PAM3110ABA150R units undergo pre-shipment inspection (PSI). If there is an issue with PAM3110ABA150R, 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 PAM3110ABA150R part is unused and in its original packaging.
Return procedure for PAM3110ABA150R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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