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Analog Devices Inc. LTC3290HMSE#TRPBF
- Part No.:
- LTC3290HMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3290HMSE#TRPBF.pdf
- Description:
- IC REG CHG PUMP 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,661
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Product details
Overview
LTC3290HMSE#TRPBF from Analog Devices is a high-voltage boost charge pump IC designed for automotive and industrial power conversion, supporting 4.5V–55V input/auxiliary supplies, delivering up to 50mA output current with 15µA VIN quiescent current and reverse input protection to –55V. It operates in standard boost or VIN-tracking mode, enabling precise high-side N-FET gate drive and stable tracking supplies in battery-powered systems.
For engineers reviewing the LTC3290HMSE#TRPBF datasheet, LTC3290HMSE#TRPBF pinout, LTC3290HMSE#TRPBF application, or LTC3290HMSE#TRPBF equivalent, key selection criteria include its dual-mode regulation (boost vs. VIN-tracking), thermal grade (–40°C to 150°C), AEC-Q100 qualification, and compatibility with ceramic capacitors for low-noise operation in harsh environments.
Technical Context
The LTC3290HMSE#TRPBF implements a 250kHz fixed-frequency switched-capacitor boost architecture using external flying capacitor CFLY between C+ and C– pins. Its internal logic supports two distinct regulation modes: standard boost (VSET = GND) with FB-based voltage setting, and VIN-tracking mode where VOUT = VIN + (1V × R2/R1) via mirrored reference current.
It integrates short-circuit current limiting (150mA typ.), thermal shutdown (~175°C), PGOOD open-drain status signaling, and reverse-input protection down to –55V on VIN/VAUX. The BIAS pin provides a regulated 4.5V internal supply for internal circuitry and requires a 4.7µF bypass capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 55V on both VIN and VAUX - enables flexible dual-supply architectures and wide-battery-range operation. |
| Max Output Current | 50mA continuous - sufficient for driving high-side N-FET gates or biasing analog circuitry requiring stable high-voltage rails. |
| VIN Quiescent Current | 15µA typical in boost mode - minimizes standby power loss in always-on automotive subsystems. |
| Operating Junction Temp | –40°C to 150°C - qualified per AEC-Q100 Grade H, suitable for under-hood and industrial control applications. |
| Output Regulation Accuracy | ±2% on FB reference (0.98V–1.02V) - ensures tight output voltage control across temperature and load. |
| Effective Open-Loop ROL | 65Ω typical - determines maximum available output current via IOUT = [(VIN + VAUX) − VOUT] / ROL. |
| PGOOD Threshold Accuracy | 95–98% of final regulation voltage in boost mode - provides reliable power-good signaling for system sequencing. |
Pinout & Package
The LTC3290HMSE#TRPBF is housed in a thermally enhanced 10-pin MSOP package with exposed ground pad (Pin 11), requiring soldering to PCB ground plane for thermal performance (θJA = 45°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VAUX (Pin 1) | Auxiliary supply input | Provides second high-voltage rail; sets upper limit for VOUT in both boost and tracking modes. |
| EN (Pin 2) | Enable logic input | Active-high digital control; threshold 1.1V–2V rising; must not be left floating. |
| C+ (Pin 3) | Flying capacitor positive node | Connects to CFLY anode; switches at 250kHz to transfer charge during pump cycles. |
| C– (Pin 4) | Flying capacitor negative node | Connects to CFLY cathode; polarity reverses during startup - prohibits polarized capacitors. |
| VIN (Pin 5) | Main input supply | Bypassed with ≥5µF ceramic capacitor; withstands –60V to +60V transient stress. |
| BIAS (Pin 6) | Internal bias regulator output | 4.5V (typ) supply for internal circuitry; requires 4.7µF ceramic bypass to GND. |
| PGOOD (Pin 7) | Open-drain power-good indicator | Asserts low when VOUT out-of-regulation; needs external pull-up ≤3.6V. |
| FB (Pin 8) | Feedback reference input | Servos to 1.0V; used with resistor divider to set VOUT in boost mode or generate reference current in tracking mode. |
| VSET (Pin 9) | Tracking offset configuration | Grounded for boost mode; connected to VOUT via resistor to set tracking offset in VIN-tracking mode. |
