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Analog Devices Inc. LT8330IDDB#TRMPBF
- Part No.:
- LT8330IDDB#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8330IDDB#TRMPBF.pdf
- Description:
- IC REG BOOST SEPIC ADJ 1A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,395
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Product details
Overview
LT8330IDDB#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, 6µA quiescent current in Burst Mode, fixed 2MHz switching frequency, and single-pin FBX feedback supporting ± output voltage programming - used in 48V telecom boost supplies and portable medical diagnostics.
For engineers reviewing the LT8330IDDB#TRMPBF datasheet, LT8330IDDB#TRMPBF pinout, LT8330IDDB#TRMPBF application, or LT8330IDDB#TRMPBF equivalent, key selection considerations include ultralow IQ operation down to 6µA, AEC-Q100-qualified DFN package thermal performance, ±0.8V/1.6V FBX regulation thresholds, and 2MHz fixed-frequency control for compact magnetics.
Technical Context
The LT8330IDDB#TRMPBF implements fixed-frequency (2MHz) current-mode control with internal compensation, enabling stable regulation across wide VIN (3V–40V) and VOUT ranges. Its dual-reference FBX architecture (1.6V for positive outputs, –0.8V for negative) allows 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. Integrated soft-start ramps the VC node to limit inrush, while thermal lockout halts switching at 170°C junction temperature and resumes with soft-start after cooldown.
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 or sensor nodes. |
| Switch Rating | 1A, 60V - handles 48V boost conversion up to 135mA output with margin for transient surges. |
| FBX Thresholds | +1.6V / –0.8V - single feedback pin supports both boost/SEPIC (+VOUT) and inverting (–VOUT) topologies. |
| fSW | Fixed 2MHz - permits use of sub-1µH inductors (e.g., 6.8µH in 48V boost reference design), minimizing board area. |
| EN/UVLO Threshold | 1.68V (rising), 1.60V (falling) - precise hysteresis enables reliable input undervoltage lockout for 12V/24V rail monitoring. |
| Package | 8-Lead DFN (3mm × 2mm, 0.75mm height) - AEC-Q100 qualified, exposed pad for low θJA = 60°C/W thermal resistance. |
Pinout & Package
LT8330IDDB#TRMPBF 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 layouts requiring minimal PCB footprint and efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FBX | Feedback input | Accepts +1.6V or –0.8V reference for positive/negative output regulation; determines topology via resistor divider connection. |
| 2 - NC | No internal connection | Must be tied to local ground; no signal routing or bypassing permitted. |
| 3 - SW | Power switch drain | Connects to inductor/diode node; requires minimized trace area to reduce EMI and switching losses. |
| 4 - SW | Power switch drain (dual bond wire) | Parallel path with Pin 3 to lower effective RDS(ON) and improve current sharing under 1A load. |
| 5 - EN/UVLO | Enable and undervoltage detect | Shuts down IC below 1.60V; resumes at 1.68V; draws <1µA when held <0.2V for ultra-low standby power. |
| 6 - INTVCC | Internal 3V LDO output | Supplies gate driver and internal circuitry; requires ≥1µF ceramic bypass to GND; no external loading allowed. |
| 7 - VIN | Main input supply | Accepts 3V–40V; must be locally bypassed with X7R/X5R ceramic capacitor placed adjacent to PIN 7 and GND. |
| 8 - GND | Power and signal ground | Primary ground connection; exposed pad (Pin 9) must be soldered to PCB ground plane for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 6µA input current maintains <15mV output ripple at light loads - critical for battery-powered diagnostic imaging devices. |
| Topology Flexibility | Single FBX pin supports boost, SEPIC, and inverting configurations without changing IC or feedback network - reduces BOM count across product variants. |
| Integrated Soft-Start | 1ms internal ramp limits inrush current during power-up - prevents inductor saturation and protects downstream capacitors in telecom line cards. |
| Frequency Foldback | Reduces fSW when FBX nears GND during startup - avoids minimum on-time violation and ensures controlled VOUT rise in medical equipment. |
| AEC-Q100 Qualified DFN | Rated for –40°C to 125°C junction temperature with validated reliability - suitable for under-hood automotive infotainment power rails. |
Applications
| 48V Telecom Boost Supply | Portable Ultrasound Imaging |
|---|---|
Use Scenario: Generating stable 48V from 12V vehicle battery for PoE++ midspan injectors in mobile base stations. IC Role / Device Role / Timing Role: Primary DC/DC boost controller regulating output with 2MHz fixed-frequency PWM and current-mode loop stability. Use Value: 6µA quiescent current extends backup battery runtime; 60V switch rating accommodates 12V cold-crank transients up to 18V. |
Use Scenario: Powering analog front-end ASICs and ADCs in handheld ultrasound probes requiring clean ±15V rails. IC Role / Device Role / Timing Role: Inverting converter generating –15V from 3.3V system rail using single FBX pin and compact 2MHz magnetics. Use Value: Low 15mV output ripple preserves SNR in RF receive paths; thin DFN package fits within probe's tight mechanical envelope. |
| Industrial Sensor Node | Automotive ADAS Camera Module |
Use Scenario: Long-life wireless sensor node powered by Li-SOCl₂ battery, requiring regulated 3.3V from 3.6V nominal cell. IC Role / Device Role / Timing Role: SEPIC converter maintaining regulation during battery discharge from 3.6V to 2.0V while isolating input/output grounds. Use Value: 6µA IQ enables >15-year shelf life; internal compensation eliminates external compensation components for size-constrained IoT designs. |
Use Scenario: Providing 5V bias to image sensor and 1.2V core supply to ISP in rear-view camera module operating across –40°C to 105°C ambient. IC Role / Device Role / Timing Role: Boost converter stepping 3.3V system rail to 5V, leveraging AEC-Q100 qualification and thermal lockout protection. Use Value: Exposed-pad DFN ensures reliable thermal performance at 125°C junction; EN/UVLO hysteresis prevents brownout oscillation during engine cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8331IDDB#TRMPBF | Higher 2.5A switch rating, same 2MHz fSW, identical pinout and FBX architecture - adds 1.5× current headroom. | Required for >135mA output loads (e.g., multi-sensor fusion modules); otherwise functionally interchangeable. | Select when peak load exceeds 1A or when future-proofing for higher-current derivatives is needed. |
| TPS61088RHLR | 10A switch, 2.5V–12V VIN range, no negative output support, 500kHz–2.2MHz adjustable fSW - wider input but narrower topology scope. | Suitable for high-current 5V/12V boost only; lacks inverting capability and ultralow 6µA IQ. | Choose for cost-sensitive consumer electronics where AEC-Q100 and negative output are not required. |
Compared with LT8330IDDB#TRMPBF, LT8331IDDB#TRMPBF offers scalable current capacity in identical packaging, while TPS61088RHLR trades topology flexibility and ultralow IQ for higher output current and lower unit cost in non-automotive applications.
