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Analog Devices Inc. LTM8026EV#PBF
- Part No.:
- LTM8026EV#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Converters
- Package:
- 81-BLGA Module
- Datasheet:
-
LTM8026EV#PBF.pdf
- Description:
- DC DC CONVERTER 1.2-24V 120W
- Quantity:
- Payment:
- Shipping:
Inventory:3,048
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Product details
Overview
LTM8026EV#PBF from Analog Devices is a 36V input, 5A constant-voltage/constant-current (CVCC) µModule® step-down regulator integrating controller, power switches, inductor, and support components in an LGA package. It operates from 6V–36V input, delivers 1.2V–24V output, regulates current up to 5A with ±5.6A accuracy at 1.5V CTL_I/CTL_T, and supports programmable soft-start and frequency tuning via RT pin - used in high-power LED drivers and µController-based battery chargers.
For engineers reviewing the LTM8026EV#PBF datasheet, LTM8026EV#PBF pinout, LTM8026EV#PBF application, or LTM8026EV#PBF equivalent, key selection criteria include CVCC operation with dual analog current limit control (CTL_I/CTL_T), thermal performance under 5A load at 36VIN, LGA package thermal resistance (θJC(bottom) = 5.4°C/W), and compatibility with external SYNC clock up to 1MHz.
Technical Context
The LTM8026EV#PBF implements fixed-frequency average current mode control to independently regulate inductor current and output voltage. Its dual analog current limit inputs (CTL_I and CTL_T) determine regulated output current by selecting the lower of two 0–1.5V control voltages, enabling precise current limiting or temperature-compensated derating.
It features internal compensation, a buffered 2V VREF output capable of 0.5mA drive, and a dedicated SS pin with 11µA charging current for controlled start-up. The RUN pin provides precision enable/UVLO functionality with 1.55V turn-on threshold and 130mV hysteresis, while SYNC allows external clock synchronization when RT is set to 20% below fSYNC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6V to 36V - supports wide industrial and automotive supply rails; absolute max 40V. |
| Output Voltage Range | 1.2V to 24V - set by single resistor from ADJ to GND; ADJ regulated to 1.19V. |
| Max Output Current | 5A - accurately regulated in CVCC mode; ±5.6A accuracy at full-scale CTL_I/CTL_T control. |
| Switching Frequency | 100kHz to 1MHz - programmed via RT resistor (e.g., 40.2kΩ = 1MHz); SYNC-compatible. |
| Current Limit Control | 0–1.5V on CTL_I/CTL_T pins - lower voltage sets max output current; enables thermistor-based thermal foldback. |
| Package Thermal Resistance | θJC(bottom) = 5.4°C/W - enables high-power dissipation via PCB ground plane conduction. |
| Soft-Start Control | SS pin with 11µA current source - external capacitor sets ramp time; prevents inrush current. |
Pinout & Package
The LTM8026EV#PBF uses an 81-lead LGA package (15mm × 11.25mm × 2.82mm) with RoHS-compliant Au finish, optimized for automated SMT assembly and thermal conduction through bottom GND pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Bank 1) | Power output terminals | Deliver regulated output; connect bulk output capacitors and load directly between these pins and GND. |
| GND (Bank 2) | Ground reference and thermal path | Primary heat sink interface; must be tied to large local ground plane for θJC(bottom) = 5.4°C/W performance. |
| VIN (Bank 3) | Main input power supply | Supplies internal regulator and power switches; requires local low-ESR ceramic bypass capacitor. |
| CTL_I (D8) | Analog current limit input | Sets max output current via 0–1.5V; if unused, tie to VREF to disable. |
| CTL_T (D8) | Thermal current limit input | Accepts NTC thermistor network for temperature-dependent current foldback; same 0–1.5V range as CTL_I. |
| ADJ (K8) | Output voltage feedback reference | Regulated to 1.19V; RADJ = (11.9/(VOUT − 1.19)) kΩ sets output voltage. |
| RT (G8) | Frequency programming node | Resistor to GND sets switching frequency; e.g., 40.2kΩ → 1MHz; open circuit not allowed. |
| RUN (L6) | Enable/UVLO control | Turns device on above 1.55V; 5.5µA sink current enables resistor-divider UVLO with hysteresis. |
