My Inquiry
My Account
Analog Devices Inc. LTC3786IMSE#TRPBF
- Part No.:
- LTC3786IMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3786IMSE#TRPBF.pdf
- Description:
- IC REG CTRLR MULT TOP 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:925
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3786IMSE#TRPBF from Analog Devices is a high-performance synchronous boost controller driving dual N-channel MOSFETs in wide-input, high-efficiency DC/DC conversion. It operates from 4.5V–38V input (down to 2.5V post-startup), delivers up to 60V output, features ±1% 1.2V reference, 55µA no-load quiescent current, and supports 50kHz–900kHz programmable switching frequency - ideal for automotive start-stop systems requiring low IQ and robust thermal performance.
For engineers reviewing the LTC3786IMSE#TRPBF datasheet, LTC3786IMSE#TRPBF pinout, LTC3786IMSE#TRPBF application, or LTC3786IMSE#TRPBF equivalent, key selection criteria include its 16-pin MSOP package with exposed thermal pad, RSENSE/DCR current sensing flexibility, 100% duty cycle capability, Burst Mode® operation for ultra-low light-load IQ, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The LTC3786IMSE#TRPBF implements constant-frequency current-mode control with an internal error amplifier, transconductance gm = 2 mmho, and precision 1.2V reference (±1% over temperature). Its ITH pin serves as both current limit threshold and compensation node, enabling stable loop response across wide VIN/VOUT ratios.
It integrates a 5.4V internal LDO (INTVCC) for gate drivers and logic, supports three light-load modes via PLLIN/MODE pin (Burst Mode®, pulse-skipping, forced CCM), and includes reverse-current protection (IREV comparator) and power-good monitoring with 25µs delay and ±10% trip hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 38V (abs max 40V); operates down to 2.5V after startup when biased from output or auxiliary supply |
| Output Voltage Range | Up to 60V; set by external resistor divider on VFB pin referenced to 1.200V ±1% internal reference |
| Quiescent Current | 55µA in no-load pulse-skipping/forced CCM mode; <8µA in shutdown (RUN < 0.7V) |
| Switching Frequency | Programmable 50kHz–900kHz via FREQ pin resistor; synchronizable 75kHz–850kHz via PLLIN/MODE pin |
| Current Sensing | Supports RSENSE or inductor DCR sensing; max sense threshold 75mV (typ), common-mode range 2.5V–38V |
| Thermal Rating | –40°C to +125°C operating junction temperature; θJA = 40°C/W (MSOP package with soldered exposed pad) |
| Protection Features | Undervoltage lockout (3.6V/3.8V hysteresis), PGOOD with ±10% window & 25µs delay, reverse-current detection, thermal shutdown |
Pinout & Package
Package: 16-lead plastic MSOP (MSE) with exposed thermal pad (Pin 17 = GND), 3mm × 3mm footprint, RoHS-compliant, lead-free finish. Requires soldering of exposed pad to PCB ground plane for thermal performance (θJC = 10°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB (Pin 1) | Error amplifier feedback input | Connects to resistive divider across VOUT; regulates output by comparing to 1.2V reference |
| SENSE+ (Pin 2) | Positive current sense comparator input | Connects to high-side of sense resistor; supplies bias to current comparator (2.5V–38V CM range) |
| SENSE– (Pin 3) | Negative current sense comparator input | Connects to low-side of sense resistor; enables accurate current limiting and slope compensation |
| ITH (Pin 4) | Error amplifier output / current limit threshold | Setpoint for peak inductor current; also used for loop compensation network connection |
| SS (Pin 5) | Soft-start ramp control | Internal 10µA current charges external capacitor to linearly ramp VOUT during startup |
| PLLIN/MODE (Pin 6) | Sync input / light-load mode selector | Ground = Burst Mode®; INTVCC = forced CCM; 1.2V–(INTVCC–1.3V) = pulse-skipping |
| FREQ (Pin 7) | Oscillator frequency programming | Resistor-to-GND sets 50kHz–900kHz; voltage input or sync clock also accepted |
| RUN (Pin 8) | Enable/shutdown control | 1.28V threshold with 100mV hysteresis; <0.7V enables ultra-low-IQ shutdown (<8µA) |
| GND (Pin 9 + Exposed Pad 17) | Power and signal reference | Must connect exposed pad to PCB ground plane for thermal and EMI performance |
| BG (Pin 10) | Bottom gate driver output | Drives main N-channel MOSFET gate; 1.2Ω pull-up/pull-down, 20ns rise/fall (3300pF load) |
| INTVCC (Pin 11) | Internal 5.4V LDO output | Supplies gate drivers and control logic; requires ≥4.7µF ceramic decoupling to GND |
