My Inquiry
My Account
Analog Devices Inc. LT8610AEMSE-3.3#PBF
- Part No.:
- LT8610AEMSE-3.3#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8610AEMSE-3.3#PBF.pdf
- Description:
- IC REG BUCK 3.3V 3.5A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:253
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LT8610AEMSE-3.3#PBF from Analog Devices is a 42V input, 3.5A synchronous step-down regulator with fixed 3.3V output, 2.5µA quiescent current in Burst Mode, 30ns minimum on-time, and <10mVP-P output ripple. It operates across –40°C to 125°C and integrates internal feedback resistors (14.3MΩ) for stable low-noise power delivery in automotive infotainment and industrial sensor nodes.
For engineers reviewing the LT8610AEMSE-3.3#PBF datasheet, LT8610AEMSE-3.3#PBF pinout, LT8610AEMSE-3.3#PBF application, or LT8610AEMSE-3.3#PBF equivalent, key selection criteria include ultralow IQ regulation at 12V→3.3V, AEC-Q100 qualification, MSOP-16 thermal performance (θJA = 40°C/W), and compatibility with 3.3V bias-sourced INTVCC operation.
Technical Context
The LT8610AEMSE-3.3#PBF employs constant-frequency current-mode control with RT-programmable switching (200kHz–2.2MHz) and frequency foldback during start-up or overload. Its integrated 0.97V reference regulates VOUT via internal 14.3MΩ divider, eliminating external FB resistors.
Burst Mode operation enables 2.5µA IQ by disabling gate drivers between energy bursts; SYNC pin selects between Burst Mode (low), pulse-skipping (high), or external clock synchronization. PG flag asserts when VOUT reaches ±9% of 3.3V and remains valid above 3.4V VIN regardless 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 3.3V ±1.2% - factory-trimmed internal divider eliminates external resistor error and layout sensitivity. |
| Max Output Current | 3.5A continuous - sufficient for powering microcontrollers, FPGAs, and RF transceivers from single-stage conversion. |
| Quiescent Current | 2.5µA at 12VIN→3.3VOUT - enables >10-year battery life in always-on IoT sensors and telematics modules. |
| Min On-Time | 30ns - allows high step-down ratios (e.g., 42V→3.3V at 2MHz) without pulse skipping or instability. |
| Output Ripple | <10mVP-P - meets noise-sensitive analog supply requirements for ADCs, audio codecs, and precision amplifiers. |
| Thermal Rating | –40°C to 125°C junction - qualified per AEC-Q100 Grade 1 for under-hood automotive use. |
Pinout & Package
LT8610AEMSE-3.3#PBF uses a thermally enhanced 16-lead plastic MSOP package with exposed GND pad (Pin 17) requiring PCB soldering for θJC(PAD) = 10°C/W thermal path. Package dimensions: 4.0mm × 3.0mm × 0.85mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SYNC (1) | External clock interface | Ground for low-ripple Burst Mode; tie to INTVCC or logic high for pulse-skipping; accept 200kHz–2.2MHz external clocks. |
| TR/SS (2) | Soft-start & tracking control | Capacitor-programmable voltage ramp rate; internal 2.2µA pull-up enables simple soft-start timing; pulled low during fault. |
| RT (3) | Frequency programming | Resistor-to-GND sets switching frequency (e.g., 60.4kΩ = 700kHz); enables EMI optimization and inductor size reduction. |
| EN/UV (4) | Enable & undervoltage lockout | 1.00V rising threshold with 40mV hysteresis - supports programmable VIN brownout protection using external resistor divider. |
| VIN (5,6) | Main power input | Dual pins reduce trace inductance; require local 1µF ceramic bypass close to pins for stable high-frequency switching. |
| NC (7) | No connect | Not internally bonded - must remain unconnected to avoid parasitic coupling or thermal stress. |
| GND (8) | Power ground return | Return path for bottom switch; must be tied to exposed pad (Pin 17) and input capacitor negative terminal for minimal loop inductance. |
| VOUT (16) | Regulated output | Fixed 3.3V output node connected to internal 14.3MΩ feedback divider - no external resistors needed; decouple with ≥47µF low-ESR ceramic. |
| SW (9,10,11) | Switch node | High-current connection to inductor and BST capacitor; requires minimized copper area to suppress EMI and ringing. |
| BST (12) | Bootstrap supply | Drives top MOSFET gate above VIN; requires 0.1µF X7R ceramic placed adjacent to IC for reliable high-side conduction. |
| INTVCC (13) | Internal 3.4V regulator | Bypassed with ≥1µF ceramic; supplies gate drivers and control logic; draws current from BIAS if >3.1V, else from VIN. |
