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Analog Devices Inc. LTM8003HY
- Part No.:
- LTM8003HY
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Converters
- Package:
- 48-BBGA Module
- Datasheet:
-
LTM8003HY.pdf
- Description:
- DC DC CONVERTER 0.97-18V
- Quantity:
- Payment:
- Shipping:
Inventory:2,589
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Product details
Overview
LTM8003HY from Analog Devices is a 40V input, 3.5A continuous Silent Switcher µModule step-down regulator in a thermally enhanced BGA package. It delivers fixed 3.3V output with FMEA-compliant pinout, supports 3.4V–40V input, operates up to 3MHz switching frequency, and maintains regulation during adjacent-pin shorts-designed for automotive battery regulation and high-density point-of-load applications.
For engineers reviewing the LTM8003HY datasheet, LTM8003HY pinout, LTM8003HY application, or LTM8003HY equivalent, this page provides verified specifications, thermal derating curves, CISPR25 Class 5 EMI performance data, and validated alternative selection guidance for industrial and automotive power designs.
Technical Context
The LTM8003HY integrates current-mode PWM control, internal power switches, a 1.3µH inductor, and support components into a single over-molded BGA. Its Silent Switcher architecture uses dual, opposing current loops and integrated capacitors to suppress magnetic field emissions, enabling CISPR25 Class 5 compliance without external shielding.
It features programmable switching frequency (200kHz–3MHz) via RT resistor, selectable operating modes via SYNC pin (Burst Mode®, pulse-skipping, spread spectrum, or external synchronization), and FMEA-compliant pinout where PG remains low during adjacent-pin faults or floating pins-ensuring predictable behavior in safety-critical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.4V to 40V - supports direct connection to 12V/24V automotive batteries and wide-input industrial supplies. |
| Output Voltage | Fixed 3.3V - factory-trimmed, no external feedback resistors required; FB regulated to 970mV internally. |
| Continuous Output Current | 3.5A at TJ ≤ 150°C - derated per ambient temperature and input voltage; peak current capability is 6A. |
| Switching Frequency | 200kHz to 3MHz - set by RT-to-GND resistor; enables optimization of size vs. efficiency vs. EMI. |
| Quiescent Current | 25µA at 5VOUT - ultra-low standby consumption ideal for always-on automotive modules. |
| Operating Temperature | –40°C to +150°C (H-grade) - qualified for under-hood automotive and high-temperature industrial environments. |
| EMI Performance | CISPR25 Class 5 compliant - meets stringent automotive radiated emission limits without added filters or shields. |
| Package | 48-ball BGA, 9mm × 6.25mm × 3.32mm - thermally enhanced for bottom-side heat transfer; RoHS-compliant SAC305 finish. |
Pinout & Package
Package: 48-ball BGA (9mm × 6.25mm × 3.32mm), thermally enhanced, RoHS-compliant SAC305 finish, MSL Level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (A1, A6, C2, D2, E2, F5, G5, H5) | Power Ground | Primary thermal path and return for high-current loops; must connect to large local ground plane for thermal and EMI performance. |
| VIN (C3, D3, E3, F3) | Input Power Supply | Supplies internal regulator and power switches; requires local low-ESR ceramic bypass capacitor (≥4.7µF). |
| VOUT (C4, D4, E4, F4) | Regulated Output | Delivers 3.3V at up to 3.5A; connects to output filter capacitor (≥47µF) and load. |
| BIAS (G1, G2) | Bias Supply Input | Accepts 3.2V–18V external bias; when tied to VOUT (3.3V), improves light-load efficiency by powering control circuitry externally. |
| RUN (B5, B6) | Enable/Shutdown Control | Pull below 0.9V to disable; pull ≥1.06V to enable; internal pull-up allows tie-to-VIN for always-on operation. |
| PG (B1, C1) | Power Good Output | Open-collector signal goes high when FB reaches 90%–110% of 970mV; valid only when VIN > 3.4V and RUN is active. |
| SYNC (A2, B2) | Mode Selection & Sync Input | GND = Burst Mode®; float = pulse-skipping; 2.9V–4.2V = spread spectrum; driven clock = external sync (pulse-skipping mode). |
| RT (A4, A5) | Frequency Set Input | Resistor-to-GND sets switching frequency (200kHz–3MHz); sensitive to stray capacitance-keep trace short and unshielded. |
| TR/SS (A3, B3) | Soft-Start / Tracking Input | Internal 2µA current source charges external capacitor for soft-start; also accepts tracking voltage for sequencing with other rails. |
| FB (F1, F2) | Feedback Reference | Internally regulated to 970mV; unused in fixed 3.3V version (LTM8003HY-3.3); not connected on board. |
Key Features
| Feature | Design Value |
|---|---|
| FMEA-Compliant Pinout | PG stays low and output remains regulated during adjacent-pin shorts or floating pins-critical for ASIL-B/C system robustness. |
| Silent Switcher Architecture | Dual-loop layout and integrated bypass capacitors reduce peak radiated emissions by >20dB vs. conventional µModules, enabling CISPR25 Class 5 compliance. |
| H-Grade Temperature Rating | Guaranteed operation from –40°C to +150°C junction temperature-supports under-hood automotive placement without derating penalties. |
| Ultra-Low Quiescent Current | 25µA at 5VOUT in shutdown-enables always-on functionality in battery-powered telematics and ADAS modules. |
| Flexible Frequency & Mode Control | Single RT resistor sets 200kHz–3MHz fSW; SYNC pin selects Burst Mode®, spread spectrum, or external sync-no additional ICs needed. |
| Integrated Inductor & Controller | 1.3µH inductor, MOSFETs, and current-mode controller embedded in BGA-reduces design cycle time and PCB area by >50% vs. discrete solutions. |
Applications
| Automotive Battery Regulation | Industrial Distributed Power |
|---|---|
|
Use Scenario: Regulating 12V/24V vehicle battery to stable 3.3V for infotainment MCU and CAN transceivers. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering clean, EMI-compliant 3.3V rail with fast transient response. Use Value: Eliminates need for external EMI filters and heatsinks; withstands cold-crank (4.5V) and load-dump (40V) events per ISO 16750-2. |
Use Scenario: Powering FPGA I/O banks and ADC reference supplies in programmable logic controllers. IC Role / Device Role / Timing Role: High-efficiency, thermally robust DC/DC converter for space-constrained industrial backplanes. Use Value: Delivers 3.5A continuously at 70°C ambient without airflow; BGA footprint enables bottom-side routing and thermal vias to inner layers. |
