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Analog Devices Inc. LT8330EDDB#TRMPBF
- Part No.:
- LT8330EDDB#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8330EDDB#TRMPBF.pdf
- Description:
- IC REG BOOST SEPIC ADJ 1A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:829
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Product details
Overview
LT8330EDDB#TRMPBF from Analog Devices is a current-mode DC/DC converter IC configured as a boost, SEPIC, or inverting regulator with a 1A, 60V internal power switch. It delivers ultralow 6µA quiescent current in Burst Mode, supports ±40V input range, and generates positive or negative output voltages using a single FBX feedback pin - ideal for space-constrained industrial sensor nodes requiring stable 48V bias rails.
For engineers reviewing the LT8330EDDB#TRMPBF datasheet, LT8330EDDB#TRMPBF pinout, LT8330EDDB#TRMPBF application, or LT8330EDDB#TRMPBF equivalent, key selection factors include its 2MHz fixed switching frequency, AEC-Q100-qualified DFN package, integrated soft-start/frequency foldback, and dual-regulation capability (1.6V for positive, –0.8V for negative outputs) enabling flexible topology reuse across low-power telecom and medical diagnostic subsystems.
Technical Context
The LT8330EDDB#TRMPBF employs fixed-frequency (2MHz), current-mode control with dual error amplifiers - one active for positive-output (FBX = +1.6V reference) and the other for negative-output (FBX = –0.8V reference) configurations. Its internal VC node servo loop adjusts peak switch current to maintain regulation under varying line/load conditions.
Frequency foldback activates when FBX approaches GND (e.g., during startup or fault), reducing switching frequency to extend off-time and prevent inductor current runaway. Thermal lockout halts switching at 170°C junction temperature, resuming only after 5°C cooldown with full soft-start reinitialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 40V - supports wide industrial input rails including 12V, 24V, and 36V systems without external pre-regulation. |
| Quiescent Current (Burst Mode) | 6µA - enables >10-year battery life in always-on IoT sensors and portable medical devices. |
| Switch Rating | 1A continuous, 60V breakdown - handles 48V boost conversion (e.g., 12V→48V @ 135mA) with margin for transient overvoltage. |
| Feedback Reference | +1.60V (positive VOUT) or –0.80V (negative VOUT) - single FBX pin eliminates topology-specific feedback networks. |
| Switching Frequency | Fixed 2MHz - allows use of sub-1µH inductors (e.g., 0.68µH–6.8µH), minimizing solution size and EMI filter complexity. |
| EN/UVLO Threshold | Rising: 1.68V, Falling: 1.60V (80mV hysteresis) - enables precise system-level undervoltage lockout via resistor divider on VIN. |
| Operating Temperature | –40°C to +125°C junction - qualified for industrial and automotive under-hood environments (non-AEC-Q100 variant). |
Pinout & Package
LT8330EDDB#TRMPBF uses an 8-lead (3mm × 2mm) plastic DFN package with exposed thermal pad (Pin 9, GND). The package is 0.75mm low-profile and AEC-Q100 qualified for automotive reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FBX | Feedback Input | Single pin accepts voltage divider from VOUT to GND; selects +1.6V or –0.8V internal reference based on polarity. |
| 2 - NC | No Internal Connection | Must be tied to local ground for mechanical stability and EMI reduction. |
| 3 - SW | Power Switch Output | Drives external inductor/diode; requires minimized trace area to reduce radiated EMI. |
| 4 - SW | Power Switch Output (Dual Bond Wire) | Second SW connection reduces parasitic inductance and improves current sharing in high-frequency operation. |
| 5 - EN/UVLO | Enable / Undervoltage Lockout | Logic-controlled shutdown or programmable UVLO threshold (1.60V/1.68V) with 80mV hysteresis. |
| 6 - INTVCC | Internal 3V Regulator Output | Bypassed with ≥1µF ceramic capacitor; powers gate driver and internal circuitry - no external loading permitted. |
| 7 - VIN | Main Input Supply | Requires local 4.7µF–10µF X7R/X5R ceramic bypass capacitor placed adjacent to pin. |
| 8 - GND | Ground Reference | Primary ground connection; exposed pad (Pin 9) must be soldered to PCB ground plane for thermal and electrical performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 6µA input current at light load preserves battery life while maintaining <15mV output ripple - critical for always-on remote sensors. |
| Dual-Polarity Regulation | Single FBX pin supports both boost/SEPIC (+VOUT) and inverting (–VOUT) topologies - reduces BOM count and design iterations. |
| Integrated Soft-Start & Foldback | 1ms soft-start ramp and FBX-triggered frequency foldback prevent inrush current and inductor saturation during startup/fault recovery. |
| 2MHz Fixed Switching | Enables compact magnetics (e.g., 2.2µH) and small ceramic capacitors - achieves <25mm² total solution size for 48V/135mA output. |
| AEC-Q100 Qualified DFN | 8-lead (3mm × 2mm) DFN package meets automotive reliability standards - suitable for infotainment, ADAS camera modules, and body electronics. |
Applications
| Industrial Sensor Power | Telecom Bias Supply |
|---|---|
Use Scenario: Powering isolated 4–20mA transmitters and MEMS pressure sensors in factory automation cabinets with 24V DC input. IC Role / Device Role / Timing Role: Boost converter generating stable 48V output from 24V rail to drive high-side current sources and analog front-ends. Use Value: 6µA quiescent current extends maintenance-free operation beyond 15 years; 2MHz switching minimizes EMI interference with sensitive analog signal paths. |
Use Scenario: Providing regulated ±12V or +48V bias for optical transceivers and line-card PHYs in access network equipment. IC Role / Device Role / Timing Role: Inverting or SEPIC regulator delivering low-noise, tightly regulated output despite wide input variation (e.g., 36–57V telecom -48V nominal). Use Value: Internal compensation and 1.6V/–0.8V references eliminate external compensation components - reducing layout sensitivity and qualification time. |
| Portable Medical Imaging | Automotive Camera Module |
