My Inquiry
My Account
Analog Devices Inc. LT8610AIMSE#TRPBF
- Part No.:
- LT8610AIMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8610AIMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 3.5A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:699
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT8610AIMSE#TRPBF from Analog Devices is a 42V, 3.5A synchronous step-down regulator with 2.5µA quiescent current in Burst Mode, 30ns minimum on-time, and fixed 5V output. It operates across 3.4V–42V input, delivers <10mVP-P output ripple, and integrates soft-start, power-good flag, and external synchronization - enabling robust power conversion in automotive infotainment and industrial sensor nodes.
For engineers reviewing the LT8610AIMSE#TRPBF datasheet, LT8610AIMSE#TRPBF pinout, LT8610AIMSE#TRPBF application, or LT8610AIMSE#TRPBF equivalent, this page provides verified technical context, package-validated pin functions, real-world efficiency curves at 5V/3.3V outputs, EMI-optimized layout guidance, and automotive-grade AEC-Q100 qualification details for production design-in.
Technical Context
The LT8610AIMSE#TRPBF employs constant-frequency current-mode control with internal 0.97V reference and programmable oscillator (200kHz–2.2MHz via RT pin). Its dual NMOS synchronous architecture features 120mΩ top switch and 65mΩ bottom switch, enabling high efficiency across load range while tolerating inductor saturation during overload.
Burst Mode operation reduces quiescent current to 2.5µA at no load by gating entire switching cycles; pulse-skipping mode (enabled via SYNC pin) maintains regulation under light loads with higher IQ but lower ripple. The integrated PG flag monitors ±9% VOUT regulation window and fault conditions independently of EN/UV state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.4V to 42V - supports wide automotive battery transients and industrial 24V/36V rails without pre-regulation. |
| Output Voltage | Fixed 5.00V ±1.5% - internally trimmed resistor divider eliminates external feedback components and minimizes no-load current. |
| Max Output Current | 3.5A continuous - enables single-chip 5V/3.5A supply for microcontrollers, FPGAs, or multi-rail PMICs. |
| Quiescent Current | 2.5µA at 12VIN/5VOUT no load - extends battery life in always-on telematics and IoT edge nodes. |
| Min On-Time | 30ns - supports high VIN-to-VOUT ratios (e.g., 42V→5V) at 2MHz switching without pulse skipping. |
| Efficiency @1A | 95% at 12VIN/5VOUT - reduces thermal load in sealed enclosures and enables compact 16-MSOP layout. |
| EMI Performance | Improved vs LT8610 - integrated spread-spectrum and fast switching edges reduce peak radiated emissions in CISPR 25 Class 5 systems. |
Pinout & Package
LT8610AIMSE#TRPBF uses a thermally enhanced 16-lead MSOP package with exposed GND pad (Pin 17), θJA = 40°C/W. The package requires soldering of the exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SYNC) | External clock sync input | Ground for low-ripple Burst Mode; tie to logic high or external clock for pulse-skipping/synchronization - disables frequency foldback when driven. |
| 2 (TR/SS) | Soft-start and tracking control | Capacitor-programmed voltage ramp rate; internal 2.2µA pull-up enables precise startup slew control and output tracking in multi-rail systems. |
| 3 (RT) | Switching frequency set | Resistor to GND sets fSW from 200kHz to 2.2MHz - allows optimization of size (high f) vs efficiency (low f) and EMI compliance. |
| 4 (EN/UV) | Enable and input UVLO | 1.00V rising threshold with 40mV hysteresis - enables VIN brownout protection or system-level enable sequencing. |
| 5,6 (VIN) | Main power input | High-current path for IC bias and top switch - must be locally bypassed with low-ESR capacitor placed adjacent to pins. |
| 7 (NC) | No connect | Not bonded internally - leave unconnected; do not route traces or apply voltage. |
| 8,17 (GND) | Power and signal ground | Return path for bottom switch and analog circuitry - exposed pad (Pin 17) must be soldered to PCB ground plane for thermal performance. |
| 9–11 (SW) | Power switch node | High dv/dt node connecting to inductor and BST capacitor - minimize trace area to reduce EMI and parasitic inductance. |
| 12 (BST) | Bootstrap supply | Drives top NMOS gate above VIN - requires 0.1µF ceramic capacitor placed directly between BST and SW pins. |
