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Analog Devices Inc. LT8330EDDB#TRPBF
- Part No.:
- LT8330EDDB#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8330EDDB#TRPBF.pdf
- Description:
- IC REG BOOST SEPIC ADJ 1A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,341
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Product details
Overview
LT8330EDDB#TRPBF from Analog Devices is a current-mode DC/DC converter IC supporting boost, SEPIC, and inverting topologies with a 1A/60V internal power switch. It delivers ultralow 6µA quiescent current in Burst Mode, fixed 2MHz switching, and ±1.6V/–0.8V FBX regulation for programmable positive or negative outputs - deployed in 48V telecom boost supplies and portable medical diagnostics.
For engineers reviewing the LT8330EDDB#TRPBF datasheet, LT8330EDDB#TRPBF pinout, LT8330EDDB#TRPBF application, or LT8330EDDB#TRPBF equivalent, key selection criteria include input voltage range (3V–40V), thermal performance of the DFN package, EN/UVLO threshold accuracy (1.60V rising), and compatibility with low-ESR ceramic output capacitors in light-load burst operation.
Technical Context
The LT8330EDDB#TRPBF employs fixed-frequency (2MHz) current-mode control with internal compensation and dual error amplifiers - one active for positive output (FBX = +1.6V reference), the other for negative output (FBX = –0.8V reference). Its architecture enables seamless topology reconfiguration without external component changes.
Frequency foldback activates when FBX approaches GND during startup or fault conditions, extending off-time to prevent inductor current runaway. Soft-start ramps the VC node via internal M2 transistor, limiting peak inductor current and VOUT overshoot while INTVCC (3V LDO) powers gate drivers and internal logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3V to 40V - supports wide-input industrial and automotive battery-supplied systems without pre-regulation. |
| IQ (Burst Mode) | 6µA - enables >10-year battery life in always-on portable medical sensors and IoT edge nodes. |
| Switch Rating | 1A, 60V - handles 48V boost conversion at 135mA output (e.g., front-page application) with margin for transient surges. |
| FBX Reference | +1.60V or –0.80V - single-pin programmability eliminates topology-specific feedback networks and simplifies BOM across boost/inverting designs. |
| fSW | Fixed 2MHz - allows use of sub-2.2µH inductors (e.g., 6.8µH in typical 48V boost), minimizing solution footprint and EMI filter size. |
| EN/UVLO Threshold | 1.68V (rising), 1.60V (falling) - precise 80mV hysteresis enables robust system-level undervoltage lockout with simple resistor dividers. |
| Package | 8-Lead DFN (3mm × 2mm, 0.75mm height) - AEC-Q100 qualified, exposed pad (Pin 9) requires PCB ground soldering for θJA = 60°C/W thermal performance. |
Pinout & Package
LT8330EDDB#TRPBF uses an 8-lead (3mm × 2mm) plastic DFN package with exposed thermal pad (Pin 9, GND). The package is AEC-Q100 qualified and optimized for high-power density in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FBX | Feedback regulation input | Accepts +1.6V (boost/SEPIC) or –0.8V (inverting) reference; determines output polarity and voltage via resistor divider. |
| 2 - NC | No internal connection | Must be tied to local GND for mechanical stability and EMI reduction; no electrical function. |
| 3 - SW | Internal power switch drain | Connects to inductor/diode node; trace area must be minimized to reduce radiated EMI from 2MHz switching transitions. |
| 4 - SW | Internal power switch drain (dual bond wire) | Parallel path with Pin 3 to lower effective RDS(ON) and improve thermal distribution under 1A load. |
| 5 - EN/UVLO | Enable and undervoltage detection | Shuts down IC below 1.60V; resumes operation above 1.68V; draws <1µA when held <0.2V. |
| 6 - INTVCC | Internally regulated 3V supply | Powers gate driver and internal logic; requires ≥1µF low-ESR ceramic capacitor to GND; no external loading permitted. |
| 7 - VIN | Main input supply | 3V–40V input; must be bypassed with 4.7µF–10µF X7R/X5R ceramic capacitor placed adjacent to PIN 7 and GND. |
