My Inquiry
My Account
Analog Devices Inc. LT8330EDDB#PBF
- Part No.:
- LT8330EDDB#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8330EDDB#PBF.pdf
- Description:
- IC REG BOOST SEPIC ADJ 1A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,828
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT8330EDDB#PBF from Analog Devices is a current-mode DC/DC converter IC capable of boost, SEPIC, or inverting configurations with a 1A/60V internal power switch, 6µA quiescent current, fixed 2MHz switching frequency, and single-pin programmable positive/negative output regulation - used in space-constrained 48V telecom and portable medical power supplies.
For engineers reviewing the LT8330EDDB#PBF datasheet, LT8330EDDB#PBF pinout, LT8330EDDB#PBF application, or LT8330EDDB#PBF equivalent, key selection considerations include ultralow IQ operation, AEC-Q100-qualified DFN package thermal performance, EN/UVLO threshold accuracy (±20mV), FBX dual-reference capability (1.6V/–0.8V), and minimum on/off-time constraints for CCM/DCM boundary design.
Technical Context
The LT8330EDDB#PBF implements fixed-frequency (2MHz) current-mode control with internal slope compensation and dual error amplifiers - one active for positive-output (FBX = 1.6V reference) and the other for negative-output (FBX = –0.8V reference) topologies. Its architecture supports seamless reconfiguration between boost, SEPIC, and inverting modes without external component changes.
Frequency foldback activates when FBX voltage drops near GND during startup or fault conditions, extending off-time to prevent inductor current runaway; soft-start ramps the VC node to limit peak inductor current; and thermal lockout halts switching at 170°C junction temperature with automatic recovery after 5°C cooldown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 3V to 40V - supports wide-input industrial and automotive battery-supplied systems |
| IQ (Sleep Mode) | 6µA - enables >10-year battery life in always-on IoT sensors and portable diagnostics |
| Switch Rating | 1A continuous, 60V max - handles 48V boost conversion up to 135mA output with margin |
| fSW | 2MHz ±15% - permits use of sub-1µH inductors and compact ceramic output caps |
| FBX Reference | 1.60V (positive) or –0.80V (negative) - single feedback pin supports both polarities without topology change |
| EN/UVLO Threshold | 1.68V (rising), 1.60V (falling), 80mV hysteresis - enables precise input undervoltage protection with resistor divider |
| Package | 8-Lead DFN (3mm × 2mm, 0.75mm height), exposed pad grounded - θJA = 60°C/W, AEC-Q100 qualified |
Pinout & Package
LT8330EDDB#PBF 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 low thermal resistance (θJA = 60°C/W) in high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FBX | Feedback input | Accepts resistor divider from VOUT; selects 1.6V (positive) or –0.8V (negative) regulation reference |
| 2 - NC | No connection | Internally unconnected; must be tied to local GND for mechanical stability |
| 3 - SW | Power switch drain | Connects to inductor/diode node; requires minimal trace area to reduce EMI |
| 4 - SW | Power switch drain (dual bond) | Second SW terminal for lower parasitic inductance in high-frequency operation |
| 5 - EN/UVLO | Enable/undervoltage detect | 1.6V threshold enables UVLO programming; <0.2V reduces VIN current to <1µA |
| 6 - INTVCC | Internal 3V LDO output | Bypass with ≥1µF ceramic cap; no external loading permitted |
| 7 - VIN | Main input supply | Must be locally bypassed with 4.7–10µF X7R/X5R ceramic capacitor |
| 8 - GND | Signal and power ground | Connected to exposed thermal pad (Pin 9); requires solid copper pour for thermal management |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 6µA in Burst Mode - extends battery runtime in always-on portable medical devices |
| Dual-polarity output support | Single FBX pin with 1.6V/–0.8V references - eliminates need for separate ICs in bipolar rail generation |
| Integrated soft-start | 1ms ramp time - prevents inrush current damage to output capacitors and load circuitry |
| Frequency foldback | Reduces fSW when FBX ≈ GND - avoids minimum on-time violation during startup or short-circuit recovery |
| AEC-Q100 qualification | Grade I (–40°C to +125°C) - validated for automotive infotainment and ADAS auxiliary power rails |
Applications
| 48V Telecom Power Supply | Portable Ultrasound Imaging |
|---|---|
Use Scenario: Generating isolated 48V bias from 12V vehicle battery for PoE-powered telecom modules in mobile base stations. IC Role / Device Role / Timing Role: Primary DC/DC controller implementing non-isolated boost topology with 2MHz switching and 6µA sleep current. Use Value: Enables compact, fanless enclosure design while maintaining >85% efficiency at 100mA load and <15mV ripple per typical application. | Use Scenario: Providing stable ±15V analog front-end rails and +48V transducer driver voltage in handheld ultrasound units powered by Li-ion batteries. IC Role / Device Role / Timing Role: Dual-rail generator using inverting and boost configurations from single LT8330EDDB#PBF with shared FBX and SW pins. Use Value: Reduces BOM count by 2x vs discrete solutions while meeting stringent low-noise and low-power requirements of medical-grade signal chains. |
| Industrial Sensor Node | Automotive Infotainment Display Backlight |
