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Analog Devices Inc. LTM4662MPY
- Part No.:
- LTM4662MPY
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Converters
- Package:
- 88-BBGA Module
- Datasheet:
-
LTM4662MPY.pdf
- Description:
- 2X 15A OR 1X 30A DC/DC ?MODULE R
- Quantity:
- Payment:
- Shipping:
Inventory:4,244
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Product details
Overview
LTM4662MPY from Analog Devices is a dual-output, thermally enhanced µModule® DC/DC regulator delivering 15A per channel (30A single-output mode) with integrated power FETs, inductors, and support circuitry. It operates from 4.5V–20V input, supports 0.6V–5.5V output voltage per channel via external resistors, achieves up to 96% efficiency, and features current-mode control for fast transient response-used in high-density point-of-load power for telecom baseband units.
For engineers reviewing the LTM4662MPY datasheet, LTM4662MPY pinout, LTM4662MPY application, or LTM4662MPY equivalent, this page delivers verified specifications, thermal-grade packaging details (–55°C to 125°C), multiphase synchronization capability, and real-world decoupling guidance for stable 15A/channel operation under dynamic load steps.
Technical Context
The LTM4662MPY implements two independent valley-current-mode controlled buck regulators with integrated top/bottom MOSFETs and shielded inductors. Each channel uses a differential remote sense amplifier (VOUTS1/VOUTS1–, VOUTS2/VOUTS2–) and supports internal or external compensation via COMP1A/COMP1B and COMP2A/COMP2B pins.
It enables precise rail sequencing via TRACK/SS1/SS2 with 1.0µA pull-up current, supports frequency synchronization (250kHz–1MHz) through MODE_PLLIN, and provides per-channel temperature monitoring via dedicated TEMP1+/TEMP1– and TEMP2+/TEMP2– diode interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 15A per channel continuous (30A in single-output parallel mode); derated to 13A/channel at 3.3–5V outputs with VIN ≥6V. |
| Input Voltage Range | 4.5V–20V DC; supports 2.375V minimum with 5V bias on CPWR pin for low-input applications. |
| Output Voltage Range | 0.6V–5.5V per channel, set by external resistor dividers; ±1.5% total DC output error over line/load/temperature. |
| Switching Frequency | Programmable 250kHz–1MHz via FREQ pin resistor; synchronized operation supported within ±30% of programmed frequency. |
| Efficiency | Up to 96% at 12VIN→1.2VOUT, 15A; optimized for 300kHz–750kHz operation per datasheet recommendations. |
| Thermal Rating | MP-grade: –55°C to +125°C internal operating temperature; θJCbottom = 1.5°C/W enables high-power dissipation in compact layouts. |
| Protection Features | Overvoltage lockout (±7.5% PGOOD trip), overcurrent foldback, UVLO on INTVCC, and soft-start via TRACK/SS pins. |
Pinout & Package
Package: 88-ball BGA, 11.25mm × 15mm × 5.74mm, SnPb or RoHS-compliant finish, thermally enhanced bottom-side thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 / VIN2 | Power Input Terminals | Dual input paths for independent or shared input supply; each requires local 10µF×2 ceramic decoupling per channel. |
| VOUT1 / VOUT2 | Power Output Terminals | High-current output nodes (15A/channel); connect directly to load with low-impedance GND return path. |
| VOUTS1 / VOUTS2 | Remote Sense Inputs (+) | Connect to output load point for precision regulation; internal 49.9Ω resistor protects against open-sense faults. |
| VOUTS1– / VOUTS2– | Remote Sense Inputs (–) | Differential negative sense terminals; tie to output capacitor negative terminal for noise-immune feedback. |
| TRACK/SS1 / TRACK/SS2 | Soft-Start & Tracking Control | 1.0µA pull-up current enables programmable ramp rate; used for rail sequencing or master-slave tracking configuration. |
| COMP1A / COMP2A | Error Amplifier Output | Current-mode threshold control node; voltage range 0–2.4V; connects to external compensation network if required. |
| TEMP1+ / TEMP1– TEMP2+ / TEMP2– |
Onboard Temperature Diodes | Differential diode pairs per channel; 100µA bias yields 0.598V at 25°C, –2.0mV/°C coefficient for accurate die-temp monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 15A or single 30A output | Enables flexible power architecture: independent dual-rail generation or high-current single-rail with interleaved phase control. |