| 8 - GND | Power and signal ground | Primary ground connection; exposed pad (Pin 9) is electrically GND and must be soldered to PCB ground plane for thermal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | Maintains <15mV output ripple at light loads while drawing only 6µA - critical for battery-powered diagnostic equipment with standby monitoring. |
| Topology-Agnostic FBX Pin | Single feedback pin supports boost, SEPIC, and inverting configurations without hardware change - reduces design iterations and inventory SKUs. |
| Integrated Soft-Start & Foldback | Prevents inductor saturation and switch overcurrent during startup/faults by ramping VC and reducing fSW when FBX ≈ GND - eliminates need for external soft-start timers. |
| AEC-Q100 Qualified DFN | Validated for automotive temperature range (–40°C to +125°C junction); exposed pad enables reliable thermal management in engine-control and ADAS modules. |
| Accurate EN/UVLO Threshold | ±20mV tolerance on 1.60V/1.68V thresholds enables precise system-level brownout protection using standard 1% resistors - avoids false shutdowns in noisy 12V/24V rails. |
Applications
| 48V Telecom Power Supply | Portable Medical Imaging |
|---|---|
Use Scenario: Generating isolated 48V bias for optical transceivers in compact access switches and small-cell base stations. IC Role / Device Role / Timing Role: Primary DC/DC controller implementing non-isolated boost topology with 12V input to 48V output at 135mA. Use Value: 2MHz switching enables 6.8µH inductor and 4.7µF ceramic output cap - achieving <100mm² total solution size while maintaining <15mV ripple per typical application circuit. | Use Scenario: Powering CCD/CMOS image sensors and analog front-ends in handheld ultrasound and X-ray detectors. IC Role / Device Role / Timing Role: Negative rail generator (–12V or –15V) from single 3.7V Li-ion cell using inverting topology with FBX referenced to –0.8V. Use Value: 6µA quiescent current extends battery runtime during idle sensor calibration; low-profile DFN fits within 3mm-thick handheld enclosures. |
| Industrial Sensor Node | Automotive Infotainment Display |
Use Scenario: Providing stable 5V or 3.3V from wide-range 9–36V vehicle battery or 24V industrial bus for wireless sensor transceivers. IC Role / Device Role / Timing Role: SEPIC converter enabling regulation even during cold-crank (4.5V) or load-dump (60V) transients without input filtering. Use Value: 60V switch rating and 40V absolute max VIN withstand capability eliminate need for external TVS or pre-regulator - reducing BOM cost and failure points. | Use Scenario: Generating auxiliary 5V rail for touch controller and backlight LED drivers in automotive center-stack displays. IC Role / Device Role / Timing Role: Boost converter stepping up 12V battery to 5V with EN/UVLO configured for 9V–16V system brownout window. Use Value: AEC-Q100 qualification and –40°C to +125°C operation ensure reliability across cabin temperature extremes; DFN thermal pad sustains 1A peak loads during display brightness transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3533EDD#TRPBF | Lower 0.5A switch current, 3.3MHz fSW, no inverting mode support, 2.5µA IQ | Optimized for ultra-small footprint in 3.3V/5V point-of-load; unsuitable for 48V boost or negative rail generation. | Select when board space is paramount and output current ≤500mA; avoid for LT8330EDDB#TRPBF's 1A/60V/48V use cases. |
| MAX17595ATP+T | Higher 2.5A switch, 100V rating, external compensation, 100µA IQ, no integrated soft-start | Targets high-voltage industrial motor drives; requires external loop compensation and UVLO circuitry. | Choose for >60V input or >1A continuous loads; not drop-in due to higher IQ, no Burst Mode, and layout complexity. |
Compared with LTC3533EDD#TRPBF and MAX17595ATP+T, the LT8330EDDB#TRPBF uniquely balances 1A/60V capability, 6µA Burst Mode efficiency, topology flexibility, and AEC-Q100 qualification - making it optimal for space-constrained, battery-sensitive, and automotive-grade 48V/medical boost applications where alternatives trade off current, quiescence, or integration.