| VBIAS (Pin 12) | Main bias supply input | Accepts 4.5V–38V; powers internal circuits and enables operation down to 2.5V post-startup |
| BOOST (Pin 13) | Floating supply for top gate driver | Bypassed to SW node; enables 100% duty cycle for synchronous top FET drive |
| TG (Pin 14) | Top gate driver output | Drives synchronous N-channel MOSFET gate; integrated charge pump supports high-side drive |
| SW (Pin 15) | Switch node | Connects to source of TG, drain of BG, and boost inductor; high dv/dt node requiring careful layout |
| PGOOD (Pin 16) | Open-drain power-good indicator | Pulls low when VOUT deviates >±10% from regulation; 25µs delay prevents false trips |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications (–40°C to +125°C), including start-stop systems and infotainment power rails |
| Three selectable light-load modes | Burst Mode® (55µA IQ), pulse-skipping (low ripple), or forced continuous conduction (constant frequency) |
| Flexible current sensing | Supports discrete shunt (RSENSE) or lossless inductor DCR sensing - reduces BOM count and heat generation |
| 100% duty cycle capability | Enables seamless transition to dropout operation; maintains regulation even when VIN approaches VOUT |
| Integrated 5.4V LDO (INTVCC) | Eliminates need for external bias rail; powers gate drivers and logic with ±2% load regulation (0–50mA) |
| Robust protection suite | Includes UVLO, PGOOD with hysteresis, reverse-current detection, and thermal shutdown - reduces system-level fault handling complexity |
Applications
| Automotive Start-Stop Systems | Industrial High-Voltage Bias Rails |
|---|---|
Use Scenario: Powering 24V infotainment head units and ADAS sensors from variable 9V–16V battery during engine cranking and stop phases. IC Role / Device Role / Timing Role: Synchronous boost controller regulating stable 24V output with fast transient response and low-noise operation. Use Value: 55µA quiescent current extends battery runtime in accessory mode; AEC-Q100 qualification ensures reliability under automotive thermal and vibration stress. |
Use Scenario: Generating isolated 48V bias for industrial PLC I/O modules and fieldbus transceivers from 12V or 24V backplane supplies. IC Role / Device Role / Timing Role: High-efficiency DC/DC controller delivering up to 60V output with precise ±1% regulation and programmable soft-start. Use Value: Wide 4.5V–38V input accommodates brownout conditions; RSENSE/DCR sensing simplifies design and improves accuracy at high currents. |
| Medical Portable Imaging Devices | High-Voltage Battery-Powered Test Equipment |
Use Scenario: Supplying 36V–48V rails for portable ultrasound transducer drivers and analog front-ends from Li-ion battery packs (10.8V–16.8V). IC Role / Device Role / Timing Role: Low-noise, high-efficiency boost controller supporting burst-mode operation to minimize standby power draw. Use Value: <8µA shutdown current preserves battery life during idle; ±1% reference ensures consistent imaging signal chain performance. |
Use Scenario: Powering handheld oscilloscope front-ends and precision ADC references requiring clean, regulated 50V rails from 14.4V or 21.6V battery stacks. IC Role / Device Role / Timing Role: Programmable-frequency synchronous boost controller with adjustable soft-start and PGOOD monitoring. Use Value: 50kHz–900kHz frequency selection balances efficiency vs. size; 25µs PGOOD delay prevents false fault triggers during load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3787IMSE#TRPBF | Pin-compatible upgrade with improved current-sense accuracy (±0.5% vs ±1%), lower 35µA IQ, and enhanced light-load efficiency | Preferred for new designs requiring tighter regulation and longer battery life; same MSOP-16 footprint and layout | Select LTC3787IMSE#TRPBF when upgrading for higher precision or lower IQ; verify compensation network stability per revised gm spec |
| TPS40210DGQ | Non-synchronous controller (external Schottky rectifier); wider 4.5V–52V input; no integrated PLL or Burst Mode®; higher 2.5mA IQ | Suitable for cost-sensitive, non-automotive applications where 55µA IQ and AEC-Q100 are not required | Choose TPS40210DGQ only if synchronous rectification and ultra-low IQ are unnecessary; expect ~3–5% lower efficiency at full load |
Compared with LTC3786IMSE#TRPBF, LTC3787IMSE#TRPBF offers measurable improvements in reference accuracy and quiescent current while maintaining pin and function compatibility, whereas TPS40210DGQ trades efficiency and feature depth for cost and input voltage margin - making it a functional but not drop-in alternative.