| Portable Medical Instrumentation | Test & Measurement Equipment |
|
Use Scenario: Providing isolated 3.3V supply for low-noise sensor front-ends in handheld ultrasound devices. IC Role / Device Role / Timing Role: Low-ripple, low-EMI power source minimizing interference with analog signal chains. Use Value: <10mVpp output ripple and CISPR25 Class 5 compliance prevent noise coupling into sensitive RF receive paths. |
Use Scenario: Generating precision 3.3V for microcontroller and memory subsystems in benchtop oscilloscopes. IC Role / Device Role / Timing Role: Stable, low-drift power rail supporting accurate timing and low-jitter clock generation. Use Value: ±0.5% line/load regulation ensures consistent digital logic thresholds across varying input and load conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down µModule applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTM8003IY-3.3#PBF | I-grade (–40°C to +125°C) instead of H-grade; identical electrical specs and pinout. | Not rated for under-hood automotive use above 125°C junction; suitable for interior electronics and industrial controls. | Select when ambient temperature constraints allow lower max junction temp and cost sensitivity favors I-grade. |
| LTM4644EY#PBF | Quad 3A output, 36VIN, but larger 15mm × 15mm × 4.92mm package; higher quiescent current (45µA). | Supports multi-rail sequencing and independent output programming; less suitable for single-rail space-constrained designs. | Choose when multiple synchronized 3.3V rails are needed on one board, and board area permits larger footprint. |
Compared with LTM8003IY-3.3#PBF, the LTM8003HY-3.3#PBF enables higher-temperature deployment without derating; versus LTM4644EY#PBF, it offers 42% smaller footprint and 44% lower quiescent current for single-rail applications.
Availability
LTM8003HY is available at Aetrix Electronics and suitable for automotive battery regulation, industrial distributed power, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTM8003HY 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets since 1965.
The LTM8003HY belongs to the Silent Switcher µModule family-engineered to deliver high-efficiency, low-EMI power conversion in compact, thermally optimized packages for safety-critical and space-constrained applications.
FAQ
What is the maximum continuous output current of the LTM8003HY under typical operating conditions?
The LTM8003HY delivers 3.5A continuous output current when junction temperature is maintained at or below 150°C. Derating curves in the datasheet show that at 70°C ambient with 12VIN and still air, full 3.5A is achievable; at 100°C ambient, output current reduces to ~2.6A. Peak current capability is 6A for short-duration transients.
Does the LTM8003HY require external feedback resistors to set its 3.3V output?
No, the LTM8003HY is the fixed-output variant (LTM8003HY-3.3#PBF) and does not require external feedback resistors. The 3.3V output is factory-trimmed and internally regulated via a 970mV reference at the FB pin. The FB pins (F1, F2) remain unconnected on the PCB.
How does the FMEA-compliant pinout of the LTM8003HY improve system reliability?
The LTM8003HY's FMEA-compliant pinout ensures that if any pin is shorted to an adjacent pin or left floating, the device maintains safe behavior: the PG pin stays low (indicating fault), and the output voltage remains at or below regulation. This prevents undetected overvoltage conditions in safety-critical automotive and industrial systems.
Can the LTM8003HY be synchronized to an external clock, and what are the voltage requirements?
Yes, the LTM8003HY supports external synchronization via the SYNC pin (A2, B2). To enable sync mode, drive SYNC with a CMOS-compatible clock signal (0V to VIN) at the desired frequency. The part will operate in pulse-skipping mode while locked to the external clock, maintaining regulation across load transients.
What thermal interface recommendations apply to the LTM8003HY's BGA package?
The LTM8003HY relies on thermal conduction through its bottom-side GND balls. Use ≥8 thermal vias (0.3mm diameter, filled or capped) under the package, connected to an internal or bottom-layer solid copper plane. Maintain ≥10mm² of exposed copper on the primary GND layer beneath the device, and avoid solder mask over thermal pads to maximize heat transfer.
LTM8003HY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 48-BBGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.4V
- Voltage - Input (Max):
- 40V
- Voltage - Output 1:
- 0.97 ~ 18V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 3.5A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- -
- Operating Temperature:
- -40°C ~ 150°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-BGA (9x6.25)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
LTM8003HY FAQ
1.How can I place an order for LTM8003HY through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM8003HY 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 LTM8003HY reliable?
The price and inventory of LTM8003HY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM8003HY is usually 5 days.
3.What payment methods are accepted for LTM8003HY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM8003HY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM8003HY?
LTM8003HY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM8003HY 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 LTM8003HY?
For technical support, including LTM8003HY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM8003HY requirements.
6.How does Aetrix verify that LTM8003HY is sourced from the original manufacturer or authorized distributors?
All LTM8003HY 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 LTM8003HY meets industry standards.
7.What is the process for return or replacement of LTM8003HY?
All LTM8003HY units undergo pre-shipment inspection (PSI). If there is an issue with LTM8003HY, 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 LTM8003HY part is unused and in its original packaging.
Return procedure for LTM8003HY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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