Availability
LT8330EDDB#TRPBF is available at Aetrix Electronics and suitable for telecom power supplies, portable medical imaging devices, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for LT8330EDDB#TRPBF 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 precision instrumentation, industrial automation, and automotive safety markets.
The LT8330EDDB#TRPBF belongs to Analog Devices' Power by Linear™ family of monolithic DC/DC converters, designed specifically for high-efficiency, low-quiescent-current power conversion in space- and energy-constrained applications such as portable diagnostics and automotive subsystems.
FAQ
What is the maximum output current achievable with the LT8330EDDB#TRPBF in a 48V boost configuration?
The LT8330EDDB#TRPBF supports up to 135mA output current in the documented 48V boost application (VIN = 12V, VOUT = 48V), limited by its 1A internal switch, thermal design, and inductor saturation current. At higher input voltages (e.g., VIN = 24V), output current capability increases proportionally - but must remain within the 1A peak switch current limit and thermal limits of the DFN package. Derating is required above 85°C ambient.
Can the LT8330EDDB#TRPBF generate a negative output voltage, and how is it configured?
Yes, the LT8330EDDB#TRPBF can generate a negative output voltage using inverting topology. Configuration requires connecting the FBX pin to a resistor divider between VOUT (negative rail) and GND, referencing FBX to the –0.80V internal comparator. The block diagram shows amplifier A2 active in this mode. No external components beyond the divider and phase-lead capacitor are needed - the same LT8330EDDB#TRPBF device supports both polarities.
Does the LT8330EDDB#TRPBF require external compensation components?
No, the LT8330EDDB#TRPBF features fully internal compensation - no external Type II or Type III compensation network is required. Stability is maintained across boost, SEPIC, and inverting topologies using the internal error amplifier and slope compensation. A feed-forward capacitor across the FBX divider may be added for enhanced phase margin in demanding transient applications, but is optional.
What is the role of the NC pin on the LT8330EDDB#TRPBF, and how should it be handled?
The NC pin (Pin 2) on the LT8330EDDB#TRPBF has no internal connection and serves only mechanical and thermal purposes. It must be tied directly to local GND on the PCB to improve thermal conduction, reduce EMI susceptibility, and ensure mechanical stability of the DFN package - leaving it floating risks solder joint reliability and noise coupling.
How does the LT8330EDDB#TRPBF manage thermal performance in high-ambient environments?
The LT8330EDDB#TRPBF achieves θJA = 60°C/W via its exposed thermal pad (Pin 9, GND), which must be soldered to a dedicated PCB ground plane with ≥4 thermal vias. Combined with its 125°C maximum junction temperature rating and thermal lockout (170°C trip), it sustains operation in automotive cabins and industrial enclosures. Layout adherence - especially GND plane area and thermal via count - directly determines real-world thermal headroom.
LT8330EDDB#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive or Negative, Isolation Capable
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.6V, -0.8V
- Voltage - Output (Max):
- 60V (Switch)
- Current - Output:
- 1A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x2)
LT8330EDDB#TRPBF FAQ
1.How can I place an order for LT8330EDDB#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8330EDDB#TRPBF 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 LT8330EDDB#TRPBF reliable?
The price and inventory of LT8330EDDB#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8330EDDB#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8330EDDB#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8330EDDB#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8330EDDB#TRPBF?
LT8330EDDB#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8330EDDB#TRPBF 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 LT8330EDDB#TRPBF?
For technical support, including LT8330EDDB#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8330EDDB#TRPBF requirements.
6.How does Aetrix verify that LT8330EDDB#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8330EDDB#TRPBF 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 LT8330EDDB#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8330EDDB#TRPBF?
All LT8330EDDB#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8330EDDB#TRPBF, 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 LT8330EDDB#TRPBF part is unused and in its original packaging.
Return procedure for LT8330EDDB#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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