| BIAS (14) | Bias supply input | Tie directly to VOUT for 3.3V outputs to reduce VIN current and improve efficiency; bypass with 1µF if sourced externally. |
| PG (15) | Power good flag | Open-drain output signaling VOUT within ±9% of 3.3V; active low during startup, fault, or VIN <3.4V - used for system sequencing and watchdog reset. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including infotainment head units and ADAS camera modules operating at –40°C to 125°C. |
| Ultralow 2.5µA quiescent current | Enables direct battery connection in always-on systems without auxiliary LDOs or complex power gating circuitry. |
| 30ns minimum on-time | Supports high-frequency, high-ratio conversion (e.g., 42V→3.3V at 2MHz) while maintaining stability and transient response. |
| Integrated 14.3MΩ feedback divider | Eliminates external resistor network errors, reduces BOM count, and improves long-term output voltage accuracy over temperature. |
| Programmable soft-start via TR/SS | Prevents inrush current and output overshoot during power-up; capacitor value directly controls ramp time (e.g., 10nF ≈ 10ms). |
| BIAS pin for efficiency optimization | Reduces VIN current draw by sourcing INTVCC from VOUT, improving light-load efficiency by up to 5% in 3.3V-output configurations. |
Applications
| Automotive Infotainment Power | Industrial Sensor Node Supply |
|---|---|
Use Scenario: Powering ARM-based SoCs and display controllers in vehicle head units with cold-crank (4.5V) to load-dump (42V) transients. IC Role / Device Role / Timing Role: Primary 3.3V buck converter delivering regulated power to processor cores, DDR memory, and touch controller interfaces. Use Value: 2.5µA IQ extends backup battery life during vehicle sleep mode; AEC-Q100 qualification ensures reliability across 15-year automotive service life. | Use Scenario: Providing stable 3.3V rail for wireless sensor transceivers (BLE/Zigbee) in remote condition-monitoring equipment. IC Role / Device Role / Timing Role: Main system regulator converting 12V/24V field bus to low-noise 3.3V for MCU, radio, and analog front-end. Use Value: <10mVP-P ripple prevents RF desense and ADC quantization errors; 30ns min-on-time supports compact 2MHz designs with small inductors. |
| Medical Portable Diagnostic Device | Test & Measurement Instrumentation |
Use Scenario: Battery-powered ultrasound probe requiring ultraquiet 3.3V supply for analog beamforming and digital signal processing. IC Role / Device Role / Timing Role: Low-noise intermediate regulator stepping down from main Li-ion pack (8–12V) to precision 3.3V analog domain. Use Value: Burst Mode IQ of 2.5µA enables >72-hour runtime on single-cell Li-ion; integrated feedback eliminates resistor drift-induced offset in critical analog paths. | Use Scenario: Rack-mounted data acquisition module needing clean 3.3V for high-resolution SAR ADCs and FPGA configuration. IC Role / Device Role / Timing Role: Fixed-output buck supplying low-noise digital core voltage with tight line/load regulation (<0.02%/V, <0.1% load). Use Value: 0.97V internal reference and ±1.2% output tolerance ensure accurate ADC reference scaling; PG flag enables precise power sequencing with FPGA configuration logic. |
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 |
|---|---|---|---|
| LT8610ABEMSE-3.3#PBF | Higher light-load efficiency (91% vs 82% at 1mA), but increased output ripple in Burst Mode due to 1A burst current limit. | Better suited for battery-powered devices where runtime dominates ripple sensitivity (e.g., portable meters). | Select LT8610ABEMSE-3.3#PBF when maximizing battery life at sub-10mA loads outweighs need for lowest possible ripple. |
| LT8640S-3.3#PBF | Wider 3.4V–65V input range, higher 4A output, and integrated compensation; lacks AEC-Q100 qualification. | Targeted at industrial 48V systems and PoE-powered equipment rather than automotive environments. | Choose LT8640S-3.3#PBF for 48V DC distribution or non-automotive applications requiring >3.5A or >42V input capability. |
Compared with LT8610ABEMSE-3.3#PBF, the LT8610AEMSE-3.3#PBF delivers lower output ripple for noise-sensitive analog circuits, while LT8640S-3.3#PBF offers extended input range and higher current for industrial infrastructure - making LT8610AEMSE-3.3#PBF optimal for AEC-Q100-compliant, low-ripple 3.3V automotive subsystems.