| SS (J8) | Soft-start timing node | 11µA current charges external capacitor; controls current ramp rate during startup. |
| SYNC (L7) | External clock synchronization | Accepts TTL/CMOS clock; RT must be set to 20% lower than fSYNC; ground when unused. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated µModule architecture | Includes controller, MOSFETs, shielded inductor, and compensation - reduces design cycle time and layout risk. |
| Dual analog current limit control | Independent CTL_I and CTL_T inputs allow simultaneous programmable current limit and thermal derating without external op-amps. |
| Wide CVCC operating range | Delivers full 5A regulated current across 1.2V–24V output, enabling single-part support for diverse LED and battery chemistries. |
| Thermally enhanced LGA package | 81-pad LGA with exposed thermal pad achieves θJC(bottom) = 5.4°C/W - critical for sustained 5A operation at high VIN. |
| Programmable frequency & synchronization | RT resistor sets 100kHz–1MHz; SYNC pin enables noise-sensitive multi-rail systems to avoid beat frequencies. |
Applications
| LED Driver | Battery Charger |
|---|---|
Use Scenario: Driving high-brightness LEDs in automotive headlamps or industrial lighting arrays requiring stable current despite input voltage variation. IC Role / Device Role / Timing Role: Acts as constant-current source with programmable 0–5A output; CTL_T monitors heatsink temperature to prevent LED thermal runaway. Use Value: Eliminates need for external current-sense amplifier and discrete FET driver; maintains ±5.6A accuracy over full 1.2V–24V range. | Use Scenario: Charging Li-ion or lead-acid batteries in portable medical devices or backup power systems with adaptive current profiles. IC Role / Device Role / Timing Role: Functions as CVCC charger controller; ADJ sets termination voltage, CTL_I sets charge current, SS ensures controlled ramp into constant-voltage phase. Use Value: Supports full 5A charge current with integrated inductor and thermal foldback - reduces BOM count and improves reliability vs. discrete solutions. |
| Industrial Power Supply | SuperCapacitor Charger |
Use Scenario: Providing regulated 5V/3.3V rails for PLC I/O modules or motor drives where input voltage varies from 12V to 36V due to battery or field wiring. IC Role / Device Role / Timing Role: Serves as primary non-isolated DC/DC converter; RUN pin enables system-level sequencing; SYNC aligns switching to reduce EMI in dense layouts. Use Value: Delivers >85% efficiency at 5A/12VIN→5VOUT; compact LGA footprint saves board space vs. discrete buck + inductor + controller. | Use Scenario: Charging large supercapacitor banks in energy harvesting or peak power assist applications where controlled current ramp prevents dielectric stress. IC Role / Device Role / Timing Role: Operates in constant-current mode until capacitor voltage reaches target; ADJ sets final CV threshold, CTL_I limits inrush to safe dV/dt. Use Value: Enables direct 36VIN-to-supercap charging with no external current sense or gate driver; built-in soft-start avoids voltage overshoot during initial charge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-voltage/constant-current regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTM8025EY#PBF | 36VIN, 3A output; same LGA package but lower current rating; no CTL_T pin. | Suitable for ≤3A CVCC loads; lacks thermal foldback capability. | Select when 3A suffices and thermal derating is unnecessary - lower cost and smaller thermal solution. |
| LTM4625EY#PBF | 36VIN, 5A, but voltage-only regulation (no constant-current mode); includes PMBus interface. | Used in digitally managed power systems requiring telemetry, not analog current control. | Choose for systems needing digital monitoring/control; not a functional replacement for CVCC operation. |
Compared with LTM8025EY#PBF and LTM4625EY#PBF, the LTM8026EV#PBF uniquely combines 5A CVCC operation, dual analog current limit inputs, and thermally optimized LGA packaging - making it the only option for high-accuracy analog-controlled current sources in space-constrained industrial designs.
