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Analog Devices Inc. LT8610AEMSE-5#TRPBF
- Part No.:
- LT8610AEMSE-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8610AEMSE-5#TRPBF.pdf
- Description:
- IC REG BUCK 5V 3.5A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,357
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Product details
Overview
LT8610AEMSE-5#TRPBF from Analog Devices is a 42V, 3.5A synchronous step-down regulator with 2.5µA quiescent current in Burst Mode, fixed 5V output, and 30ns minimum on-time. It operates across 3.4V–42V input, delivers <10mVP-P output ripple, and is AEC-Q100 qualified for automotive power supplies.
For engineers reviewing the LT8610AEMSE-5#TRPBF datasheet, LT8610AEMSE-5#TRPBF pinout, LT8610AEMSE-5#TRPBF application, or LT8610AEMSE-5#TRPBF equivalent, key selection criteria include ultralow IQ regulation at 12V→5V, 5V fixed-output accuracy (±0.6%), thermal performance in MSOP-16EP, and compatibility with BIAS-pin efficiency optimization.
Technical Context
The LT8610AEMSE-5#TRPBF uses constant-frequency current-mode control with internal 0.97V reference and programmable switching frequency (200kHz–2.2MHz via RT pin). Its synchronous architecture integrates top/bottom NMOS switches with 120mΩ/65mΩ on-resistance and supports pulse-skipping or external synchronization via SYNC pin.
Burst Mode operation enables 2.5µA IQ regulation by disabling internal circuitry between switching bursts; light-load efficiency is enhanced by sourcing INTVCC from BIAS ≥3.1V. The device features ±9% PG flag accuracy, 1V EN/UV threshold with 40mV hysteresis, and soft-start/tracking via TR/SS pin with 2.2µA internal pull-up.
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 ±0.6% - internally trimmed resistor divider eliminates external feedback components and reduces BOM count. |
| Max Output Current | 3.5A continuous - sufficient for powering microcontrollers, sensors, and communication ICs in compact designs. |
| Quiescent Current | 2.5µA at no load, 12V→5V - enables always-on systems (e.g., telematics, ADAS) with multi-year battery life. |
| Min On-Time | 30ns - allows high step-down ratios (e.g., 42V→5V at 2MHz) without pulse skipping or instability. |
| Switching Frequency | 200kHz to 2.2MHz - adjustable via RT pin; higher frequencies reduce inductor size but increase switching losses. |
| Thermal Rating | –40°C to +125°C junction - validated for under-hood automotive environments and industrial enclosures. |
Pinout & Package
LT8610AEMSE-5#TRPBF is housed in a thermally enhanced 16-lead plastic MSOP package with exposed pad (Pin 17), requiring soldering to PCB for θJA = 40°C/W thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SYNC (1) | External clock input | Enables synchronization to external clock or forces pulse-skipping mode when tied high; must not be left floating. |
| TR/SS (2) | Soft-start & tracking control | Capacitor-programmed voltage ramp rate during startup; internal 2.2µA pull-up enables simple RC soft-start. |
| RT (3) | Frequency programming | Resistor-to-ground sets switching frequency from 200kHz to 2.2MHz; determines inductor size and EMI profile. |
| EN/UV (4) | Enable & undervoltage lockout | 1.00V rising threshold with 40mV hysteresis - allows precise input voltage monitoring and system-level shutdown control. |
| VIN (5,6) | Main power input | Dual pins reduce trace resistance and inductance; require local 1µF ceramic bypass close to pins. |
| NC (7) | No connect | Not bonded internally - must remain unconnected to avoid parasitic coupling. |
| GND (8) | Power ground return | Return path for bottom switch; must be tied to exposed pad (Pin 17) for optimal thermal and EMI performance. |
| VOUT (16) | Regulated 5V output | Fixed 5V output node with internal 12.5MΩ feedback divider - eliminates external resistors and improves accuracy. |
| SW (9,10,11) | Switch node | High-current connection to inductor and BST capacitor; requires minimal PCB copper area to reduce EMI. |
| BST (12) | Bootstrap supply | Drives top NMOS gate; requires 0.1µF ceramic capacitor placed adjacent to IC for reliable high-side switching. |
| INTVCC (13) | Internal 3.4V regulator output | Bypassed with ≥1µF ceramic; powers internal logic; draws current from BIAS if >3.1V, else from VIN. |
| BIAS (14) | Efficiency optimization input | When tied to VOUT (≥3.3V), reduces VIN current draw and improves light-load efficiency. |
| PG (15) | Power good flag | Open-drain output signaling ±9% regulation window and fault conditions; valid above 3.4V VIN regardless of EN state. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualification | Validated for automotive applications including engine control units and infotainment systems per Grade 1 (–40°C to +125°C). |
| Ultralow quiescent current | 2.5µA IQ enables >10-year battery life in always-on vehicle subsystems without compromising regulation stability. |
| Fixed 5V output with precision | ±0.6% output tolerance over line, load, and temperature eliminates need for external trimming or calibration. |
| Robust overload protection | Safely tolerates inductor saturation and delivers controlled current limiting up to 6.7A peak without latch-off. |
| Low EMI Silent Switcher® architecture | Integrated split-pin layout and fast, clean switching edges minimize conducted and radiated emissions in sensitive RF environments. |
Applications
| Automotive Infotainment Power Supply | GSM Base Station RF Module |
|---|---|
Use Scenario: Powering DSPs, display controllers, and USB peripherals in head units with cold-crank (4.5V) and load-dump (42V) conditions. IC Role / Device Role / Timing Role: Primary 5V buck converter delivering regulated power with burst-mode IQ <3µA during standby. Use Value: Enables 24/7 connectivity without draining 12V battery; fixed 5V output simplifies design and improves long-term stability vs. adjustable regulators. | Use Scenario: Providing clean 5V rail to LTE/5G RF transceivers in outdoor base stations operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC/DC stage preceding LDOs for analog RF sections. Use Value: 30ns min-on-time supports 42V→5V conversion at 2MHz, minimizing inductor size while maintaining <10mVP-P ripple for signal integrity. |
