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Analog Devices Inc. LTC3290MPMSE#TRPBF
- Part No.:
- LTC3290MPMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3290MPMSE#TRPBF.pdf
- Description:
- IC REG BOOST 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,786
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Product details
Overview
LTC3290MPMSE#TRPBF from Analog Devices is a high-voltage boost charge pump IC designed for automotive and industrial power conversion, supporting 4.5V–55V input (VIN), 4.5V–55V auxiliary (VAUX), delivering up to 50mA output current with 15µA VIN quiescent current and AEC-Q100 qualification for –55°C to 150°C operation. It operates in standard boost or VIN-tracking mode, enabling precise high-side N-FET gate drive and battery-plus-offset supplies.
For engineers reviewing the LTC3290MPMSE#TRPBF datasheet, LTC3290MPMSE#TRPBF pinout, LTC3290MPMSE#TRPBF application, or LTC3290MPMSE#TRPBF equivalent, key selection criteria include its dual-supply boost architecture, hysteretic Burst Mode® regulation, reverse input protection to –55V, ceramic-capacitor compatibility, and thermally enhanced 10-pin MSOP package with exposed GND pad.
Technical Context
The LTC3290MPMSE#TRPBF implements a 250kHz fixed-frequency switched-capacitor boost topology using external flying capacitors (C+, C–) and dual input rails (VIN, VAUX). Its internal oscillator drives four MOSFET switches (S1–S4) in complementary phases to transfer charge from VAUX to boost VOUT above VIN.
In standard boost mode (VSET = GND), regulation occurs via FB pin servoing to 1.00V ±20mV; in VIN-tracking mode, FB generates a reference current mirrored to VSET to set a resistor-programmed offset (e.g., VOUT = VIN + 10V), with maximum output clamped at VIN + VAUX.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.5V to 55V - supports wide automotive battery and industrial bus voltages without pre-regulation |
| VAUX Range | 4.5V to 55V - enables split-input high-efficiency boost ratios and overvoltage limiting |
| Max Output Current | 50mA - sufficient for high-side N-FET gate drive and low-power auxiliary rails |
| VIN Quiescent Current | 15µA - minimizes standby power loss in always-on automotive systems |
| VAUX Quiescent Current | 1µA - enables ultra-low-power auxiliary supply monitoring |
| FB Regulation Voltage | 1.00V ±20mV - sets output accuracy and enables resistor-divider programming of VOUT |
| Thermal Range | –55°C to 150°C junction - meets AEC-Q100 Grade MP requirements for under-hood applications |
Pinout & Package
The LTC3290MPMSE#TRPBF is housed in a thermally enhanced 10-lead plastic MSOP package (MSE) with an exposed GND pad (Pin 11) that must be soldered to the PCB ground plane for thermal performance (θJA = 45°C/W) and functional integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VAUX (1) | Auxiliary supply input | Provides upper voltage rail for charge pump; limits max VOUT to VIN + VAUX; requires ≥5µF ceramic bypass |
| EN (2) | Enable logic input | Active-high control (1.1V–2V threshold); shutdown draws only 3µA from VIN and 1µA from VAUX |
| C+ (3) | Flying capacitor positive node | Connects to C+ side of external flying capacitor; switches at 250kHz with high di/dt |
| C– (4) | Flying capacitor negative node | Connects to C– side of external flying capacitor; referenced to VIN during charge transfer phase |
| VIN (5) | Main input supply | Primary power source; bypassed with ≥5µF low-ESR ceramic capacitor |
| BIAS (6) | Internal bias regulator output | 4.5V internal supply; requires 4.7µF ≥6.3V ceramic capacitor to GND; not for external loading |
| PGOOD (7) | Open-drain power-good indicator | Asserts Hi-Z when VOUT reaches 95–98% of target; requires external pull-up ≤3.6V |
| FB (8) | Feedback reference input | Servos to 1.00V; forms voltage divider in boost mode or reference current source in tracking mode |
| VSET (9) | Output voltage configuration pin | GND for boost mode; connected to VOUT via resistor for VIN-tracking offset programming |
| VOUT (10) | Regulated output | Delivers up to 50mA; bypassed with ≥5µF ceramic capacitor; connects to VIN in tracking mode |
| GND (11) | Ground reference & thermal pad | Exposed pad; must be soldered to PCB ground plane for thermal management and electrical stability |
Key Features
| Feature | Design Value |
|---|---|
| Reverse input protection | Withstands –55V on VIN/VAUX/EN - eliminates need for external reverse-polarity diodes in automotive battery inputs |
| Hysteretic Burst Mode® | Reduces quiescent current to 15µA at light loads while maintaining regulation - extends battery life in always-on modules |
| Split-input architecture | Separate VIN and VAUX rails enable optimized efficiency across wide input ranges and programmable overvoltage clamping |
| Short-circuit & thermal protection | Current limit folds back to <100mA during fault; thermal shutdown activates at ~175°C and recovers at ~165°C |
| Ceramic capacitor compatibility | Stable with low-ESR ceramics only - eliminates bulk tantalum/aluminum caps, reducing board area and cost |
Applications
| Automotive Battery-Plus Tracking Supply | High-Side N-FET Gate Driver |
|---|---|
Use Scenario: Generating a stable (VBAT + 10V) rail from a 12V lead-acid battery for gate drive of high-side N-channel MOSFETs in load-switch or DC-DC controller circuits. IC Role / Device Role / Timing Role: LTC3290MPMSE#TRPBF operates in VIN-tracking mode, using resistors to set fixed 10V offset above battery voltage while rejecting battery ripple and transients. Use Value: Enables use of low-RDS(on) N-FETs instead of P-FETs or high-side drivers, improving conduction efficiency and reducing BOM count. | Use Scenario: Providing isolated, regulated gate voltage for high-side N-FETs in automotive motor drivers or power distribution units where load disconnect and inrush limiting are required. IC Role / Device Role / Timing Role: LTC3290MPMSE#TRPBF delivers clean, current-limited VGS drive with PGOOD signaling to microcontroller for safe turn-on sequencing. Use Value: Eliminates need for bootstrap diodes/caps or isolated DC-DC converters, simplifying layout and improving reliability under cold-crank conditions. |
