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Diodes Incorporated PAM3116ABLBADJR
- Part No.:
- PAM3116ABLBADJR
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
PAM3116ABLBADJR.pdf
- Description:
- IC REG LINEAR POS ADJ 1.5A 8SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,326
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Product details
Overview
PAM3116ABLBADJR from Diodes Incorporated is a 1.5A adjustable-output CMOS low-dropout (LDO) voltage regulator in SOP-8 package, featuring 300mV dropout at 1.5A (VO ≥ 2.5V), 0.8V reference voltage, ±1.5% output accuracy, and over-temperature shutdown. It delivers stable regulation for FPGA core supplies and post-regulation in switch-mode power supplies with ceramic output capacitors ≥4.7µF.
For engineers reviewing the PAM3116ABLBADJR datasheet, PAM3116ABLBADJR pinout, PAM3116ABLBADJR application, or PAM3116ABLBADJR equivalent, key selection criteria include adjustable output range (0.8–5.0V), thermal shutdown threshold (150°C), quiescent current (90–150µA), and short-circuit protection (700mA).
Technical Context
The PAM3116ABLBADJR implements a CMOS-based LDO architecture with internal 0.8V bandgap reference and external resistor feedback for precise output voltage setting. Its low dropout enables operation with VIN as low as 2.5V while maintaining regulated output down to 0.8V.
It integrates over-temperature shutdown with 40°C hysteresis, current limiting (~2.5A), and short-circuit protection (~700mA). Stability is guaranteed with ≥4.7µF ceramic output capacitance and ESR < 100mΩ, eliminating need for tantalum or electrolytic capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5A continuous - supports FPGA core rails and high-current microprocessor I/O supplies |
| Dropout Voltage | 300mV @ 1.5A, VO ≥ 2.5V - enables efficient regulation from 3.3V input to 3.0V output |
| Reference Voltage | 0.8V ±1.2% - sets minimum output and defines feedback ratio for precision VOUT scaling |
| Quiescent Current | 90–150µA - minimizes standby power loss in always-on subsystems |
| PSRR | 70dB @ 100Hz - suppresses low-frequency ripple from upstream DC/DC converters |
| Output Noise | 50µVRMS (10Hz–100kHz) - meets low-noise requirements for RF bias and analog sensor supplies |
| Thermal Shutdown | 150°C trip, 110°C recovery - prevents permanent damage during sustained overload or poor heatsinking |
Pinout & Package
Package: SOP-8 (Surface-Mount Small Outline Package, 150mil body width, standard lead pitch 1.27mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 2) | Input supply rail | Accepts 2.5–6.0V input; requires ≥4.7µF ceramic bypass capacitor to GND |
| EN (Pin 3) | Enable control input | Active-high logic; 1.5V threshold ensures compatibility with 1.8V/3.3V GPIO |
| ADJ (Pin 6) | Feedback reference node | Connects to resistor divider; senses 0.8V reference to set VOUT = 0.8 × (1 + R1/R2) |
| VOUT (Pin 7) | Regulated output | Delivers up to 1.5A; requires ≥4.7µF ceramic output capacitor for stability |
| GND (Pin 4) | Power ground | Common return path for input, output, and feedback circuits; must be low-impedance |
| NC (Pins 1,5,8) | No internal connection | Not bonded; must remain unconnected or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage | 0.8V to 5.0V via external resistors - enables single BOM for multiple rail voltages |
| Ceramic capacitor stability | Stable with ≥4.7µF X5R/X7R ceramic CO - eliminates ESR constraints and reduces board area vs. tantalum |
| Low-noise regulation | 50µVRMS output noise - suitable for powering RF transceivers and precision ADC references |
| Integrated protection | Current limit (~2.5A), thermal shutdown (150°C), and short-circuit current (~700mA) - reduces need for external fault management circuitry |
| High PSRR at low frequency | 70dB @ 100Hz - effectively filters switching noise from buck converter outputs used as LDO input |
Applications
| Set-Top Box Power Rails | Smartphone Charger Output Stage |
|---|---|
Use Scenario: Regulating 3.3V and 1.2V rails for demodulator ICs and memory interfaces in cable/satellite STBs. IC Role / Device Role / Timing Role: Post-regulator for buck converter outputs, providing clean, low-noise supply under dynamic load steps. Use Value: 300mV dropout preserves efficiency when input drops to 3.6V; 50µVRMS noise avoids video artifacting in analog signal paths. | Use Scenario: Final-stage regulation of USB PD fast-charger outputs to deliver precise 5V/9V/12V to device battery management ICs. IC Role / Device Role / Timing Role: Adjustable LDO configured as programmable output stage, enabling multi-voltage compliance without discrete regulators. Use Value: 0.8V reference and resistor feedback allow accurate VOUT setting across wide temperature range (±1.5%); EN pin enables sequencing with system controller. |
| FPGA Core Supply | Communication Equipment Bias Rails |
