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Analog Devices Inc. LTC3290EMSE#TRPBF
- Part No.:
- LTC3290EMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3290EMSE#TRPBF.pdf
- Description:
- IC REG BOOST 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,566
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Product details
Overview
LTC3290EMSE#TRPBF from Analog Devices is a high-voltage boost charge pump IC supporting 4.5V to 55V input and auxiliary supplies, delivering up to 50mA output current with 15µA VIN quiescent current and hysteretic Burst Mode operation. It operates in standard boost mode (VOUT ≤ VIN + VAUX) or VIN-tracking mode (VOUT = VIN + offset), enabling high-side N-FET driver biasing and industrial power switching supplies.
For engineers reviewing the LTC3290EMSE#TRPBF datasheet, LTC3290EMSE#TRPBF pinout, LTC3290EMSE#TRPBF application, or LTC3290EMSE#TRPBF equivalent, this device is selected for wide-input-range, low-quiescent-current, ceramic-capacitor-compatible high-voltage boosting where reverse input protection to –55V and thermal/short-circuit robustness are required.
Technical Context
The LTC3290EMSE#TRPBF uses a 250kHz internal oscillator to drive a switched-capacitor topology with four internal MOSFET switches (S1–S4), charging an external flying capacitor (CFLY) from VAUX then transferring charge to VOUT referenced to VIN. Regulation is achieved via a 1V internal reference applied to the FB pin, with feedback configured either as a resistive divider (boost mode) or current-mirror-based offset programming (tracking mode).
In tracking mode, the FB pin sources a 1V/R1 reference current mirrored to the VSET pin, establishing a precise voltage offset between VOUT and VIN set by R2/R1 ratio - independent of VIN variation but capped at VIN + VAUX. The PGOOD open-drain output signals regulation status with 95%–98% rising threshold in boost mode and fixed ±1.5V hysteresis in tracking mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 55V on both VIN and VAUX pins - supports split-supply architectures for high-efficiency boosting beyond single-rail limits. |
| Max Output Current | 50mA continuous - determined by effective open-loop resistance (ROL ≈ 65Ω) and (VIN + VAUX – VOUT) headroom. |
| VIN Quiescent Current | 15µA typical in Burst Mode - enables ultra-low-power operation in battery-backed or always-on industrial systems. |
| VAUX Quiescent Current | 1µA typical in shutdown - minimizes auxiliary supply loading when device is disabled. |
| FB Regulation Voltage | 1.00V ±20mV - sets precision output voltage scaling via external resistor dividers in boost mode or reference current generation in tracking mode. |
| Output Overvoltage Threshold | 65V ±2V rising threshold - provides fail-safe clamping against transient overvoltage events on VOUT. |
| Thermal Shutdown | Activates at ~175°C junction temperature, resumes at ~165°C - protects against sustained overload without requiring external thermal management circuitry. |
Pinout & Package
The LTC3290EMSE#TRPBF is housed in a thermally enhanced 10-lead plastic MSOP package (MSE) with exposed GND pad (Pin 11) requiring soldering to PCB ground plane for thermal performance (θJA = 45°C/W). Package dimensions: 3.00mm × 3.00mm × 1.10mm, 0.5mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VAUX (1) | Auxiliary supply input | Provides energy source for flying capacitor charging; must be bypassed with ≥10µF ceramic capacitor for stable high-frequency operation. |
| EN (2) | Enable logic input | Active-high control (1.1V–2V threshold); floating prohibited - ties device into system power sequencing with <5µA leakage. |
| C+ (3), C– (4) | Flying capacitor terminals | Switch high dv/dt nodes; require short, low-inductance traces to minimize EMI and ensure charge transfer efficiency. |
| VIN (5) | Main input supply | Primary power rail; reverse input protection rated to –55V - enables robust operation in automotive load-dump or polarity-reversal scenarios. |
| BIAS (6) | Internal bias voltage output | 4.5V (typ) regulated supply for internal circuitry; requires 4.7µF ceramic bypass to GND - not for external loading. |
| PGOOD (7) | Power-good open-drain output | Signals regulation status; requires external pull-up ≤3.6V - used for microprocessor enable or fault monitoring in safety-critical systems. |
| FB (8) | Feedback reference input | Serves 1V reference point; in boost mode sets VOUT via R1/R2 divider; in tracking mode generates reference current for offset programming. |