| VOUT (Pin 10) | Regulated high-voltage output | Delivers up to 55V; bypassed with low-ESR ceramic capacitor; connects to VIN in tracking layout. |
| GND (Pin 11) | Power and signal ground | Exposed thermal pad - must be soldered to PCB ground plane for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Wide dual-input voltage range | 4.5V–55V on both VIN and VAUX - supports diverse battery and bus architectures without external level-shifting. |
| VIN-tracking regulation | Programmable offset above VIN (e.g., VOUT = VIN + 10V) using only two external resistors - eliminates need for separate tracking ICs. |
| Reverse input protection | Withstands –55V on VIN/VAUX - protects against battery reverse-connection in automotive systems. |
| Thermal and short-circuit protection | Auto-recovering thermal shutdown (~175°C) and foldback current limiting (150mA typ.) - ensures robustness during fault conditions. |
| AEC-Q100 Grade H qualification | Validated for –40°C to 150°C operation - meets automotive reliability requirements for engine control and ADAS modules. |
Applications
| High-Side N-FET Driver | VIN Tracking Supply |
|---|---|
Use Scenario: Driving the gate of a high-side N-channel MOSFET in a 12V/24V automotive load switch with inrush current limiting and load disconnect capability. IC Role / Device Role / Timing Role: LTC3290HMSE#TRPBF generates a stable, VIN-referenced gate drive voltage (e.g., VGS = VIN + 10V) to fully enhance the FET while maintaining safe VDS margin. Use Value: Enables use of low-RDS(on) N-FETs instead of costly P-FETs or high-side drivers, reducing conduction losses and board space. |
Use Scenario: Providing a regulated auxiliary supply that tracks vehicle battery voltage with fixed offset (e.g., VOUT = VBAT + 10V) for sensor bias or analog front-end circuits. IC Role / Device Role / Timing Role: LTC3290HMSE#TRPBF operates in VIN-tracking mode, dynamically adjusting VOUT as VBAT varies from 9V to 16V during cranking and charging. Use Value: Maintains constant headroom for downstream LDOs or op-amps without requiring feedback loop redesign or microcontroller intervention. |
| Industrial High-Voltage Boost | Automotive Power Switching |
Use Scenario: Generating a stable 42V rail from a 24V industrial bus to power legacy 36V actuators or solenoids in factory automation equipment. IC Role / Device Role / Timing Role: LTC3290HMSE#TRPBF operates in standard boost mode with external resistor divider to set VOUT = 42V, using VAUX = 24V as auxiliary source. Use Value: Delivers up to 50mA with <15µA quiescent current and ceramic-capacitor stability - avoids inductor EMI and simplifies layout in noise-sensitive PLC modules. |
Use Scenario: Powering infotainment system backlight drivers or camera module bias rails in vehicles where input voltage swings from cold-crank (6V) to load-dump (40V). IC Role / Device Role / Timing Role: LTC3290HMSE#TRPBF leverages –55V reverse protection and AEC-Q100 Grade H rating to survive harsh automotive transients while regulating VOUT to 15V or 18V. Use Value: Eliminates need for discrete TVS + linear regulator stacks, reducing component count and improving efficiency over LDO-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3261IMSE#TRPBF | Inverting topology only; max VIN = 32V; 100mA IOUT; no VIN-tracking mode. | Generates negative rails (e.g., –15V), not positive boost; lacks reverse-input protection and AEC-Q100 qualification. | Select when negative bias is required and input voltage stays below 32V; unsuitable for automotive VIN-tracking or reverse-protection needs. |
| LTC3256EFE#TRPBF | Dual-output (350mA step-down + 50mA boost); wider VIN (5.5V–38V); no reverse protection; non-AEC-Q100. | Provides integrated dual-rail solution but lacks programmable tracking and –55V tolerance; higher quiescent current (35µA). | Prefer for cost-sensitive industrial systems needing multiple rails; avoid where AEC-Q100 or reverse-battery immunity is mandatory. |
Compared with LTC3290HMSE#TRPBF, LTC3261IMSE#TRPBF offers higher output current but only inverting operation and no tracking capability, while LTC3256EFE#TRPBF delivers greater integration at the expense of automotive qualification and reverse-input resilience - making LTC3290HMSE#TRPBF uniquely suited for safety-critical, high-reliability VIN-tracking and gate-drive applications.