| 13 (INTVCC) | Internal 3.4V regulator bypass | Bypass with ≥1µF ceramic capacitor - supplies internal logic/drivers; draws current from BIAS if VBIAS > 3.1V. |
| 14 (BIAS) | Efficiency-boosting bias supply | Tie to VOUT (≥3.3V) to reduce VIN current draw and improve light-load efficiency - mandatory for optimal 2.5µA IQ. |
| 15 (PG) | Power-good open-drain flag | Asserts high when VOUT is within ±9% of 5V and no fault - drives external MCU reset or status LED without level-shifting. |
| 16 (VOUT) | Regulated 5V output | Fixed 5V output pin with internal 12.5MΩ feedback divider - eliminates external resistors and saves board space. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade I qualified | Rated for –40°C to +125°C junction temperature - validated for automotive infotainment, ADAS camera modules, and body control units. |
| Ultralow 2.5µA quiescent current | Enables >10-year battery life in always-on vehicle trackers and smart sensors powered by coin cells or supercaps. |
| 30ns minimum on-time | Supports direct 42V→5V conversion at 2MHz without duty-cycle limitation - eliminates need for intermediate 12V rail. |
| Integrated PG flag with ±9% accuracy | Provides reliable power sequencing feedback to host processor without external comparators or dividers. |
| BIAS pin efficiency boost | Reduces total input current by sourcing INTVCC from VOUT - improves full-load efficiency by up to 1.2% at 12VIN/5VOUT. |
| Thermally enhanced MSOP-16 | Exposed pad lowers θJC to 10°C/W - enables 3.5A operation at 70°C ambient without heatsink in standard 2-layer PCBs. |
Applications
| Automotive Infotainment | Industrial Sensor Nodes |
|---|---|
|
Use Scenario: Powering SoC, display interface, and audio codec in head unit with cold-crank (4.5V) to load-dump (42V) operation. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering stable 3.5A with Burst Mode for standby and pulse-skipping for active mode. Use Value: Maintains 2.5µA IQ during ignition-off to prevent battery drain; withstands 42V transients without shutdown. |
Use Scenario: Supplying 5V to wireless sensor MCU, RF transceiver, and analog front-end in remote condition monitoring node. IC Role / Device Role / Timing Role: Single-chip 5V source with integrated soft-start and PG flag for autonomous wake-up and fault reporting. Use Value: Enables >5-year operation on primary lithium battery; PG flag triggers MCU sleep/wake transitions reliably. |
| GSM Base Station Power | Medical Portable Equipment |
|
Use Scenario: Generating 5V rail for GSM modem, GPS receiver, and cellular antenna driver in vehicle telematics module. IC Role / Device Role / Timing Role: High-efficiency buck converter with SYNC pin synchronized to baseband clock to suppress beat frequencies. Use Value: Reduces conducted EMI in sensitive RF bands; 30ns min-on-time avoids frequency folding during 42V transients. |
Use Scenario: Providing regulated 5V for microcontroller, touch controller, and USB charging circuit in handheld diagnostic device. IC Role / Device Role / Timing Role: Compact, low-noise power stage with <10mVP-P ripple and fast transient response for clean analog measurements. Use Value: Eliminates need for post-regulator LDO; TR/SS pin enables controlled ramp-up to avoid inrush into capacitive USB loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8610ABIMSE#TRPBF | Same package and pinout; improved light-load efficiency (91% vs 82% at 1mA) but higher output ripple in Burst Mode. | Better suited for battery-powered applications where average efficiency dominates over ripple-sensitive analog circuits. | Select LT8610ABIMSE#TRPBF when optimizing for longest battery life in always-on devices; accept higher output capacitance for ripple control. |
| LT8640SIMSE#TRPBF | Higher 6A output, 40V max input, 2.5µA IQ, but larger 20-pin LQFN package and no AEC-Q100 qualification. | Targets industrial PLCs and test equipment requiring higher current and wider temp range (–40°C to +150°C). | Choose LT8640SIMSE#TRPBF only when >3.5A is required and automotive qualification is not mandatory. |
Compared with LT8610ABIMSE#TRPBF, the LT8610AIMSE#TRPBF trades slightly lower light-load efficiency for reduced output ripple and tighter regulation - making it preferable in noise-sensitive applications like audio or precision ADCs. Against LT8640SIMSE#TRPBF, it offers smaller footprint and automotive qualification at the cost of current capability.