| VSET (9) | Voltage set configuration pin | GND for boost mode; connected to VOUT via R2 in tracking mode - determines output offset magnitude and mode selection. |
| VOUT (10) | Regulated output voltage | Delivers boosted or tracked output; bypassed with ≥5µF ceramic capacitor - low-ESR requirement ensures ripple suppression and stability. |
| GND (11) | Ground (exposed pad) | Primary thermal and electrical return path; must be soldered to PCB ground plane - failure causes thermal derating and regulation instability. |
Key Features
| Feature | Design Value |
|---|---|
| Wide 4.5V–55V dual-supply range | Enables single-chip solutions for 12V/24V/48V industrial and automotive systems without external level-shifting or pre-regulation. |
| VIN-tracking mode with programmable offset | Supports dynamic biasing of high-side N-FETs where gate voltage must track drain voltage plus fixed margin (e.g., 10V), reducing gate-drive losses. |
| Reverse input protection to –55V | Eliminates need for external series diodes or TVS in battery-connected applications, preserving efficiency and board space. |
| Stable with ceramic capacitors only | Removes reliance on high-ESR tantalum/aluminum caps - reduces cost, size, and aging-related drift in long-life embedded deployments. |
| AEC-Q100 qualified (H-grade) | Validated for automotive under-hood operation (–40°C to 150°C junction), including HTOL, temperature cycling, and ESD testing per stress test plan. |
Applications
| High-Side N-FET Driver Bias Supply | Industrial VIN-Tracking Power Rail |
|---|---|
|
Use Scenario: Biasing gate of high-side N-channel MOSFET in 24V industrial motor control H-bridge where gate voltage must exceed drain voltage by ≥10V. IC Role / Device Role / Timing Role: LTC3290EMSE#TRPBF operates in VIN-tracking mode to generate VOUT = VIN + 10V, dynamically adjusting as input varies during line transients. Use Value: Eliminates isolated DC/DC or transformer-based gate drivers; achieves <15µA quiescent current and ±1.5V tracking accuracy over temperature. |
Use Scenario: Providing stable 12V auxiliary rail from variable 9–16V vehicle battery in ADAS camera module with strict low-noise requirements. IC Role / Device Role / Timing Role: LTC3290EMSE#TRPBF configured in boost mode delivers regulated 12V output using 12V main rail and 5V auxiliary supply, with Burst Mode minimizing standby power. Use Value: Delivers 50mA at >85% efficiency across full input range while maintaining <200mVpp output ripple - meets CISPR-25 Class 5 EMI limits. |
| Automotive Load Disconnect Circuit | High-Voltage Sensor Bias Supply |
|
Use Scenario: Enabling/disabling 42V loads in 12V automotive systems using high-side switch with integrated inrush limiting and disconnect control. IC Role / Device Role / Timing Role: LTC3290EMSE#TRPBF powers gate driver IC and supervisory circuitry; PGOOD signal validates rail before enabling load switch EN pin. Use Value: Reverse input protection withstands –55V jump-start conditions; thermal shutdown prevents latch-up during sustained short-circuit events. |
Use Scenario: Supplying ±15V bias to precision instrumentation amplifier in 48V industrial current-sense shunt monitor operating from unregulated 36–55V bus. IC Role / Device Role / Timing Role: LTC3290EMSE#TRPBF boosts 48V input to 55V max output for positive rail; paired with LTC3261 for negative rail generation. Use Value: Supports full 55V input range without derating; 65Ω effective output resistance ensures <1% load regulation from 0–50mA. |
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 output, 4.5V–32V input, no VIN-tracking mode. | Used for dual-rail (±V) biasing rather than high-side FET gate drive; lacks PGOOD and reverse input protection. | Select when negative output required and input range ≤32V; not suitable for tracking or >32V applications. |
| LTC3256EFE#TRPBF | Dual-output step-down charge pump (350mA), 5.5V–38V input, integrated watchdog timer, no boost capability. | Targets high-current digital core rails (e.g., FPGA I/O), not high-voltage analog bias; lacks programmable tracking or reverse protection. | Choose for >100mA step-down needs with watchdog supervision; incompatible with boost or tracking topologies. |
Compared with LTC3290EMSE#TRPBF, LTC3261 offers higher output current but only inverting operation and narrower input range, while LTC3256 provides step-down capability and watchdog functionality but cannot generate voltages above input - making LTC3290EMSE#TRPBF uniquely suited for VIN-tracking and high-voltage boost in automotive and industrial power management.
