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Analog Devices Inc. LT8330IS6#TRMPBF
- Part No.:
- LT8330IS6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LT8330IS6#TRMPBF.pdf
- Description:
- IC REG BST SEPIC ADJ 1A TSOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LT8330IS6#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 regulated outputs using a single FBX feedback pin - ideal for space-constrained industrial sensors and portable medical diagnostics requiring high light-load efficiency.
For engineers reviewing the LT8330IS6#TRMPBF datasheet, LT8330IS6#TRMPBF pinout, LT8330IS6#TRMPBF application, or LT8330IS6#TRMPBF equivalent, key selection criteria include its 2MHz fixed switching frequency, –40°C to 125°C operating junction temperature, TSOT-23-6 package footprint, and dual-mode (positive/negative) output programming capability without external compensation.
Technical Context
The LT8330IS6#TRMPBF employs fixed-frequency (2MHz), current-mode control with internal slope compensation and dual error amplifiers - one active for positive-output (1.6V FBX reference) and the other for negative-output (–0.8V FBX reference) configurations. Its frequency foldback activates when FBX approaches GND during startup or fault conditions, extending off-time to prevent inductor current runaway.
It integrates soft-start via controlled VC-node ramping, thermal lockout at 170°C (with 5°C hysteresis), and EN/UVLO with precise 1.60V turn-off and 1.68V turn-on thresholds (80mV hysteresis). The INTVCC LDO supplies 3V internally and requires ≥1µF ceramic bypassing; no external loading is permitted on this pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 40V - supports wide industrial input rails including 12V and 24V systems without pre-regulation. |
| Quiescent Current (Burst Mode) | 6µA - enables multi-year battery life in always-on IoT sensor nodes and portable diagnostic devices. |
| Switch Rating | 1A, 60V - handles peak currents up to 1.4A transiently and supports 48V boost outputs (e.g., 12V→48V @ 135mA) with margin. |
| Switching Frequency | Fixed 2MHz - allows use of sub-1µH inductors (e.g., 0.68µH–10µH), minimizing solution size and EMI filter area. |
| FBX Reference Voltage | +1.60V or –0.80V - enables single-pin programmable polarity: R1/R2 divider sets VOUT = 1.6×(1+R1/R2) or |VOUT| = 0.8×(1+R1/R2). |
| EN/UVLO Threshold | 1.60V (falling), 1.68V (rising) - provides accurate, hysteresis-stabilized input undervoltage protection for system-level brownout management. |
| Operating Temperature | –40°C to +125°C junction - qualified for extended industrial and automotive under-hood environments (I-grade). |
Pinout & Package
LT8330IS6#TRMPBF uses the 6-lead Plastic TSOT-23 package (0.95mm height, 2.9mm × 1.6mm footprint), optimized for thermal performance with θJA = 125°C/W. Pin 2 (GND) must be soldered to a PCB ground plane for reliable operation and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Supply Rail | Accepts 3V–40V; requires local 4.7µF ceramic bypass placed adjacent to VIN and GND pins to suppress high-frequency ripple. |
| INTVCC | Internally Regulated 3V Supply | Powers internal circuitry; must be bypassed with ≥1µF low-ESR ceramic capacitor to GND - no external load permitted. |
| EN/UVLO | Enable & Undervoltage Lockout Input | Logic-controlled shutdown; 1.60V/1.68V thresholds enable precise system input voltage monitoring and sequencing. |
| SW | Internal Power Switch Drain | Connects to inductor and diode anode; trace must be short and low-area to minimize EMI and parasitic ringing. |
| GND | Power and Signal Ground Reference | Primary return path; Pin 2 connects to exposed die pad - must be soldered to large copper ground plane for thermal and noise integrity. |
| FBX | Feedback Input for Output Regulation | Serves dual reference: +1.60V for boost/SEPIC, –0.80V for inverting topology - eliminates need for external op-amp or polarity-select logic. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ Burst Mode | 6µA quiescent current maintains <15mV output ripple while enabling >10-year battery life in always-on applications. |
| Single-Pin Polarity Selection | FBX pin automatically selects +1.60V or –0.80V reference based on external resistor divider connection - no mode pins or configuration registers required. |
| Integrated Soft-Start | 1ms internal soft-start ramps VC node to limit inrush current and prevent inductor saturation during power-up or fault recovery. |
| Frequency Foldback Protection | Reduces switching frequency when FBX nears GND - prevents duty-cycle violation and inductor current runaway during startup or short-circuit events. |
| Thermal Lockout with Hysteresis | Shuts down at 170°C junction temperature and resumes only after 5°C cooldown - protects against sustained overtemperature stress without latch-up. |
Applications
| Industrial Sensor Nodes | Portable Medical Diagnostics |
|---|---|
Use Scenario: Battery-powered gas or pressure sensor modules operating continuously in remote locations with minimal maintenance. IC Role / Device Role / Timing Role: Primary DC/DC regulator generating stable 5V or 12V rail from 3.6V Li-ion, or –5V bias for analog front-end op-amps. Use Value: 6µA IQ extends battery life beyond 10 years; 2MHz switching enables compact 0805-size inductors and reduces PCB area by >40% vs. 500kHz alternatives. | Use Scenario: Handheld ultrasound or point-of-care blood analyzers requiring isolated bipolar supplies for ADC drivers and signal conditioning. IC Role / Device Role / Timing Role: Inverting converter generating –5V from 3.3V system rail, or boost converter delivering 24V for piezoelectric transducer bias. Use Value: Single FBX pin simplifies layout and firmware; internal compensation eliminates loop stability tuning; –40°C to 125°C rating ensures reliability across clinical environments. |
| Automotive Body Electronics | Telecom Remote Units |
