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Analog Devices Inc. LT8619EMSE-5#TRPBF
- Part No.:
- LT8619EMSE-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8619EMSE-5#TRPBF.pdf
- Description:
- IC REG BUCK 5V 1.2A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,733
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Product details
Overview
LT8619EMSE-5#TRPBF from Analog Devices is a 60V, 1.2A synchronous monolithic buck regulator with fixed 5V output, 6µA quiescent current in Burst Mode, 30ns minimum on-time, and Power Good flag. It operates from 3V to 60V input and delivers regulated 5V at up to 1.2A for automotive infotainment power rails.
For engineers reviewing the LT8619EMSE-5#TRPBF datasheet, LT8619EMSE-5#TRPBF pinout, LT8619EMSE-5#TRPBF application, or LT8619EMSE-5#TRPBF equivalent, key selection criteria include ultralow IQ at light load, AEC-Q100 qualification, 5V fixed-output accuracy (±0.5%), SYNC-controlled mode selection, and thermal performance in the 16-lead MSOP package with exposed pad.
Technical Context
The LT8619EMSE-5#TRPBF uses peak current mode control with internal compensation and a programmable oscillator (300kHz–2.2MHz via RT resistor). Its fixed 5V output eliminates external feedback resistors, and the OUT pin serves as both output sense and regulation node.
Burst Mode operation enables 6µA IQ at no load while maintaining ≤10mVP-P ripple; forced continuous mode is activated via SYNC pin tied to INTVCC or an external clock, enabling synchronization and eliminating low-frequency switching artifacts in noise-sensitive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 60V - supports 12V/24V/48V automotive and industrial bus voltages without pre-regulation. |
| Output Voltage | Fixed 5.0V ±0.5% - eliminates feedback divider, reduces BOM count, ensures stable USB-peripheral or MCU core rail. |
| Max Output Current | 1.2A continuous - sufficient for powering DSPs, CAN transceivers, or display controllers in compact modules. |
| Quiescent Current | 6µA at 12VIN→5VOUT - enables always-on functionality in battery-backed systems with multi-year standby life. |
| Min On-Time | 30ns - allows high VIN-to-VOUT step-down (e.g., 48V→5V) at 2MHz switching without pulse skipping. |
| Power Good Flag | ±7.5% VOUT window, 35µs delay - provides reliable system reset signaling for microcontrollers and FPGAs. |
| Thermal Resistance | θJA = 40°C/W (MSOP) - enables 1.2A operation at +85°C ambient with minimal heatsinking. |
Pinout & Package
LT8619EMSE-5#TRPBF is housed in a thermally enhanced 16-lead plastic MSOP package with exposed pad (Pin 17 = GND), θJA = 40°C/W, θJC = 10°C/W. The exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, 3, 13 | NC | No internal connection - leave unconnected or tie to GND per layout best practice. |
| Pin 2 | VIN | Main input supply (3V–60V); requires local 10µF ceramic bypass capacitor adjacent to pin. |
| Pin 4 | EN/UV | Enable/shutdown with 1.0V threshold; used for VIN undervoltage lockout or controlled start-up. |
| Pin 5 | RT | Resistor-to-ground sets switching frequency (300kHz–2.2MHz); determines inductor size and EMI profile. |
| Pin 6 | PG | Open-drain Power Good output - signals VOUT within ±7.5% of 5V; requires external pull-up. |
| Pin 7 | SYNC | Mode control: GND = Burst Mode, float = pulse-skipping, INTVCC/clock = forced continuous/synchronized. |
| Pins 9–10 | OUT | Fixed 5V output sense and regulation node - connects directly to output capacitor and load. |
| Pin 11 | BIAS | Bias supply input - tie to VOUT ≥3.3V to reduce VIN current draw and improve efficiency. |
| Pin 12 | INTVCC | Internal 3.3V LDO output - powers control circuitry; decouple with ≥1µF ceramic to GND. |
| Pin 14 | BST | Bootstrap supply for high-side switch - requires 0.1µF ceramic capacitor between BST and SW. |
| Pins 15–16 | SW | Switch node - connects to inductor and BST capacitor; must be minimized in PCB area for EMI reduction. |
| Pin 17 (Exposed Pad) | GND | Thermal and electrical ground - must be soldered to large PCB copper area for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Rated for automotive applications (–40°C to +125°C junction), supporting under-hood and infotainment use cases. |
| Ultralow Quiescent Current | 6µA IQ in Burst Mode enables >10-year battery life in always-on telematics modules powered from 12V lead-acid. |
| Fixed 5V Output Architecture | Eliminates external feedback resistors and associated tolerance errors, improving output accuracy and reducing component count. |
| Low-EMI Silent Switcher® Design | Integrated split-pin SW/BOOT layout and fast, clean switching edges minimize conducted and radiated emissions. |
| Robust Protection Suite | Includes overvoltage shutdown (OV), power-good monitoring, thermal shutdown, and bottom-switch reverse-current limiting (0.55A). |
Applications
| Automotive Infotainment Power | Industrial Sensor Hub Supply |
|---|---|
Use Scenario: Powering LCD display controller, audio codec, and touch interface in vehicle head unit with 12V battery input. IC Role / Device Role / Timing Role: Primary 5V buck regulator delivering 1.2A with Burst Mode for low-power standby and forced continuous mode during active UI rendering. Use Value: 6µA quiescent current extends battery backup runtime; ±0.5% output accuracy ensures stable I²C/SPI peripheral operation. | Use Scenario: Providing regulated 5V rail for multi-sensor node (temperature, pressure, humidity) in factory automation PLC module. IC Role / Device Role / Timing Role: Central DC/DC converter accepting wide-input 12–48V industrial bus and rejecting line transients via 60V rating. Use Value: 30ns min on-time supports 48V→5V conversion at 2MHz, minimizing inductor size and enabling compact 2-layer PCB design. |
| Telematics Control Unit (TCU) | Rail-to-Rail Industrial I/O Module |