Availability
LTC3290EMSE#TRPBF is available at Aetrix Electronics and suitable for automotive power switching, industrial sensor biasing, and high-side N-FET driver applications requiring stable component supply across extended temperature ranges and harsh electrical environments.
Supply support for LTC3290EMSE#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, sensing, and timing solutions.
The LTC3290EMSE#TRPBF belongs to Analog Devices' high-voltage charge pump product line, designed specifically for robust, low-quiescent-current power conversion in automotive and industrial systems where wide input range, reverse polarity tolerance, and thermal resilience are critical.
FAQ
What is the maximum output voltage achievable with the LTC3290EMSE#TRPBF?
The LTC3290EMSE#TRPBF limits maximum output voltage to VIN + VAUX, with absolute maximum ratings capping VOUT at 67V. In practice, the device regulates up to 55V output when both VIN and VAUX are at their 55V upper limit. This constraint applies in both standard boost and VIN-tracking modes, ensuring safe operation within the internal switch voltage ratings and overvoltage protection thresholds.
How does the LTC3290EMSE#TRPBF achieve reverse input protection to –55V?
The LTC3290EMSE#TRPBF integrates internal protection circuitry on the VIN pin that blocks reverse current flow and clamps negative transients up to –55V without external components. This is implemented via dedicated input stage design and substrate isolation, validated per AEC-Q100 stress tests - eliminating the need for series Schottky diodes or external TVS devices in automotive battery-connected applications.
Can the LTC3290EMSE#TRPBF operate with only one input supply?
Yes, the LTC3290EMSE#TRPBF can operate with VAUX tied to VIN, effectively using a single supply. In this configuration, maximum output is limited to 2 × VIN, and VAUX quiescent current increases by 1µA. However, split-supply operation (separate VIN and VAUX) is recommended for optimal efficiency, especially at high boost ratios, as it reduces charge transfer losses and improves thermal performance.
What is the purpose of the BIAS pin on the LTC3290EMSE#TRPBF?
The BIAS pin on the LTC3290EMSE#TRPBF provides a 4.5V (typical) internally regulated voltage for powering internal circuitry, including the oscillator, reference, and protection comparators. It must be bypassed with a 4.7µF ceramic capacitor to GND but must not be loaded externally - connecting external circuitry risks regulation instability and violates Absolute Maximum Ratings.
Does the LTC3290EMSE#TRPBF require external compensation components?
No, the LTC3290EMSE#TRPBF uses hysteretic Burst Mode control with internal compensation - no external compensation components are required. Stability is ensured across all operating conditions when using recommended ceramic capacitors (≥10µF input/output, ≥1µF flying capacitor) and proper PCB layout with short, low-inductance paths to the C+/C– pins and solid ground plane connection to the exposed pad.
LTC3290EMSE#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
LTC3290EMSE#TRPBF FAQ
1.How can I place an order for LTC3290EMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3290EMSE#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 LTC3290EMSE#TRPBF reliable?
The price and inventory of LTC3290EMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3290EMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3290EMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3290EMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3290EMSE#TRPBF?
LTC3290EMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3290EMSE#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 LTC3290EMSE#TRPBF?
For technical support, including LTC3290EMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3290EMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3290EMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3290EMSE#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 LTC3290EMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3290EMSE#TRPBF?
All LTC3290EMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3290EMSE#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 LTC3290EMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3290EMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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