| Industrial PLC I/O Module | Medical Portable Diagnostic Device |
Use Scenario: Powering isolated CAN transceivers and microcontroller peripherals in DIN-rail mounted controllers with 24V nominal input. IC Role / Device Role / Timing Role: Main 5V supply with EN/UV pin used for brown-out detection and graceful shutdown. Use Value: 1V EN threshold with 40mV hysteresis ensures reliable start-up and hold-off during line sags; AEC-Q100 reliability extends field lifetime. | Use Scenario: Battery-powered ultrasound or glucose monitor requiring multi-year operation on coin cell or Li-ion. IC Role / Device Role / Timing Role: Primary step-down regulator enabling ultra-low-power sleep modes with 2.5µA IQ. Use Value: Fixed 5V output avoids resistor-divider leakage current, preserving battery capacity; MSOP-16EP package supports compact, thermally managed layouts. |
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-5#TRPBF | Higher light-load efficiency (91% vs. 82% at 1mA, 12V→5V) but increased output ripple in Burst Mode. | Better suited for battery-powered devices where efficiency dominates ripple concerns. | Select LT8610ABEMSE-5#TRPBF when maximizing runtime outweighs strict ripple requirements. |
| LM5164QPWPRQ1 | 4.5V–65V input, 3A max, 1.5µA IQ, but adjustable output only - requires external feedback resistors. | Preferred for designs needing programmable outputs or wider input range beyond 42V. | Choose LM5164QPWPRQ1 when flexibility in output voltage or extended input range is required. |
Compared with LT8610ABEMSE-5#TRPBF, the LT8610AEMSE-5#TRPBF offers lower output ripple at the cost of reduced light-load efficiency; versus LM5164QPWPRQ1, it provides fixed 5V output with superior IQ and smaller solution size but narrower input range.
Availability
LT8610AEMSE-5#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLCs, GSM RF modules, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8610AEMSE-5#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.
The LT8610A/LT8610AB series was designed specifically for automotive and industrial applications demanding ultralow quiescent current, wide input voltage range, and robust thermal performance in compact packages.
FAQ
What is the guaranteed output voltage accuracy of the LT8610AEMSE-5#TRPBF over temperature and load?
The LT8610AEMSE-5#TRPBF guarantees 5.00V output with ±0.6% tolerance over full –40°C to +125°C junction temperature and 0–3.5A load range, as confirmed by internal 12.5MΩ feedback divider trimming and line/load regulation specs of 0.004%/V and ±0.15% respectively.
Can the LT8610AEMSE-5#TRPBF operate with input voltage below 5V?
Yes - the LT8610AEMSE-5#TRPBF supports minimum input voltage of 3.4V, enabling operation during cold-crank events in 12V automotive systems. Dropout is 200mV at 1A, so it maintains regulation down to ~5.2V input at full load.
How does the BIAS pin improve efficiency in the LT8610AEMSE-5#TRPBF?
The BIAS pin on the LT8610AEMSE-5#TRPBF sources INTVCC current from VOUT (≥3.3V) instead of VIN, reducing input supply current by up to 9mA at 1A load and improving light- and full-load efficiency - especially critical in high-input-voltage applications like 24V/36V industrial rails.
Is the LT8610AEMSE-5#TRPBF pin-compatible with the LT8610AEMSE-3.3#TRPBF?
No - although both share the same MSOP-16EP package and pinout, the LT8610AEMSE-5#TRPBF has an internal 12.5MΩ feedback divider tied to VOUT (Pin 16), whereas the -3.3 version uses 14.3MΩ; they are functionally identical except for fixed output voltage and cannot be interchanged without board revision.
What thermal derating applies to the LT8610AEMSE-5#TRPBF at 125°C ambient?
At 125°C ambient, the LT8610AEMSE-5#TRPBF's maximum continuous output current is reduced due to junction temperature limits. With θJA = 40°C/W and max TJ = 125°C, power dissipation must stay ≤0W - meaning full 3.5A operation requires active cooling or lower ambient; typical derating begins above 85°C ambient.
LT8610AEMSE-5#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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.4V
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 5V
- 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-5#TRPBF FAQ
1.How can I place an order for LT8610AEMSE-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8610AEMSE-5#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 LT8610AEMSE-5#TRPBF reliable?
The price and inventory of LT8610AEMSE-5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT8610AEMSE-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8610AEMSE-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8610AEMSE-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8610AEMSE-5#TRPBF?
LT8610AEMSE-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8610AEMSE-5#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 LT8610AEMSE-5#TRPBF?
For technical support, including LT8610AEMSE-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8610AEMSE-5#TRPBF requirements.
6.How does Aetrix verify that LT8610AEMSE-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8610AEMSE-5#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 LT8610AEMSE-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8610AEMSE-5#TRPBF?
All LT8610AEMSE-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8610AEMSE-5#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 LT8610AEMSE-5#TRPBF part is unused and in its original packaging.
Return procedure for LT8610AEMSE-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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