Use Scenario: Powering ultra-low-power wireless sensor nodes (LoRaWAN/Zigbee) operating from coin-cell or energy-harvesting sources. IC Role / Device Role / Timing Role: High-efficiency step-up regulator delivering 3.3V from 1.8–3.0V input, leveraging Burst Mode for µA-level standby draw. Use Value: Achieves >90% efficiency down to 100µA load and maintains 6µA IQ - enabling multi-year deployment without battery replacement. | Use Scenario: Driving LED backlight strings in automotive center-stack displays requiring stable 36V from 9–16V battery input. IC Role / Device Role / Timing Role: Boost converter with EN/UVLO programmed for cold-crank immunity (start-up only above 9.5V). Use Value: AEC-Q100 qualification ensures reliability across –40°C to +125°C junction range; 2MHz operation minimizes EMI interference with display timing signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8331EDDB#PBF | Includes integrated 1.2A switch, higher current rating, same pinout and FBX dual-reference architecture | Better suited for >135mA output loads; identical layout compatibility | Select when output current exceeds 135mA or higher switch SOA margin is required |
| TPS61088RHLR | 10A switch, 2.7–12V input, no negative output support, 500kHz–2.2MHz adjustable fSW | Lacks inverting mode and ultralow IQ; optimized for high-current consumer power banks | Choose only for high-current boost-only designs where 6µA IQ and bipolar outputs are not needed |
Compared with LT8330EDDB#PBF, LT8331EDDB#PBF offers higher current headroom in identical footprint, while TPS61088RHLR trades bipolar capability and ultralow IQ for raw output current - making LT8330EDDB#PBF uniquely suited for space- and power-constrained dual-polarity applications.
Availability
LT8330EDDB#PBF is available at Aetrix Electronics and suitable for telecom infrastructure, portable medical equipment, and automotive infotainment systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LT8330EDDB#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 precision instrumentation, industrial automation, and communications markets.
The LT8330EDDB#PBF belongs to the LT® monolithic DC/DC converter product line, designed specifically for high-efficiency, ultralow-quiescent-current power conversion in space-constrained and battery-sensitive applications.
FAQ
What is the maximum output current achievable with LT8330EDDB#PBF in boost configuration?
The LT8330EDDB#PBF supports up to 135mA output current in the 48V boost application shown in the datasheet (VIN = 12V → VOUT = 48V), limited by its 1A switch current rating, thermal dissipation in the DFN package, and inductor saturation current. At higher input voltages or lower output voltages, output current can increase - e.g., ~300mA is feasible at VIN = 24V → VOUT = 48V with proper thermal design and component selection.
Does LT8330EDDB#PBF support negative output voltage generation?
Yes, the LT8330EDDB#PBF natively supports negative output voltage generation in inverting topology using the same FBX pin, which references –0.80V internally. A resistor divider from VOUT to GND sets the magnitude, and no external topology change is required - only the feedback network polarity differs from boost/SEPIC modes.
What is the purpose of the dual SW pins (Pins 3 and 4) on LT8330EDDB#PBF?
Pins 3 and 4 on the LT8330EDDB#PBF are both bonded to the internal power switch drain node. This dual-pin configuration reduces effective bond wire inductance and improves high-frequency switching performance, lowering EMI and enhancing efficiency at 2MHz operation - especially critical in compact, noise-sensitive applications like medical imaging.
Can LT8330EDDB#PBF be used in automotive applications?
Yes, the LT8330EDDB#PBF is AEC-Q100 qualified (Grade I, –40°C to +125°C) and specified for automotive use. It features accurate EN/UVLO thresholds for cold-crank immunity, thermal lockout at 170°C, and robust operation across wide input transients - making it suitable for infotainment, ADAS auxiliary rails, and body electronics power supplies.
How does frequency foldback improve startup reliability in LT8330EDDB#PBF?
Frequency foldback in the LT8330EDDB#PBF reduces switching frequency when FBX voltage is near GND (e.g., during soft-start or output short), extending off-time to allow inductor current to fully decay each cycle. This prevents current runaway caused by minimum on-time limitations - ensuring stable startup into heavy or shorted loads without external compensation.
LT8330EDDB#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Ratiometric, Step-Up/Step-Down
- Output Configuration:
- Positive or Negative
- 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#PBF FAQ
1.How can I place an order for LT8330EDDB#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8330EDDB#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 LT8330EDDB#PBF reliable?
The price and inventory of LT8330EDDB#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8330EDDB#PBF is usually 5 days.
3.What payment methods are accepted for LT8330EDDB#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8330EDDB#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8330EDDB#PBF?
LT8330EDDB#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8330EDDB#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 LT8330EDDB#PBF?
For technical support, including LT8330EDDB#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8330EDDB#PBF requirements.
6.How does Aetrix verify that LT8330EDDB#PBF is sourced from the original manufacturer or authorized distributors?
All LT8330EDDB#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 LT8330EDDB#PBF meets industry standards.
7.What is the process for return or replacement of LT8330EDDB#PBF?
All LT8330EDDB#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8330EDDB#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 LT8330EDDB#PBF part is unused and in its original packaging.
Return procedure for LT8330EDDB#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT8330EDDB#PBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