Availability
LTC3786IMSE#TRPBF is available at Aetrix Electronics and suitable for automotive start-stop systems, industrial high-voltage bias rails, and medical portable imaging devices requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for LTC3786IMSE#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 (now part of Analog Devices, Inc., a global leader in high-performance analog, mixed-signal, and digital signal processing technologies) designs precision power management ICs for demanding industrial, automotive, and medical applications.
The LTC3786IMSE#TRPBF belongs to the LTC® high-efficiency DC/DC controller product line, engineered specifically for wide-input, high-output-voltage boost applications where low quiescent current, AEC-Q100 reliability, and flexible light-load operation are critical.
FAQ
What is the maximum output voltage supported by the LTC3786IMSE#TRPBF?
The LTC3786IMSE#TRPBF supports output voltages up to 60V, determined by the external feedback resistor divider and the internal 1.200V ±1% reference. The BOOST and SW pins are rated to 71V and 65V respectively, ensuring safe operation within this range when properly laid out with appropriate MOSFETs and passive components.
Does the LTC3786IMSE#TRPBF require an external bootstrap capacitor?
No, the LTC3786IMSE#TRPBF does not require an external bootstrap capacitor. It integrates a charge pump on the BOOST pin that self-generates the floating gate drive voltage for the top N-channel MOSFET, enabling true 100% duty cycle operation without external boot components.
How does the RUN pin behavior differ between shutdown and deep shutdown modes for the LTC3786IMSE#TRPBF?
The LTC3786IMSE#TRPBF has two RUN pin thresholds: pulling RUN below 1.28V disables the main control loop (shutdown), while pulling RUN below 0.7V disables the INTVCC LDO and most internal circuitry, reducing quiescent current to <8µA (deep shutdown). Hysteresis of 100mV prevents oscillation near the threshold.
Can the LTC3786IMSE#TRPBF operate with inductor DCR current sensing only?
Yes, the LTC3786IMSE#TRPBF fully supports DCR sensing via the SENSE+ and SENSE– pins. It includes built-in filtering and offset compensation to reject common-mode noise and ensure accurate current measurement across temperature, eliminating the need for a discrete sense resistor and associated power loss.
Is the LTC3786IMSE#TRPBF pin-compatible with other members of the LTC378x family?
The LTC3786IMSE#TRPBF shares identical pinout and footprint with LTC3787IMSE#TRPBF and LTC3786HMSE#TRPBF, but differs from LTC3786EUD#TRPBF (QFN package). Functionally, LTC3787 is a direct upgrade with improved specs; always verify ITH compensation and loop stability when substituting due to gm differences.
LTC3786IMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Flyback, SEPIC
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 38V
- Frequency - Switching:
- 105kHz ~ 760kHz
- Duty Cycle (Max):
- 96%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Current Limit, Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3786IMSE#TRPBF FAQ
1.How can I place an order for LTC3786IMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3786IMSE#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 LTC3786IMSE#TRPBF reliable?
The price and inventory of LTC3786IMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3786IMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3786IMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3786IMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3786IMSE#TRPBF?
LTC3786IMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3786IMSE#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 LTC3786IMSE#TRPBF?
For technical support, including LTC3786IMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3786IMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3786IMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3786IMSE#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 LTC3786IMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3786IMSE#TRPBF?
All LTC3786IMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3786IMSE#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 LTC3786IMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3786IMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3786IMSE#TRPBF Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