Use Scenario: Generating ±5V or +15V for CCD/CMOS image sensor bias and analog signal chain in handheld ultrasound probes. IC Role / Device Role / Timing Role: Inverting converter producing negative rail from single-cell Li-ion (3.0–4.2V) input to power op-amps and ADC drivers. Use Value: Low-profile DFN package (0.75mm height) fits within slim probe housings; Burst Mode maintains efficiency down to µA-level standby loads. |
Use Scenario: Supplying 5V or 12V for image sensor, ISP, and serializer in rear-view or surround-view cameras mounted near vehicle exterior. IC Role / Device Role / Timing Role: Boost converter stepping up 5V USB-C or 12V vehicle bus to 28V for LED flash or 48V for high-resolution sensors. Use Value: AEC-Q100 qualification ensures robustness against thermal cycling and vibration; frequency foldback prevents latch-up during cold-crank events. |
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#TRMPBF | Lower 0.5A switch rating, 1.5MHz switching, no negative-output capability - lacks FBX dual-reference architecture. | Suitable only for low-current boost applications (<100mA); cannot replace LT8330EDDB#TRMPBF in inverting or high-voltage boost designs. | Select when cost-sensitive, lower-power 12V→24V bias is needed and negative rail generation is unnecessary. |
| MAX17542ATP+T | Higher 2.5A switch, 400kHz–2.2MHz adjustable frequency, requires external compensation - no integrated soft-start or frequency foldback. | Supports higher output power but demands more design effort; not optimized for ultralow-IQ or fast transient response. | Choose for high-current (>500mA) applications where board space is less constrained and programmability outweighs simplicity. |
Compared with LTC3533EDD#TRMPBF and MAX17542ATP+T, the LT8330EDDB#TRMPBF uniquely combines ultralow 6µA IQ, dual-polarity regulation, and AEC-Q100-qualified packaging - making it the only option for compact, battery-powered, or automotive-grade systems requiring both positive and negative rails from a single IC.
Availability
LT8330EDDB#TRMPBF is available at Aetrix Electronics and suitable for industrial sensor nodes, telecom bias supplies, portable medical imaging, automotive camera modules, and low-power test equipment requiring stable component supply with long-term lifecycle assurance.
Supply support for LT8330EDDB#TRMPBF 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 LT8330 product line delivers highly integrated, low-quiescent-current DC/DC converters targeting space- and power-constrained applications such as battery-operated instrumentation, remote sensors, and automotive subsystems requiring reliable voltage conversion with minimal external components.
FAQ
What is the maximum output voltage achievable with LT8330EDDB#TRMPBF in boost configuration?
The LT8330EDDB#TRMPBF supports output voltages up to 60V in boost mode, limited by its 60V-rated internal switch and absolute maximum SW pin rating. Practical maximums depend on input voltage, duty cycle constraints, and diode/inductor ratings - e.g., 12V input can reliably generate 48V at 135mA per the typical application. Exceeding 60V risks permanent damage to the SW node.
Does LT8330EDDB#TRMPBF require external compensation components?
No, the LT8330EDDB#TRMPBF features fully internal compensation, eliminating the need for external Type-II or Type-III compensation networks. This simplifies layout and improves stability across operating conditions. However, a feed-forward capacitor across the FBX divider may be added for enhanced phase margin in demanding transient scenarios.
Can LT8330EDDB#TRMPBF generate negative output voltages?
Yes, the LT8330EDDB#TRMPBF is explicitly designed for negative-output inverting configurations using the same FBX pin. When the FBX voltage is pulled below GND (e.g., via resistor divider from –VOUT to GND), the internal –0.80V reference engages, enabling stable regulation of negative rails such as –5V, –12V, or –15V from positive inputs.
What is the thermal performance difference between LT8330EDDB#TRMPBF and TSOT-23 variants?
The LT8330EDDB#TRMPBF's 8-lead DFN package has θJA = 60°C/W, significantly better than the 6-lead TSOT-23's θJA = 125°C/W. Its exposed thermal pad (Pin 9) must be soldered to a PCB ground plane to achieve this rating - enabling 1.2W power dissipation at 125°C ambient versus ~0.6W for TSOT-23, critical for sustained 1A switching.
Is LT8330EDDB#TRMPBF pin-compatible with other LT8330 variants?
No - LT8330EDDB#TRMPBF (8-lead DFN) is not pin-compatible with LT8330ES6#TRMPBF (6-lead TSOT-23). Pin counts, layouts, and terminal assignments differ: DFN has dual SW pins and NC, while TSOT-23 consolidates functions into 6 pins. PCB redesign is required when migrating between packages.
LT8330EDDB#TRMPBF 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
- 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#TRMPBF FAQ
1.How can I place an order for LT8330EDDB#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8330EDDB#TRMPBF 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#TRMPBF reliable?
The price and inventory of LT8330EDDB#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8330EDDB#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT8330EDDB#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8330EDDB#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8330EDDB#TRMPBF?
LT8330EDDB#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8330EDDB#TRMPBF 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#TRMPBF?
For technical support, including LT8330EDDB#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8330EDDB#TRMPBF requirements.
6.How does Aetrix verify that LT8330EDDB#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT8330EDDB#TRMPBF 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#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT8330EDDB#TRMPBF?
All LT8330EDDB#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8330EDDB#TRMPBF, 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#TRMPBF part is unused and in its original packaging.
Return procedure for LT8330EDDB#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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