Use Scenario: LED lighting control modules or window lift ECUs powered directly from 12V battery with cold-crank tolerance down to 3V. IC Role / Device Role / Timing Role: Boost converter maintaining 5V microcontroller supply during engine start, or SEPIC for constant output during load-dump transients. Use Value: 40V absolute max VIN and 60V switch withstand 12V automotive transients; I-grade temp range meets AEC-Q100 requirements for non-safety-critical modules. | Use Scenario: Small-cell base station remote radio units deployed in outdoor cabinets with limited thermal headroom and wide ambient temperature swings. IC Role / Device Role / Timing Role: 48V intermediate bus generation from 24V backup supply, or negative bias for RF amplifier stages. Use Value: 2MHz operation minimizes magnetic component size and weight; low-profile TSOT-23 package fits dense RF layouts; 125°C operation sustains performance at cabinet temperatures up to 85°C ambient. |
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 current; 3MHz switching; no negative output capability; requires external compensation. | Optimized for ultra-compact 3.3V/5V step-up only; unsuitable for inverting or high-current (>500mA) loads. | Select when board space is critical and output polarity is fixed positive; avoid for bipolar or >600mA applications. |
| TPS61088RHLR | 10A switch; 2.5V–12V input; no negative output; higher 12µA IQ; requires external compensation and soft-start capacitor. | Targeted at high-power USB PD and display backlighting; lacks UVLO precision and low-IQ optimization for battery longevity. | Choose for high-current boost where efficiency >90% at >1A matters most; not recommended for low-power, long-life, or inverting designs. |
Compared with LTC3533EDD#TRMPBF and TPS61088RHLR, the LT8330IS6#TRMPBF uniquely combines ultralow 6µA IQ, dual-polarity output support, internal compensation, and 1A/60V switch in a thermally robust TSOT-23 package - making it the optimal choice for battery-sensitive, space-constrained, and functionally flexible industrial and medical power designs.
Availability
LT8330IS6#TRMPBF is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical diagnostics, automotive body electronics, and telecom remote units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8330IS6#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 with precision power, signal chain, and RF solutions.
The LT8330IS6#TRMPBF 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 where reliability across extreme temperatures is mandatory.
FAQ
What is the maximum output voltage achievable with LT8330IS6#TRMPBF in boost configuration?
The LT8330IS6#TRMPBF supports output voltages up to 60V in boost topology, constrained by its 60V switch rating and external component voltage ratings. In the typical 12V-to-48V application, it delivers 135mA with >85% efficiency. For higher outputs, ensure the external Schottky diode and output capacitor are rated ≥65V to maintain safety margin. The FBX feedback network must be scaled accordingly using R1 = R2 × (VOUT/1.60V – 1).
Does LT8330IS6#TRMPBF require external compensation components?
No, the LT8330IS6#TRMPBF features fully internal compensation - no external Type-II or Type-III compensation network is needed. Its current-mode architecture with built-in slope compensation ensures stable operation across all supported topologies (boost, SEPIC, inverting) and input/output combinations without loop tuning. This reduces BOM count, layout complexity, and design validation time.
Can LT8330IS6#TRMPBF generate a negative output voltage?
Yes, the LT8330IS6#TRMPBF natively supports negative output generation in inverting converter configuration. When the FBX pin is pulled below GND via the resistor divider, the internal –0.80V reference activates, enabling regulation of VOUT = –0.80V × (1 + R1/R2). This eliminates the need for external inverting op-amps or additional ICs - confirmed in the device's block diagram and Applications Information section.
What is the thermal performance difference between LT8330IS6#TRMPBF and the DFN-packaged LT8330IDDB#TRMPBF?
The LT8330IS6#TRMPBF in TSOT-23 has θJA = 125°C/W, while the LT8330IDDB#TRMPBF in 8-lead DFN achieves θJA = 60°C/W due to its exposed thermal pad (Pin 9, GND). For identical 1A load and ambient conditions, the DFN version runs ~65°C cooler. Use the TSOT-23 variant where board area is critical and power dissipation stays below 350mW; choose DFN for higher continuous loads or elevated ambient temperatures.
How does LT8330IS6#TRMPBF achieve 6µA quiescent current in Burst Mode?
The LT8330IS6#TRMPBF achieves 6µA IQ by completely disabling gate drive, oscillator, and error amplifier circuitry between bursts - entering deep sleep where only essential bias currents remain active. During each burst, it delivers a single small current pulse to recharge the output capacitor, then returns to sleep. This architecture is validated in Figure 1 (Burst Frequency vs Load Current) and Electrical Characteristics table (VIN Quiescent Current, Sleep Mode).
LT8330IS6#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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:
- TSOT-23-6
LT8330IS6#TRMPBF FAQ
1.How can I place an order for LT8330IS6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8330IS6#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 LT8330IS6#TRMPBF reliable?
The price and inventory of LT8330IS6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8330IS6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT8330IS6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8330IS6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8330IS6#TRMPBF?
LT8330IS6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8330IS6#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 LT8330IS6#TRMPBF?
For technical support, including LT8330IS6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8330IS6#TRMPBF requirements.
6.How does Aetrix verify that LT8330IS6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT8330IS6#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 LT8330IS6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT8330IS6#TRMPBF?
All LT8330IS6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8330IS6#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 LT8330IS6#TRMPBF part is unused and in its original packaging.
Return procedure for LT8330IS6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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