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Analog Devices Inc. LT8330HDDB#TRMPBF
- Part No.:
- LT8330HDDB#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
LT8330HDDB#TRMPBF.pdf
- Description:
- IC REG BOOST SEPIC ADJ 1A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,856
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Product details
Overview
LT8330HDDB#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, fixed 2MHz switching frequency, and supports ±40V input range for generating positive or negative output voltages - used in automotive infotainment power rails requiring high efficiency at light loads.
For engineers reviewing the LT8330HDDB#TRMPBF datasheet, LT8330HDDB#TRMPBF pinout, LT8330HDDB#TRMPBF application, or LT8330HDDB#TRMPBF equivalent, key selection criteria include its AEC-Q100-qualified 8-lead DFN package, –40°C to 150°C junction temperature rating, single FBX-pin topology flexibility, and integrated soft-start/frequency foldback for robust start-up under fault conditions.
Technical Context
The LT8330HDDB#TRMPBF employs fixed-frequency (2MHz) current-mode control with dual error amplifiers enabling seamless transition between positive-output (FBX referenced to +1.6V) and negative-output (FBX referenced to –0.8V) configurations. Its internal compensation eliminates external loop components, while frequency foldback activates when FBX approaches GND to prevent inductor current runaway during low-VOUT conditions.
Thermal lockout triggers at 170°C (typical), halting switching and resetting soft-start; recovery occurs after 5°C cooldown. EN/UVLO provides accurate 1.60V turn-on and 1.556V turn-off thresholds with 80mV hysteresis, allowing precise system-level undervoltage protection via resistive divider programming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 40V - supports wide automotive battery transients without external pre-regulation. |
| Quiescent Current (Burst Mode) | 6µA - enables >10-year battery life in always-on vehicle telematics modules. |
| Switch Rating | 1A, 60V - handles 48V boost conversion up to 135mA output with margin for surge currents. |
| Switching Frequency | Fixed 2MHz - permits use of sub-1µH inductors, reducing solution size by >40% vs 500kHz converters. |
| FBX Regulation Voltage | +1.60V (positive VOUT) or –0.80V (negative VOUT) - single feedback pin supports dual-polarity output design without topology change. |
| EN/UVLO Threshold | 1.62V (rising), 1.556V (falling) - enables precise 9V–16V automotive input window with 64mV hysteresis. |
| Operating Junction Temp | –40°C to +150°C - qualified for under-hood automotive applications per AEC-Q100 Grade H. |
Pinout & Package
LT8330HDDB#TRMPBF uses an 8-lead (3mm × 2mm) plastic DFN package with exposed thermal pad (Pin 9, GND) requiring PCB soldering for thermal performance (θJA = 60°C/W). The package is AEC-Q100 qualified and rated for –40°C to +150°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FBX | Voltage regulation feedback | Single pin accepts +1.6V or –0.8V reference to configure boost/SEPIC (+VOUT) or inverting (–VOUT) topologies. |
| 2 - NC | No internal connection | Must be tied to local ground to minimize noise coupling; no functionality or signal path. |
| 3 - SW | Internal power switch drain | High dv/dt node; requires minimized trace area and tight layout to reduce EMI and switching losses. |
| 4 - SW | Internal power switch drain (dual bond wire) | Second SW connection reduces RDS(ON) and improves thermal distribution across package. |
| 5 - EN/UVLO | Enable and undervoltage lockout input | Logic-controlled shutdown or programmable UVLO threshold using external resistor divider. |
| 6 - INTVCC | Internally regulated 3V supply | Bypassed with ≥1µF ceramic capacitor; no external loading permitted - powers gate driver and internal logic. |
| 7 - VIN | Main input supply | Requires local 4.7µF ceramic bypass capacitor placed adjacent to pin; supports 3V–40V input range. |
| 8 - GND | Power and signal ground | Connected to exposed thermal pad (Pin 9); must be soldered to large copper pour for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 6µA input current at light load maintains >85% efficiency down to 1mA output, critical for always-on automotive modules. |
| Topology Flexibility | Single FBX pin supports boost, SEPIC, and inverting configurations without changing IC - reduces BOM count and design iterations. |
| Integrated Soft-Start | 1ms controlled VC ramp limits inrush current during startup, preventing inductor saturation and output overshoot in 48V boost applications. |
| Frequency Foldback | Reduces switching frequency when FBX nears GND (e.g., short-circuit or cold-start), extending off-time to maintain stable current limiting. |
| AEC-Q100 Qualified | DFN package meets Grade H (–40°C to +150°C) requirements - validated for engine control, ADAS camera power, and infotainment systems. |
Applications
| Automotive Infotainment Power | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Generating isolated ±15V rails for analog front-end op-amps in vehicle head-unit audio codecs. IC Role / Device Role / Timing Role: Inverting converter delivering –15V from 12V battery with <15mV ripple in Burst Mode. Use Value: 6µA quiescent current extends battery backup runtime; AEC-Q100 qualification ensures reliability over 15-year vehicle lifecycle. |
Use Scenario: Boosting 3.3V MCU supply to 24V for driving industrial solenoid valves in PLC I/O modules. IC Role / Device Role / Timing Role: Boost converter operating at 2MHz to minimize inductor size in space-constrained DIN-rail enclosures. Use Value: Fixed 2MHz frequency enables use of 1.0µH inductor (vs 10µH at 500kHz), cutting solution volume by 65%. |
| Portable Medical Diagnostic Imaging | Telecom Remote Radio Unit (RRU) |