Availability
LT8330IDDB#TRMPBF is available at Aetrix Electronics and suitable for telecom infrastructure, portable medical diagnostics, and automotive ADAS camera modules requiring stable component supply with long-term lifecycle assurance.
Supply support for LT8330IDDB#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 precision instrumentation, industrial automation, and automotive safety markets.
The LT8330IDDB#TRMPBF belongs to the LT® monolithic DC/DC converter product line, designed specifically for space-constrained, high-efficiency power conversion in battery-powered and automotive-grade systems demanding ultralow quiescent current and robust thermal performance.
FAQ
What is the maximum output current achievable with LT8330IDDB#TRMPBF in a 48V boost configuration?
The LT8330IDDB#TRMPBF supports up to 135mA output current in the documented 48V boost application (VIN = 12V, VOUT = 48V), constrained by its 1A switch current limit, thermal limits of the DFN package, and efficiency derating at high duty cycles. At higher input voltages (e.g., VIN = 24V), output current capability increases proportionally, but must remain within the 1A peak switch current and thermal boundaries defined in the datasheet for LT8330IDDB#TRMPBF.
Does LT8330IDDB#TRMPBF support negative output voltages, and how is it configured?
Yes, LT8330IDDB#TRMPBF supports negative output voltages via inverting converter topology. Configuration requires connecting the FBX pin to a resistor divider between VOUT (negative rail) and GND, referencing the internal –0.8V threshold. The IC automatically selects the appropriate error amplifier path, eliminating need for external mode-select pins or component changes - a key feature confirmed in the LT8330IDDB#TRMPBF datasheet Block Diagram and OPERATION section.
What is the purpose of the dual SW pins (Pins 3 and 4) on LT8330IDDB#TRMPBF?
Pins 3 and 4 on LT8330IDDB#TRMPBF are both bonded to the internal power switch drain node, providing parallel current paths to reduce effective RDS(ON) and improve thermal distribution under 1A load conditions. This dual-pin layout lowers conduction losses and enhances reliability in high-duty-cycle boost applications - explicitly documented in the DDB package pin diagram and Electrical Characteristics table for LT8330IDDB#TRMPBF.
Can LT8330IDDB#TRMPBF be used in automotive applications, and what qualifications does it hold?
Yes, LT8330IDDB#TRMPBF is qualified to AEC-Q100 Grade I (–40°C to +125°C) and specified for automotive use, as confirmed in the ORDER INFORMATION table and PACKAGE DESCRIPTION notes. Its DFN package, thermal lockout protection, and precise EN/UVLO thresholds make it suitable for ADAS camera modules and infotainment power supplies - distinct from non-automotive variants like LT8330EDDB#TRMPBF which lack formal AEC-Q100 certification.
How does LT8330IDDB#TRMPBF achieve 6µA quiescent current, and under what conditions is this value valid?
LT8330IDDB#TRMPBF achieves 6µA quiescent current in Burst Mode operation - a low-ripple pulsed mode active at light loads where the IC delivers brief energy bursts followed by extended sleep periods. This value is measured per Electrical Characteristics table at TA = 25°C, VIN = 12V, with EN/UVLO = 12V and light-load conditions; actual IQ scales with temperature and input voltage but remains ≤10µA over full –40°C to 125°C range per datasheet specifications for LT8330IDDB#TRMPBF.
LT8330IDDB#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, 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)
LT8330IDDB#TRMPBF FAQ
1.How can I place an order for LT8330IDDB#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8330IDDB#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 LT8330IDDB#TRMPBF reliable?
The price and inventory of LT8330IDDB#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8330IDDB#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT8330IDDB#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8330IDDB#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8330IDDB#TRMPBF?
LT8330IDDB#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8330IDDB#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 LT8330IDDB#TRMPBF?
For technical support, including LT8330IDDB#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8330IDDB#TRMPBF requirements.
6.How does Aetrix verify that LT8330IDDB#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT8330IDDB#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 LT8330IDDB#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT8330IDDB#TRMPBF?
All LT8330IDDB#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8330IDDB#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 LT8330IDDB#TRMPBF part is unused and in its original packaging.
Return procedure for LT8330IDDB#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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