| Multiphase current sharing | Supports seamless paralleling of multiple LTM4662MPY modules using PHASMD and CLKOUT for phase alignment and ripple reduction. |
| Differential remote sense amplifiers | Compensates for PCB IR drop up to 100mV; maintains ±0.5% regulation accuracy at full 15A load across typical board traces. |
| Adjustable switching frequency (250kHz–1MHz) | Allows EMI optimization and thermal trade-off tuning; 350kHz–450kHz recommended for best efficiency vs. size balance. |
| Built-in temperature monitor diodes | Per-channel die temperature sensing eliminates need for external sensors; supports thermal throttling or system-level fault reporting. |
| Pin-compatible with LTM4646 | Enables drop-in upgrade path from 13A dual-output to 15A dual-output without PCB layout changes or footprint redesign. |
Applications
| Telecom Baseband Processing | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Powering FPGA, ASIC, and DDR memory rails in 5G macro base station baseband units requiring tight voltage tolerance and rapid load transients. IC Role / Device Role / Timing Role: Dual-output point-of-load regulator supplying 0.85V core and 1.2V I/O rails with synchronized soft-start and rail sequencing. Use Value: Achieves <20µs settling time for 0A→6A load steps and ±1.5% DC accuracy ensures signal integrity in high-speed SerDes interfaces. |
Use Scenario: Providing isolated 3.3V and 5V logic supplies in modular industrial controllers with extended temperature operation. IC Role / Device Role / Timing Role: Dual-channel DC/DC converter delivering regulated power to microcontroller, CAN transceivers, and analog front-end circuits. Use Value: MP-grade (–55°C to 125°C) rating and onboard temperature diodes enable reliable operation in uncooled cabinet environments. |
| Medical Imaging Signal Chain | Test & Measurement Equipment |
|
Use Scenario: Supplying low-noise analog supply rails for ADCs, DACs, and RF front-ends in portable ultrasound systems. IC Role / Device Role / Timing Role: Dual-output regulator with differential remote sensing and low 15mVP-P output ripple at 15A. Use Value: Maintains <0.1% load regulation and <50mV peak deviation during dynamic imaging bursts, preserving SNR in sensitive analog stages. |
Use Scenario: Generating precision 1.8V and 2.5V reference rails for high-resolution digitizers and arbitrary waveform generators. IC Role / Device Role / Timing Role: Programmable dual-output µModule supporting voltage tracking and external clock synchronization for multi-board timing coherence. Use Value: Frequency sync capability (250kHz–1MHz) allows alignment with system master clock, reducing beat-frequency noise in sampling systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output high-current DC/DC regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTM4646IY#PBF | 13A per channel (vs. 15A), same 11.25mm × 15mm BGA footprint, no CPWR bias option for sub-4.5V operation. | Lower current capacity; suitable where 13A/channel suffices and extended low-VIN operation is not required. | Select when cost sensitivity outweighs need for 15A/channel or 2.375V minimum input capability. |
| LTM4650AIV#PBF | Single 50A output only; no dual-output capability; larger 16mm × 16mm package; higher peak efficiency (97%) but no TRACK/SS or multiphase sync. | Designed for monolithic high-current rails-not for independent dual-rail or sequencing applications. | Choose only for single-rail >30A needs; not a functional substitute for dual-output or rail sequencing use cases. |
Compared with LTM4646IY#PBF, the LTM4662MPY adds 2A/channel headroom and CPWR bias support for low-input designs; versus LTM4650AIV#PBF, it trades raw current for dual-rail flexibility, sequencing, and smaller footprint-making LTM4662MPY optimal for space-constrained, multi-rail embedded systems.
Availability
LTM4662MPY is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and medical imaging systems requiring stable component supply with extended temperature qualification and long-term production continuity.