Use Scenario: Generating –5V bias for CCD image sensors in handheld ultrasound probes powered by Li-ion batteries. IC Role / Device Role / Timing Role: Inverting regulator with single FBX pin simplifying feedback network versus dual-supply alternatives. Use Value: Low 15mV output ripple prevents noise coupling into analog imaging chain; 1A switch supports peak sensor burst currents. |
Use Scenario: Providing 48V intermediate bus from 24V telecom chassis supply for GaN PA bias in 5G small cells. IC Role / Device Role / Timing Role: SEPIC converter maintaining regulation during 24V input dips to 18V during brownout events. Use Value: Wide 3V–40V input range and frequency foldback ensure continuous operation during transient line sags without reset. |
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#TRMPBF | Higher 2.5A switch rating, same 2MHz frequency and FBX topology flexibility; wider 2.8V–40V VIN range. | Supports higher output current (up to 300mA at 48V) but larger solution size due to increased thermal mass. | Select when >135mA output current or lower input voltage (down to 2.8V) is required; not drop-in due to different current limit and EN threshold. |
| TPS61088RHLR | 10A switch, 2.5V–12V input, no negative output capability; 2.5MHz switching, 40µA IQ in light-load mode. | Limited to boost-only operation; lacks FBX polarity flexibility and automotive temp grade. | Choose for high-current (>200mA), non-automotive applications where negative rail generation is unnecessary and cost is prioritized. |
Compared with LT8330HDDB#TRMPBF, LT8331EDDB#TRMPBF offers higher current capacity but sacrifices some light-load efficiency, while TPS61088RHLR provides greater peak current at the expense of topology flexibility and automotive qualification - making LT8330HDDB#TRMPBF optimal for space-constrained, dual-polarity, AEC-Q100-compliant designs.
Availability
LT8330HDDB#TRMPBF is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor interfaces, portable medical diagnostics, and telecom remote radio units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8330HDDB#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 since 1965.
The LT8330 series is designed for compact, high-efficiency DC/DC conversion in harsh environments - specifically targeting automotive, medical, and industrial applications needing ultralow IQ, wide input range, and topology flexibility in miniature packages.
FAQ
What is the maximum output current achievable with LT8330HDDB#TRMPBF in a 48V boost application?
The LT8330HDDB#TRMPBF supports up to 135mA output current in the 48V boost configuration shown in the datasheet's typical application (VIN = 12V → VOUT = 48V). This is constrained by the 1A switch current limit, thermal limits of the DFN package at 150°C junction temperature, and efficiency derating above 100mA due to conduction losses. Higher currents require forced air cooling or reduced ambient temperature.
Does LT8330HDDB#TRMPBF support negative output voltage generation, and how is it configured?
Yes, LT8330HDDB#TRMPBF supports negative output voltage generation in 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 threshold. The datasheet specifies R1 = R2 × (|VOUT|/0.80V – 1), and amplifier A2 becomes active while A1 is disabled - confirmed in the block diagram and OPERATION section.
Is LT8330HDDB#TRMPBF pin-compatible with other LT8330 variants like LT8330EDDB#TRMPBF?
Yes, LT8330HDDB#TRMPBF shares identical pinout, footprint, and electrical interface with all DFN-package LT8330 variants (EDDB/IDDB/JDDB/HDDB), including LT8330EDDB#TRMPBF. Differences are limited to temperature grade (–40°C to 150°C for HDDB vs –40°C to 125°C for EDDB) and AEC-Q100 qualification status - no PCB layout changes are needed for substitution within the same package type.
What is the purpose of the dual SW pins (Pins 3 and 4) on LT8330HDDB#TRMPBF?
Pins 3 and 4 on LT8330HDDB#TRMPBF are both connected to the internal power switch drain (SW node) via separate bond wires. This dual-pin configuration reduces effective RDS(ON) and improves current sharing, lowering conduction losses and enhancing thermal distribution across the DFN package - critical for sustaining 1A continuous switch current at 150°C junction temperature.
Can LT8330HDDB#TRMPBF operate without an external compensation network?
Yes, LT8330HDDB#TRMPBF features fully internal compensation, eliminating the need for external Type-II or Type-III compensation networks. The datasheet confirms "internal compensation" in FEATURES and states in APPLICATIONS INFORMATION that "the LT8330 is internally compensated." This simplifies design and improves stability across input/output conditions without tuning external components.
LT8330HDDB#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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (3x2)
LT8330HDDB#TRMPBF FAQ
1.How can I place an order for LT8330HDDB#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8330HDDB#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 LT8330HDDB#TRMPBF reliable?
The price and inventory of LT8330HDDB#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8330HDDB#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT8330HDDB#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8330HDDB#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8330HDDB#TRMPBF?
LT8330HDDB#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8330HDDB#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 LT8330HDDB#TRMPBF?
For technical support, including LT8330HDDB#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8330HDDB#TRMPBF requirements.
6.How does Aetrix verify that LT8330HDDB#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT8330HDDB#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 LT8330HDDB#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT8330HDDB#TRMPBF?
All LT8330HDDB#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8330HDDB#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 LT8330HDDB#TRMPBF part is unused and in its original packaging.
Return procedure for LT8330HDDB#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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