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Diodes Incorporated PAM2310BECADJR
- Part No.:
- PAM2310BECADJR
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
PAM2310BECADJR.pdf
- Description:
- IC REG BUCK ADJ 2A 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:10,329
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Product details
Overview
PAM2310BECADJR from Diodes Incorporated is a 2A synchronous step-down DC-DC converter in SO-8 package, designed for point-of-load regulation from single-cell Li+/Li-polymer or multi-cell alkaline/NiMH sources. It operates from 2.7V–5.5V input, delivers adjustable output (0.6V to VIN), achieves up to 95% peak efficiency, and features 1.5MHz fixed-frequency PWM control with no external compensation required.
For engineers reviewing the PAM2310BECADJR datasheet, PAM2310BECADJR pinout, PAM2310BECADJR application, or PAM2310BECADJR equivalent, key selection criteria include its 42µA no-load quiescent current, <1µA shutdown current, 100% duty-cycle capability for low-dropout operation, integrated MOSFETs with RDS(ON) of 90mΩ (HS) / 70mΩ (LS), and thermal/short-circuit protection.
Technical Context
The PAM2310BECADJR uses a constant-frequency PWM controller with internal high-side P-channel and low-side N-channel MOSFETs, enabling synchronous rectification without external diodes. Its feedback loop references a precise 0.600V (±2%) internal bandgap, supporting output voltage setting via external resistor divider.
It integrates soft-start, undervoltage lockout (UVLO), cycle-by-cycle current limiting (3A typical), thermal shutdown at +150°C (with +30°C hysteresis), and automatic recovery. The 1.5MHz switching frequency allows compact external components-typically 2.2µH inductor and 22µF ceramic capacitors-while maintaining stable transient response under 2A load steps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single Li+/Li-polymer cell (3.0–4.2V) or three alkaline/NiMH cells (3.6–4.5V) without pre-regulation. |
| Output Current | Up to 2A continuous - sufficient for DDR memory rails, FPGA core supplies, and SoC I/O domains. |
| Output Voltage Range | 0.6V to VIN - enables direct 1.2V, 1.5V, 1.8V, 2.5V, or 3.3V generation with external resistive divider. |
| Switching Frequency | 1.5MHz (typ.) - permits use of small 2.2µH inductors and low-ESR ceramic capacitors, reducing board area. |
| Quiescent Current | 42µA (typ.) - minimizes battery drain in always-on subsystems such as real-time clocks or sensor interfaces. |
| Shutdown Current | <1µA - ensures negligible leakage during system sleep modes, critical for portable equipment battery life. |
| RDS(ON) HS / LS | 90mΩ / 70mΩ - reduces conduction losses at full load, enabling >90% efficiency at 1.8V/2A output from 5V input. |
Pinout & Package
The PAM2310BECADJR is housed in a standard SO-8 surface-mount package (4.9mm × 6.0mm, 1.45mm height) with exposed thermal pad (not electrically connected). Pin 1 and Pin 6 are NC (no connect); Pin 4 is GND; Pin 5 is FB with 0.6V reference; Pin 7 is EN with 1.5V high-threshold and 0.3V low-threshold logic control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| NC (Pin 1) | No connection | Unused terminal; must be left floating or tied to GND per layout best practice. |
| VIN (Pin 2) | Main power input | Accepts 2.7–5.5V supply; requires local 22µF low-ESR ceramic capacitor for stability and RMS current handling. |
| SW (Pin 3) | Switch node | Connects to inductor and catch capacitor; carries high di/dt square-wave current; requires tight layout to minimize EMI. |
| GND (Pin 4) | Power and signal ground | Primary return path for input/output currents and IC bias; must be connected to low-impedance ground plane. |
| FB (Pin 5) | Feedback input | Senses output voltage via resistor divider; internal 0.6V reference sets regulation accuracy (±2%) across load/line/temp. |
| NC (Pin 6) | No connection | Unused terminal; no internal connection; avoid routing signals nearby. |
| EN (Pin 7) | Enable control | Active-high logic input; ≥1.5V enables regulator; ≤0.3V disables with <1µA shutdown current. |
| NC (Pin 8) | No connection | Unused terminal; leave unconnected or tie to GND if mechanical stability required. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Synchronous Power Stage | Eliminates external Schottky diode and reduces conduction loss by ~40% vs. asynchronous designs at 2A load. |
| 100% Duty-Cycle Operation | Enables dropout mode down to VOUT = VIN − IOUT × RDS(ON)_HS, supporting near-input-output regulation (e.g., 4.8V→4.5V). |
| No External Compensation Required | Reduces BOM count and layout sensitivity; internal Type-II compensation ensures stability with standard 2.2µH/22µF output filter. |
| Thermal Shutdown with Hysteresis | Shuts down at +150°C junction temperature and resumes at +120°C, preventing thermal runaway during overload or poor heatsinking. |
| Current-Limit Protection | 3A cycle-by-cycle peak current limit prevents inductor saturation and MOSFET failure during short-circuit or startup into heavy load. |
Applications
| DDR Memory Power Supply | Set-Top Box Core Rail |
|---|---|
|
Use Scenario: Providing tightly regulated 1.2V or 1.35V to DDR3/DDR4 memory modules in consumer media devices. IC Role / Device Role / Timing Role: Primary point-of-load buck regulator delivering fast transient response to handle burst-mode memory access. Use Value: 1.5MHz switching and 2A capability meet DDR voltage ripple (<30mVp-p) and load-step (0–2A in <1µs) requirements without external compensation. |
Use Scenario: Generating 3.3V or 2.5V for SoC peripherals, tuners, and HDMI interface circuitry in cable/satellite receivers. IC Role / Device Role / Timing Role: Secondary buck converter downstream of main 5V rail, enabling independent power domain control and sequencing. Use Value: 42µA quiescent current extends standby time; EN pin allows firmware-controlled power gating of non-critical subsystems. |