Availability
LT8610AEMSE-3.3#PBF is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor networks, and portable medical diagnostics requiring stable component supply, AEC-Q100 compliance, and ultralow quiescent current performance.
Supply support for LT8610AEMSE-3.3#PBF 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.
The LT8610A/LT8610AB series was designed specifically for automotive and industrial applications demanding ultralow IQ, wide input range, and robust thermal performance in compact MSOP packages.
FAQ
What is the guaranteed operating temperature range for LT8610AEMSE-3.3#PBF?
The LT8610AEMSE-3.3#PBF is rated for –40°C to 125°C junction temperature and is qualified per AEC-Q100 Grade 1. This rating is guaranteed across the full range, with thermal derating applied above 125°C per Analog Devices' reliability guidelines. The device uses an exposed-pad MSOP package to maintain safe junction temperatures under 3.5A continuous load.
Can LT8610AEMSE-3.3#PBF operate with input voltage below 3.4V?
No - the absolute minimum input voltage for LT8610AEMSE-3.3#PBF is 3.4V, as specified in the Absolute Maximum Ratings table. Below this, the internal regulators cannot sustain bias, and the device will not regulate. For 3.3V output, the minimum practical VIN is ~3.6V to account for dropout; attempting operation at 3.3V input will result in unregulated output and potential PG flag assertion.
How does the BIAS pin improve efficiency in LT8610AEMSE-3.3#PBF?
The BIAS pin allows LT8610AEMSE-3.3#PBF to source INTVCC current from the 3.3V output instead of VIN when VBIAS ≥ 3.1V. This reduces VIN current draw by ~9mA at full load, improving light- and heavy-load efficiency by up to 5% - especially valuable in 3.3V-output configurations where BIAS can be directly tied to VOUT with no additional components.
Is LT8610AEMSE-3.3#PBF pin-compatible with LT8610ABEMSE-3.3#PBF?
Yes - LT8610AEMSE-3.3#PBF and LT8610ABEMSE-3.3#PBF share identical MSOP-16 pinouts, thermal pad layout, and footprint. They differ only in internal Burst Mode behavior (current limit, ripple, efficiency), so board-level replacement is electrically and mechanically feasible without layout changes.
What is the purpose of the TR/SS pin in LT8610AEMSE-3.3#PBF?
The TR/SS pin in LT8610AEMSE-3.3#PBF provides dual functionality: soft-start control (via capacitor to GND) and output voltage tracking (when driven by an external reference). An internal 2.2µA current source charges the capacitor to program output ramp rate; during faults, it's actively pulled low to disable regulation - enabling controlled startup and interoperability with multi-rail systems.
LT8610AEMSE-3.3#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.4V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- 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
LT8610AEMSE-3.3#PBF FAQ
1.How can I place an order for LT8610AEMSE-3.3#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8610AEMSE-3.3#PBF 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 LT8610AEMSE-3.3#PBF reliable?
The price and inventory of LT8610AEMSE-3.3#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8610AEMSE-3.3#PBF is usually 5 days.
3.What payment methods are accepted for LT8610AEMSE-3.3#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8610AEMSE-3.3#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8610AEMSE-3.3#PBF?
LT8610AEMSE-3.3#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8610AEMSE-3.3#PBF 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 LT8610AEMSE-3.3#PBF?
For technical support, including LT8610AEMSE-3.3#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8610AEMSE-3.3#PBF requirements.
6.How does Aetrix verify that LT8610AEMSE-3.3#PBF is sourced from the original manufacturer or authorized distributors?
All LT8610AEMSE-3.3#PBF 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 LT8610AEMSE-3.3#PBF meets industry standards.
7.What is the process for return or replacement of LT8610AEMSE-3.3#PBF?
All LT8610AEMSE-3.3#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8610AEMSE-3.3#PBF, 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 LT8610AEMSE-3.3#PBF part is unused and in its original packaging.
Return procedure for LT8610AEMSE-3.3#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LT8610AEMSE-3.3#PBF 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…