Supply support for LTM4662MPY 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The LTM4662MPY belongs to the µModule regulator product line-designed to simplify high-current, high-efficiency power delivery in space-constrained applications where integration, reliability, and thermal performance are critical.
FAQ
What is the operating temperature range for the LTM4662MPY?
The LTM4662MPY is rated for an internal operating temperature range of –55°C to +125°C, validated across the full range per JEDEC JESD22-A108. This MP-grade qualification makes it suitable for aerospace, defense, and harsh-environment industrial applications where extended cold-start capability and high-temperature stability are required. The LTM4662MPY maintains specified electrical performance-including ±1.5% output accuracy and 15A current capability-throughout this range.
How does the LTM4662MPY support rail sequencing in multi-voltage systems?
The LTM4662MPY supports rail sequencing via its dedicated TRACK/SS1 and TRACK/SS2 pins, each featuring a 1.0µA internal pull-up current. By connecting a capacitor from TRACK/SS1 to ground, designers program a controlled soft-start ramp; TRACK/SS2 can then be driven by a voltage divider from the first rail's output to achieve coincidental tracking. This enables precise power-up order and slew-rate control between 0.6V–5.5V outputs-critical for FPGAs and processors with strict sequencing requirements.
Can the LTM4662MPY operate below 4.5V input voltage?
Yes-the LTM4662MPY supports operation down to 2.375V input when the CPWR pin is externally biased with a stable 5V supply. In this configuration, the internal control circuitry is powered independently of VIN, enabling functionality in low-input applications such as battery-backed systems or intermediate bus architectures. Without CPWR bias, the minimum input remains 4.5V. The CPWR pin must not exceed 22V and should be decoupled with a 4.7µF ceramic capacitor to SGND.
What is the purpose of the VRNG pin on the LTM4662MPY?
The VRNG pin on the LTM4662MPY selects between two current limit thresholds: tying VRNG to INTVCC sets the full 15A per-channel limit, while connecting it to SGND reduces the limit to 7.5A per channel. This feature enables safe operation under reduced thermal margin conditions or during system debug-without changing external components. The setting is active during both steady-state and transient overload events, and affects overcurrent foldback behavior accordingly.
Does the LTM4662MPY require external compensation components?
No-the LTM4662MPY is internally compensated and stable with standard ceramic output capacitors (≥400µF per channel). External compensation is optional and enabled by disconnecting COMP1B and COMP2B from their respective COMPA pins. This allows fine-tuning for specialized capacitor types (e.g., polymer or POSCAP) or extreme layout parasitics, but is unnecessary for typical applications using the recommended 100µF×4 ceramic output bank per channel.
LTM4662MPY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- LTM®, uModule®
- Package/Case:
- 88-BBGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 20V
- Voltage - Output 1:
- 0.6 ~ 5.5V
- Voltage - Output 2:
- 0.6 ~ 5.5V
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 15A, 15A
- Power (Watts):
- 82.5 W
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output, Remote On/Off, Remote Sense
- Operating Temperature:
- -55°C ~ 125°C
- Efficiency:
- 96%
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 88-BGA (15x11.25)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
LTM4662MPY FAQ
1.How can I place an order for LTM4662MPY through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM4662MPY 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 LTM4662MPY reliable?
The price and inventory of LTM4662MPY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM4662MPY is usually 5 days.
3.What payment methods are accepted for LTM4662MPY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM4662MPY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM4662MPY?
LTM4662MPY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM4662MPY 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 LTM4662MPY?
For technical support, including LTM4662MPY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM4662MPY requirements.
6.How does Aetrix verify that LTM4662MPY is sourced from the original manufacturer or authorized distributors?
All LTM4662MPY 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 LTM4662MPY meets industry standards.
7.What is the process for return or replacement of LTM4662MPY?
All LTM4662MPY units undergo pre-shipment inspection (PSI). If there is an issue with LTM4662MPY, 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 LTM4662MPY part is unused and in its original packaging.
Return procedure for LTM4662MPY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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