| Industrial High-Voltage Auxiliary Rail | VIN-Tracking Power Switching Supply |
Use Scenario: Creating a 42V auxiliary supply from a 24V industrial bus for sensors, actuators, or communication interfaces requiring higher voltage headroom. IC Role / Device Role / Timing Role: LTC3290MPMSE#TRPBF operates in standard boost mode with VAUX = 5V, delivering 42V at up to 20mA with ceramic-only filtering. Use Value: Achieves >80% efficiency at 20mA with no inductor, avoiding EMI concerns and magnetic component cost/size. | Use Scenario: Powering analog front-ends or precision ADC references where supply must track main rail to maintain common-mode rejection and avoid ground loops. IC Role / Device Role / Timing Role: LTC3290MPMSE#TRPBF configures VOUT as fixed offset above VIN (e.g., +10V), ensuring supply rejection ratio remains constant across input variations. Use Value: Maintains signal integrity in noise-sensitive measurement systems without requiring post-regulation LDOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage boost charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3261IMSE#TRPBF | Inverting charge pump (VOUT = –VIN); 100mA IOUT; 4.5V–32V input; no VIN-tracking mode | Generates negative rails only; lacks boost capability and dual-supply flexibility | Select when negative bias is needed for op-amp supplies or sensor biasing, not for positive high-side drive |
| LTC3256EDE#TRPBF | Dual-output step-down charge pump; 350mA total; 5.5V–38V input; includes watchdog timer | Provides regulated lower-voltage outputs (e.g., 3.3V/5V); no high-voltage boost or tracking | Choose for multi-rail low-voltage systems needing redundancy and fault monitoring, not for >20V boost |
Compared with LTC3290MPMSE#TRPBF, LTC3261IMSE#TRPBF offers higher output current but only inverting operation, while LTC3256EDE#TRPBF provides greater total current and safety features at the expense of voltage gain and tracking capability - neither replicates the dual-supply, VIN-tracking, or automotive-grade thermal range of the LTC3290MPMSE#TRPBF.
Availability
LTC3290MPMSE#TRPBF is available at Aetrix Electronics and suitable for automotive power switching, industrial high-voltage auxiliary rails, and battery-plus-offset tracking supplies requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for LTC3290MPMSE#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 precision instrumentation, industrial automation, automotive, and communications markets.
The LTC3290 product line delivers high-voltage, low-quiescent-current charge pumps for automotive and industrial applications where wide input range, reverse polarity protection, and VIN-tracking capability are critical design requirements.
FAQ
What is the maximum output voltage achievable with the LTC3290MPMSE#TRPBF?
The LTC3290MPMSE#TRPBF limits maximum output voltage to VIN + VAUX, with absolute maximum ratings capping VOUT at 67V. In practice, typical operation stays within 55V due to internal overvoltage protection thresholds (63–67V rising edge) and thermal constraints at high output currents. The device does not support output voltages exceeding the sum of its two input supplies.
How does the LTC3290MPMSE#TRPBF achieve reverse input protection to –55V?
The LTC3290MPMSE#TRPBF integrates internal protection circuitry on VIN, VAUX, and EN pins rated for –60V absolute maximum. This allows direct connection to automotive battery inputs without external reverse-polarity diodes, as the IC blocks reverse current flow and prevents latch-up or damage during battery jump-start or cold-crank events where voltage polarity may invert transiently.
Can the LTC3290MPMSE#TRPBF operate with only one input supply?
No - the LTC3290MPMSE#TRPBF requires both VIN and VAUX to be present and within 4.5V–55V for normal operation. VAUX powers the charge pump's flying capacitor stage and sets the upper bound for VOUT. If VAUX is absent or out-of-range, the device cannot regulate and enters fault state; it is not designed for single-supply operation.
What is the purpose of the BIAS pin on the LTC3290MPMSE#TRPBF?
The BIAS pin on the LTC3290MPMSE#TRPBF provides a regulated 4.5V internal supply for internal circuitry. It must be decoupled with a 4.7µF ceramic capacitor to GND and must not be loaded externally. Failure to properly bypass BIAS causes instability, poor regulation, or startup failure - it serves no external power function.
Does the LTC3290MPMSE#TRPBF require external compensation components?
No - the LTC3290MPMSE#TRPBF uses hysteretic Burst Mode® control with no external compensation required. Its regulation loop is internally compensated; only external passive components (flying capacitor, input/output bypass caps, feedback/tracking resistors) are needed. This simplifies design and eliminates stability analysis typically required for voltage-mode or current-mode regulators.
LTC3290MPMSE#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
LTC3290MPMSE#TRPBF FAQ
1.How can I place an order for LTC3290MPMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3290MPMSE#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 LTC3290MPMSE#TRPBF reliable?
The price and inventory of LTC3290MPMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3290MPMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3290MPMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3290MPMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3290MPMSE#TRPBF?
LTC3290MPMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3290MPMSE#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 LTC3290MPMSE#TRPBF?
For technical support, including LTC3290MPMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3290MPMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3290MPMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3290MPMSE#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 LTC3290MPMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3290MPMSE#TRPBF?
All LTC3290MPMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3290MPMSE#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 LTC3290MPMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3290MPMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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