Availability
LTM8026EV#PBF is available at Aetrix Electronics and suitable for high-reliability LED driver, battery charging, and industrial power supply applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for LTM8026EV#PBF 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 industrial, automotive, communications, and healthcare markets.
The LTM8026EV#PBF belongs to the µModule regulator product line, designed to simplify power system design by integrating magnetics and control circuitry into compact, thermally efficient packages for demanding embedded and industrial applications.
FAQ
What is the maximum output current capability of the LTM8026EV#PBF?
The LTM8026EV#PBF delivers up to 5A of regulated output current in constant-current mode across its full 1.2V–24V output range. Its current limit accuracy is specified as ±5.6A at 1.5V CTL_I/CTL_T input, and thermal protection activates above 125°C junction temperature to safeguard reliability during overload conditions. The LTM8026EV#PBF maintains this rating with proper PCB thermal design using its θJC(bottom) = 5.4°C/W path.
How does the LTM8026EV#PBF implement constant-current regulation?
The LTM8026EV#PBF uses average current mode control to regulate inductor current independently of output voltage. Two analog inputs - CTL_I and CTL_T - accept 0–1.5V control signals; the lower voltage determines the regulated output current limit. This enables precise current setting via resistor divider or temperature-responsive NTC network. The LTM8026EV#PBF then maintains that current until output voltage reaches the ADJ-set threshold, transitioning to constant-voltage mode.
Can the LTM8026EV#PBF be synchronized to an external clock?
Yes, the LTM8026EV#PBF supports external clock synchronization via its SYNC pin (L7). To use this feature, the RT resistor must be selected to set the internal oscillator frequency 20% lower than the external SYNC pulse frequency. The SYNC pin accepts TTL/CMOS logic levels and must be grounded when unused. Noise coupling to the SYNC trace should be minimized per layout guidelines in the datasheet to ensure robust operation of the LTM8026EV#PBF.
What package type and finish does the LTM8026EV#PBF use?
The LTM8026EV#PBF uses an 81-lead land grid array (LGA) package measuring 15mm × 11.25mm × 2.82mm with RoHS-compliant gold (Au) terminal finish (e4 code). This thermally enhanced package features an exposed bottom thermal pad for efficient heat transfer to the PCB ground plane, achieving θJC(bottom) = 5.4°C/W. The LTM8026EV#PBF is rated for –40°C to 125°C internal operating temperature.
How is output voltage programmed on the LTM8026EV#PBF?
Output voltage on the LTM8026EV#PBF is set by a single resistor (RADJ) connected between the ADJ pin (K8) and GND. The ADJ pin is internally regulated to 1.19V, so RADJ = (11.9 / (VOUT − 1.19)) kΩ. For example, a 9.09kΩ resistor sets VOUT = 2.5V. No additional compensation components are required, as the LTM8026EV#PBF is fully internally compensated - simplifying design and reducing component count.
LTM8026EV#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 81-BLGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 6V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 1.2 ~ 24V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 5A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- OTP, OVP, SCP
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 81-LGA (15x11.25)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
LTM8026EV#PBF FAQ
1.How can I place an order for LTM8026EV#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTM8026EV#PBF 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 LTM8026EV#PBF reliable?
The price and inventory of LTM8026EV#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTM8026EV#PBF is usually 5 days.
3.What payment methods are accepted for LTM8026EV#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTM8026EV#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTM8026EV#PBF?
LTM8026EV#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTM8026EV#PBF 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 LTM8026EV#PBF?
For technical support, including LTM8026EV#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTM8026EV#PBF requirements.
6.How does Aetrix verify that LTM8026EV#PBF is sourced from the original manufacturer or authorized distributors?
All LTM8026EV#PBF 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 LTM8026EV#PBF meets industry standards.
7.What is the process for return or replacement of LTM8026EV#PBF?
All LTM8026EV#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTM8026EV#PBF, 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 LTM8026EV#PBF part is unused and in its original packaging.
Return procedure for LTM8026EV#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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