| Video Card GPU I/O Rail | Telecom Line Card Bias Supply |
|
Use Scenario: Delivering 1.8V or 2.5V to GPU I/O buffers and display interface logic in embedded graphics modules. IC Role / Device Role / Timing Role: High-efficiency, low-noise buck regulator placed adjacent to GPU die to minimize trace inductance and noise coupling. Use Value: SO-8 package with thermal pad supports >1W dissipation; 95% peak efficiency reduces localized heating near sensitive analog circuits. |
Use Scenario: Powering PHY transceivers, clock buffers, and management microcontrollers on telecom line cards operating from 3.3V or 5V backplanes. IC Role / Device Role / Timing Role: Compact, robust DC-DC stage replacing linear regulators to improve power density and thermal performance in confined card slots. Use Value: UVLO prevents deep battery discharge in backup systems; short-circuit protection avoids cascading failures in dense multi-rail environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP61200Z6-7 | Successor device from Diodes; same SO-8 package, 2A rating, but improved 30µA IQ and AEC-Q100 qualification option. | Recommended for new automotive or industrial designs requiring extended temperature range (−40°C to +125°C) and PPAP support. | Select AP61200Z6-7 for new designs where long-term availability, automotive compliance, or lower quiescent current are prioritized. |
| TPS62231DRVR | Texas Instruments part; 2A, 2.05–6.5V input, 1.5MHz, but requires external compensation and has higher 25µA IQ (no shutdown spec). | Lacks integrated soft-start and thermal shutdown hysteresis; suited for TI ecosystem designs with existing compensation expertise. | Choose TPS62231DRVR only when leveraging TI's WEBENCH tools or when matching existing TI-based reference designs. |
Compared with the PAM2310BECADJR, the AP61200Z6-7 offers lower quiescent current and automotive qualification, while the TPS62231DRVR trades integration for design flexibility in TI-centric platforms-neither matches the PAM2310's combination of zero-compensation, 100% duty cycle, and sub-1µA shutdown in a cost-optimized SO-8.
Availability
PAM2310BECADJR is available at Aetrix Electronics and suitable for DDR memory power supplies, set-top box core rails, and video card I/O regulation requiring stable component supply, consistent parametric performance, and long-lifecycle support for industrial and consumer electronics programs.
Supply support for PAM2310BECADJR 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, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The PAM2310 belongs to Diodes' Power Management portfolio, engineered specifically for high-efficiency, low-noise point-of-load conversion in space-constrained portable and networking equipment where minimal external components and ultra-low quiescent current are essential.
FAQ
What is the minimum output voltage achievable with the PAM2310BECADJR?
The PAM2310BECADJR regulates down to 0.6V, set by its internal feedback reference voltage. This is confirmed in the Electrical Characteristics table (VFB = 0.588–0.612V) and supported by the functional block diagram showing a precision 0.6V bandgap reference feeding the error amplifier. Output voltages below 0.6V are not supported.
Can the PAM2310BECADJR operate with input and output voltages equal to each other?
Yes-the PAM2310BECADJR supports 100% duty-cycle operation, allowing VOUT ≈ VIN − IOUT × RDS(ON)_HS. At 2A load and 90mΩ high-side RDS(ON), it maintains regulation down to VOUT = VIN − 180mV, making it suitable for low-dropout applications like 5.0V-to-4.8V or 3.6V-to-3.4V conversion without linear regulator inefficiency.
Is an external soft-start capacitor required for the PAM2310BECADJR?
No-soft-start is fully internal. The datasheet states "Internal Soft Start" in the Features list and confirms in Application Information that the IC digitally ramps switch current in steps to limit in-rush current and prevent output overshoot. No external capacitor or resistor is needed or recommended.
Does the PAM2310BECADJR require a minimum load to maintain regulation?
No minimum load is specified. The device maintains regulation from 0A to 2A (per Electrical Characteristics table), and its 42µA quiescent current ensures stable operation even at no load. The feedback amplifier remains active across the full load range, and no "minimum load resistor" is mentioned in the datasheet or application circuit.
PAM2310BECADJR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
PAM2310BECADJR FAQ
1.How can I place an order for PAM2310BECADJR through Aetrix?
Please submit a Request for Quotation (RFQ) for PAM2310BECADJR 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 PAM2310BECADJR reliable?
The price and inventory of PAM2310BECADJR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PAM2310BECADJR is usually 5 days.
3.What payment methods are accepted for PAM2310BECADJR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PAM2310BECADJR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PAM2310BECADJR?
PAM2310BECADJR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PAM2310BECADJR 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 PAM2310BECADJR?
For technical support, including PAM2310BECADJR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PAM2310BECADJR requirements.
6.How does Aetrix verify that PAM2310BECADJR is sourced from the original manufacturer or authorized distributors?
All PAM2310BECADJR 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 PAM2310BECADJR meets industry standards.
7.What is the process for return or replacement of PAM2310BECADJR?
All PAM2310BECADJR units undergo pre-shipment inspection (PSI). If there is an issue with PAM2310BECADJR, 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 PAM2310BECADJR part is unused and in its original packaging.
Return procedure for PAM2310BECADJR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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