Availability
LT8610AIMSE#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor nodes, and portable medical equipment requiring stable component supply with AEC-Q100 assurance and long-term lifecycle support.
Supply support for LT8610AIMSE#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 automotive, industrial, communications, and healthcare markets with precision power, sensing, and signal chain solutions.
The LT8610A series belongs to Analog Devices' Silent Switcher®-compatible monolithic DC/DC regulator product line, engineered specifically for low-EMI, high-efficiency power conversion in space-constrained and noise-sensitive automotive and industrial applications.
FAQ
What is the guaranteed operating junction temperature range for the LT8610AIMSE#TRPBF?
The LT8610AIMSE#TRPBF is guaranteed over the full –40°C to +125°C junction temperature range per its I-grade qualification. This specification is assured by design, characterization, and statistical process controls - enabling use in under-hood automotive environments and industrial enclosures without derating.
Can the LT8610AIMSE#TRPBF be used without an external RT resistor?
No - the LT8610AIMSE#TRPBF requires an external resistor from RT (Pin 3) to GND to set switching frequency. Without it, the oscillator remains unconfigured and the part will not regulate. Typical values range from 18.2kΩ (2MHz) to 221kΩ (180kHz); 60.4kΩ yields ~700kHz as shown in the datasheet's typical application.
How does the BIAS pin improve efficiency in the LT8610AIMSE#TRPBF?
The BIAS pin allows the LT8610AIMSE#TRPBF to source INTVCC current from VOUT instead of VIN when VBIAS ≥ 3.1V. For the 5V version, tying BIAS to VOUT reduces total input current by ~9mA at full load - improving full-load efficiency by up to 1.2% and lowering thermal stress on the input rail.
Is the LT8610AIMSE#TRPBF pin-compatible with the LT8610AEMSE#TRPBF?
Yes - both share identical 16-lead MSOP packaging, pinout, and electrical specifications. The only difference is temperature grade: LT8610AIMSE#TRPBF is rated for –40°C to +125°C (I-grade), while LT8610AEMSE#TRPBF is rated for –40°C to +125°C (E-grade) with less stringent characterization. Both are drop-in replacements in most designs.
What is the purpose of the exposed pad (Pin 17) on the LT8610AIMSE#TRPBF?
The exposed pad (Pin 17) on the LT8610AIMSE#TRPBF is electrically and thermally connected to GND. It must be soldered to a PCB copper pour tied to system ground to achieve the specified θJA = 40°C/W and θJC = 10°C/W - failure to do so risks thermal shutdown under 3.5A load and compromises EMI performance.
LT8610AIMSE#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
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.4V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 0.97V
- Voltage - Output (Max):
- 42V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LT8610AIMSE#TRPBF FAQ
1.How can I place an order for LT8610AIMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8610AIMSE#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 LT8610AIMSE#TRPBF reliable?
The price and inventory of LT8610AIMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8610AIMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8610AIMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8610AIMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8610AIMSE#TRPBF?
LT8610AIMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8610AIMSE#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 LT8610AIMSE#TRPBF?
For technical support, including LT8610AIMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8610AIMSE#TRPBF requirements.
6.How does Aetrix verify that LT8610AIMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8610AIMSE#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 LT8610AIMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8610AIMSE#TRPBF?
All LT8610AIMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8610AIMSE#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 LT8610AIMSE#TRPBF part is unused and in its original packaging.
Return procedure for LT8610AIMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT8610AIMSE#TRPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