Availability
LTC3290HMSE#TRPBF is available at Aetrix Electronics and suitable for automotive power switching, high-side N-FET driver design, and industrial high-voltage boost applications requiring stable component supply, AEC-Q100 compliance, and extended temperature operation.
Supply support for LTC3290HMSE#TRPBF 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 LTC3290 belongs to Analog Devices' high-voltage charge pump product line, engineered specifically for automotive-grade power conversion where VIN-tracking, reverse-battery immunity, and ultra-low quiescent current are critical design requirements.
FAQ
What is the operating temperature range for the LTC3290HMSE#TRPBF?
The LTC3290HMSE#TRPBF is rated for junction temperatures from –40°C to 150°C and is AEC-Q100 qualified for automotive Grade H applications. This specification is validated through characterization and statistical process controls, and the exposed pad must be soldered to the PCB ground plane to maintain thermal performance at the upper end of this range.
How does the VIN-tracking mode work on the LTC3290HMSE#TRPBF?
In VIN-tracking mode, the LTC3290HMSE#TRPBF regulates VOUT to a fixed offset above VIN using external resistors: one from FB to GND sets a 1V reference current, mirrored into a resistor from VOUT to VSET. The resulting VOUT = VIN + (1V × R2/R1) enables precise tracking without microcontroller intervention or complex feedback loops.
Can the LTC3290HMSE#TRPBF withstand reverse battery connection?
Yes, the LTC3290HMSE#TRPBF provides reverse input protection down to –55V on both VIN and VAUX pins, making it suitable for automotive applications where accidental battery reversal may occur. This protection is inherent to the device's input structure and requires no external components.
What is the minimum external capacitor requirement for stable operation of the LTC3290HMSE#TRPBF?
The LTC3290HMSE#TRPBF requires ≥5µF low-ESR ceramic capacitors on VIN and VAUX, ≥10µF on VOUT in boost mode, and ≥1µF on the flying capacitor (CFLY) between C+ and C–. Polarized capacitors are prohibited for CFLY due to voltage reversal during startup.
Does the LTC3290HMSE#TRPBF support both boost and tracking modes simultaneously?
No, the LTC3290HMSE#TRPBF operates exclusively in one mode at a time: standard boost mode when VSET is grounded, or VIN-tracking mode when VSET is connected to VOUT via an external resistor. Mode selection is hardware-configured and cannot be dynamically switched during operation.
LTC3290HMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
LTC3290HMSE#TRPBF FAQ
1.How can I place an order for LTC3290HMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3290HMSE#TRPBF 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 LTC3290HMSE#TRPBF reliable?
The price and inventory of LTC3290HMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3290HMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3290HMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3290HMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3290HMSE#TRPBF?
LTC3290HMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3290HMSE#TRPBF 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 LTC3290HMSE#TRPBF?
For technical support, including LTC3290HMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3290HMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3290HMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3290HMSE#TRPBF 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 LTC3290HMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3290HMSE#TRPBF?
All LTC3290HMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3290HMSE#TRPBF, 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 LTC3290HMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3290HMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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