Use Scenario: Providing 1.0V or 1.2V core voltage to Xilinx Artix-7 or Intel Cyclone V FPGAs in industrial gateways. IC Role / Device Role / Timing Role: High-current, low-noise core regulator with fast transient response to handle FPGA logic switching currents. Use Value: 1.5A rating meets peak current demand; 70dB PSRR at 100Hz suppresses switching artifacts from upstream DC/DC converters. | Use Scenario: Generating clean 2.5V and 3.3V bias for RF front-end LNAs, mixers, and clock buffers in small-cell base stations. IC Role / Device Role / Timing Role: Low-noise local regulator decoupling sensitive analog/RF circuitry from noisy digital power domains. Use Value: 50µVRMS output noise prevents phase noise degradation in LO paths; thermal shutdown protects against enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2132AKTR-G1 | Fixed 3.3V output; 1.5A rating; 250mV dropout @ 1.5A; no ADJ pin | Not adjustable - limited to single-rail designs; lacks enable and feedback flexibility | Select only if fixed 3.3V output suffices and board space allows SOP-8 footprint |
| AP7173-W5-7 | Adjustable 0.6–5.0V; 2A rating; 200mV dropout @ 2A; integrated soft-start | Higher current and lower dropout - better for future-proofing or higher load margins | Preferred for new designs requiring >1.5A or tighter dropout; pinout differs (SOT-23-5 vs SOP-8) |
Compared with AP2132AKTR-G1 and AP7173-W5-7, the PAM3116ABLBADJR offers proven SOP-8 adjustability and thermal robustness but lacks soft-start and has higher dropout than AP7173; AP2132 is simpler but inflexible for multi-rail systems.
Availability
PAM3116ABLBADJR is available at Aetrix Electronics and suitable for LCD TV power management, set-top box subsystems, and smartphone charger output stages requiring stable component supply and long-term obsolescence planning.
Supply support for PAM3116ABLBADJR 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, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The PAM3116 belongs to Diodes' high-current LDO regulator product line, designed specifically for post-regulation in compact, thermally constrained power systems where low dropout, ceramic-capacitor compatibility, and adjustable output are critical.
FAQ
What is the minimum required output capacitance for stable operation?
The PAM3116ABLBADJR requires a minimum 4.7µF ceramic capacitor (X5R/X7R, ESR < 100mΩ) between VOUT and GND for guaranteed stability across all operating conditions. A larger low-ESR capacitor (e.g., 10µF) is recommended to improve transient response and ripple rejection, especially under fast load steps or when placed remotely from the power source.
Can the PAM3116ABLBADJR be used with an input voltage below 2.5V?
No - the absolute minimum input voltage is 2.5V per the Recommended Operating Conditions table. Operation below this violates specification and may result in loss of regulation, increased dropout, or failure to start. The device is not characterized or guaranteed for reliable function below 2.5V, even if the absolute maximum rating allows brief exposure to lower voltages.
How does the EN pin behave during power-up sequencing?
The EN pin is active-high with a 1.5V threshold and sub-1µA bias current. When pulled high above 1.5V (e.g., by a microcontroller GPIO or RC delay network), the regulator enables within 50µs. If left floating, internal pull-down ensures default disable state; tying EN directly to VIN is acceptable but removes independent control capability.
Is the PAM3116ABLBADJR RoHS-compliant and halogen-free?
Yes - the "R" suffix in PAM3116ABLBADJR denotes RoHS-compliant, lead-free (Pb-free), and halogen-free packaging per Diodes Incorporated's standard environmental specifications. The SOP-8 package uses matte tin lead finish and complies with JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) for reflow soldering.
PAM3116ABLBADJR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.4V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 50dB (100Hz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOP
PAM3116ABLBADJR FAQ
1.How can I place an order for PAM3116ABLBADJR through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM3116ABLBADJR 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 PAM3116ABLBADJR reliable?
The price and inventory of PAM3116ABLBADJR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM3116ABLBADJR is usually 5 days.
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Once your PAM3116ABLBADJR 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 PAM3116ABLBADJR?
For technical support, including PAM3116ABLBADJR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM3116ABLBADJR requirements.
6.How does Aetrix verify that PAM3116ABLBADJR is sourced from the original manufacturer or authorized distributors?
All PAM3116ABLBADJR 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 PAM3116ABLBADJR meets industry standards.
7.What is the process for return or replacement of PAM3116ABLBADJR?
All PAM3116ABLBADJR units undergo pre-shipment inspection (PSI). If there is an issue with PAM3116ABLBADJR, 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 PAM3116ABLBADJR part is unused and in its original packaging.
Return procedure for PAM3116ABLBADJR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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