Use Scenario: Supplying 5V to cellular modem, GNSS receiver, and CAN FD transceiver in connected vehicle TCU with strict low-IQ requirements. IC Role / Device Role / Timing Role: Always-on 5V source with PG flag enabling safe processor boot sequencing and brown-out detection. Use Value: Power Good assertion within 660µs of EN/UV rise ensures deterministic firmware initialization; AEC-Q100 grade guarantees reliability across temperature cycles. | Use Scenario: Generating isolated 5V auxiliary rail for analog front-end and digital isolators in DIN-rail mounted I/O module. IC Role / Device Role / Timing Role: High-efficiency, low-noise buck stage preceding isolated DC/DC converters, operating in forced continuous mode to avoid audible noise. Use Value: Synchronization capability (via SYNC pin) allows alignment with system clock to prevent beat frequencies in sensitive measurement circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3639EMSE#TRPBF | 40V max input, 1.5A, 12µA IQ, adjustable output (0.8V–15V), no fixed 5V option | Requires external feedback resistors; lacks AEC-Q100 qualification | Select when adjustable output or higher current is needed, but not for drop-in 5V automotive replacement. |
| MPQ4420AGL-A-Z | 40V max input, 2A, 25µA IQ, fixed 5V, QFN-10 package, no SYNC or PG | No Power Good flag, no synchronization, higher IQ, non-automotive qualified | Use in cost-sensitive industrial applications where PG and sync are unnecessary and 2A output is required. |
Compared with LTC3639EMSE#TRPBF and MPQ4420AGL-A-Z, the LT8619EMSE-5#TRPBF uniquely combines AEC-Q100 qualification, 6µA IQ, fixed 5V output, and SYNC-controlled mode flexibility - making it optimal for space-constrained, safety-aware automotive subsystems requiring deterministic power sequencing and ultra-low standby consumption.
Availability
LT8619EMSE-5#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment, telematics control units, industrial sensor hubs, and rail-to-rail I/O modules requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for LT8619EMSE-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 LT8619 product line delivers high-efficiency, ultralow-quiescent-current monolithic buck regulators for harsh-environment applications where input voltage range, thermal robustness, and reliability are critical - especially in automotive and industrial power systems.
FAQ
What is the output voltage tolerance of the LT8619EMSE-5#TRPBF?
The LT8619EMSE-5#TRPBF provides a fixed 5.0V output with guaranteed accuracy of ±0.5% over temperature and line conditions. This is specified as 4.975V to 5.025V at 25°C and 4.925V to 5.075V over the full –40°C to +125°C junction temperature range, ensuring stable operation for USB peripherals and logic interfaces without external trimming.
Does the LT8619EMSE-5#TRPBF require external feedback resistors?
No, the LT8619EMSE-5#TRPBF does not require external feedback resistors. It integrates an internal 10MΩ feedback divider that regulates the OUT pin to 5V. This simplifies design, improves accuracy by eliminating resistor tolerance errors, and reduces bill-of-materials count compared to adjustable-output buck regulators like the base LT8619.
How does the SYNC pin affect operating mode in the LT8619EMSE-5#TRPBF?
The SYNC pin on the LT8619EMSE-5#TRPBF selects among three distinct operating modes: grounding enables Burst Mode (6µA IQ), floating enables pulse-skipping mode, and connecting to INTVCC or an external clock forces continuous conduction mode. This flexibility allows designers to optimize efficiency, EMI, or transient response based on real-time system demands without changing hardware.
Is the LT8619EMSE-5#TRPBF qualified for automotive applications?
Yes, the LT8619EMSE-5#TRPBF is AEC-Q100 qualified for automotive applications. It is rated for operation from –40°C to +125°C junction temperature and manufactured with controlled processes meeting automotive reliability standards. This makes it suitable for under-dash, infotainment, and telematics systems where extended temperature range and long-term stability are mandatory.
What thermal considerations apply to the LT8619EMSE-5#TRPBF in the MSOP package?
The LT8619EMSE-5#TRPBF in the 16-lead MSOP package has θJA = 40°C/W and θJC = 10°C/W. To maintain safe operation at 1.2A, the exposed pad (Pin 17) must be soldered to a substantial PCB ground plane. Without adequate copper area, junction temperature rise exceeds limits; with proper layout, full 1.2A load is sustainable at +85°C ambient.
LT8619EMSE-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):
- 3V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 1.2A
- Frequency - Switching:
- 300kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- 0°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LT8619EMSE-5#TRPBF FAQ
1.How can I place an order for LT8619EMSE-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8619EMSE-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 LT8619EMSE-5#TRPBF reliable?
The price and inventory of LT8619EMSE-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 LT8619EMSE-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8619EMSE-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8619EMSE-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8619EMSE-5#TRPBF?
LT8619EMSE-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8619EMSE-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 LT8619EMSE-5#TRPBF?
For technical support, including LT8619EMSE-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8619EMSE-5#TRPBF requirements.
6.How does Aetrix verify that LT8619EMSE-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8619EMSE-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 LT8619EMSE-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8619EMSE-5#TRPBF?
All LT8619EMSE-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8619EMSE-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 LT8619EMSE-5#TRPBF part is unused and in its original packaging.
Return procedure for LT8619EMSE-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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