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Analog Devices Inc. LT8619IMSE-5#TRPBF
- Part No.:
- LT8619IMSE-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LT8619IMSE-5#TRPBF.pdf
- Description:
- IC REG BUCK 5V 1.2A 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,188
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Product details
Overview
LT8619IMSE-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 AEC-Q100 qualification for automotive systems. It integrates top/bottom power switches, internal compensation, and a power-good flag, enabling compact 12V/24V/48V vehicle power supplies.
For engineers reviewing the LT8619IMSE-5#TRPBF datasheet, LT8619IMSE-5#TRPBF pinout, LT8619IMSE-5#TRPBF application, or LT8619IMSE-5#TRPBF equivalent, key selection criteria include its 5V fixed output, 60V input range, ultralow IQ operation, thermal performance in MSOP-16 package, and compatibility with automotive-grade reliability requirements.
Technical Context
The LT8619IMSE-5#TRPBF uses peak-current-mode control with internal compensation, enabling fast transient response and stable loop behavior with small inductors. Its oscillator supports programmable frequency (300kHz–2.2MHz) via RT resistor or external synchronization through the SYNC pin.
Burst Mode operation reduces quiescent current to 6µA at no load while maintaining ≤10mVP-P output ripple; forced continuous mode is enabled by pulling SYNC high, and pulse-skipping mode is entered when SYNC floats. The EN/UV pin provides accurate 1V enable threshold with 40mV hysteresis for VIN undervoltage lockout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 60V - supports wide-range automotive and industrial inputs including 12V, 24V, and 48V battery systems. |
| Output Voltage | Fixed 5V ±2.5% - eliminates external feedback resistors; regulated directly at OUT pin. |
| Max Output Current | 1.2A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in embedded systems. |
| Quiescent Current | 6µA at no load (12VIN→3.3VOUT) - enables always-on functionality in low-power automotive modules. |
| Min On-Time | 30ns - allows high step-down ratios (e.g., 48V→5V) at high switching frequencies without pulse skipping. |
| Power Good Flag | PG asserts when VOUT is within ±7.5% of 5V - provides system-level sequencing and fault detection capability. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive environments per AEC-Q100 Grade I. |
Pinout & Package
LT8619IMSE-5#TRPBF is housed in a thermally enhanced 16-lead plastic MSOP package with exposed pad (Pin 17 = GND), θJA = 40°C/W. The exposed pad must be soldered to PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, 3, 13 | No Connect (NC) | Not internally bonded; leave unconnected or tie to GND for mechanical stability. |
| Pin 2 (VIN) | Main Input Supply | Supplies internal circuitry and top switch; requires local 10µF ceramic bypass capacitor. |
| Pin 4 (EN/UV) | Enable / UVLO Input | 1V threshold enables startup; falling below 0.56V shuts down IC, drawing <0.6µA from VIN. |
| Pin 5 (RT) | Frequency Set Resistor | Resistor to GND sets switching frequency (300kHz–2.2MHz); required for all operating modes. |
| Pin 6 (PG) | Open-Drain Power Good | Active-low signal indicates VOUT is within ±7.5% of 5V; requires external pull-up (INTVCC/VOUT/≤6V). |
| Pin 7 (SYNC) | Sync Mode Control | GND = Burst Mode; float = pulse-skipping; INTVCC or clock = forced continuous/synchronized operation. |
| Pins 9–10 (OUT) | Fixed 5V Output Sense | Internal 10MΩ divider regulates OUT pin to 5V; connect directly to output capacitor. |
| Pin 11 (BIAS) | Bias Supply Input | Tie to VOUT ≥3.1V to reduce VIN current draw and improve efficiency at light loads. |
| Pin 12 (INTVCC) | Internal 3.3V LDO Output | Powers internal logic/drivers; max 20mA; decouple with ≥1µF ceramic capacitor to GND. |
| Pin 14 (BST) | Bootstrap Capacitor Node | Requires 0.1µF ceramic capacitor between BST and SW for high-side gate drive. |
| Pins 15–16 (SW) | Switch Node | Connects to inductor and BST capacitor; keep trace short and low-inductance for EMI reduction. |
| Pin 17 (GND) | Power Ground | Exposed thermal pad; must be soldered to PCB ground plane for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow Quiescent Current | 6µA in Burst Mode enables >10-year battery life in always-on automotive modules (e.g., telematics, CAN nodes). |
| Fixed 5V Output Architecture | Eliminates external feedback resistors and compensation components, reducing BOM count and layout complexity. |
| AEC-Q100 Grade I Qualification | Validated for –40°C to +125°C operation with full temperature-range parametric guarantees - suitable for engine bay deployment. |
| Low-EMI Silent Switcher® Design | Integrated split-pin SW/GND layout and fast, controlled switching edges minimize conducted and radiated emissions. |
| Programmable Frequency & Sync | RT-resistor tuning (300kHz–2.2MHz) and external clock sync avoid noise-sensitive bands (e.g., AM radio, CISPR 25 limits). |
Applications
| Automotive Infotainment Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers USB-C PD controllers, display drivers, and audio codecs in head units requiring stable 5V rail with low standby consumption. IC Role / Device Role / Timing Role: Primary 5V buck converter delivering up to 1.2A with Burst Mode IQ optimization during vehicle sleep states. Use Value: Enables <5µA system standby current while maintaining fast wake-up response and meeting ISO 16750-2 cold-crank requirements. | Use Scenario: Supplies image sensor, ISP, and serializer ICs in rear-view or surround-view cameras mounted near hot engine compartments. IC Role / Device Role / Timing Role: High-input-voltage (up to 60V) buck regulator with AEC-Q100 qualification and thermal robustness in MSOP-16 package. Use Value: Sustains regulation during 48V transients and cold-crank dips (down to 3V), eliminating need for pre-regulator stages. |
| Commercial Vehicle Telematics | Industrial IoT Edge Controller |
Use Scenario: Provides primary 5V rail for GPS/GNSS receivers, cellular modems, and CAN transceivers in fleet management gateways. IC Role / Device Role / Timing Role: Wide-input buck regulator supporting 12V/24V/48V truck/bus battery architectures with integrated PG signaling for firmware health monitoring. Use Value: Reduces external component count vs discrete solutions while meeting SAE J1455 vibration and thermal cycling requirements. | Use Scenario: Powers ARM Cortex-M7 microcontrollers, Ethernet PHYs, and isolated RS-485 transceivers in DIN-rail-mounted edge gateways. IC Role / Device Role / Timing Role: Industrial-grade 5V buck converter with –40°C to +125°C operation, low EMI, and programmable frequency for noise-sensitive factory floor environments. Use Value: Eliminates need for external EMI filters in Class A industrial installations, lowering total solution cost and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT8640S-5#TRPBF | Higher 4A output current; same 5V fixed output; improved 2.5µA IQ; supports spread-spectrum modulation. | Better suited for higher-power infotainment SoCs or multi-rail systems needing margin; larger DFN package. | Select when >1.2A load or stricter EMI compliance (CISPR 32) is required; not drop-in due to different pinout and thermal pad layout. |
| MPQ4420AGL-AEC1-Z | 5V fixed output; 2A rating; 17µA IQ; AEC-Q100 qualified; requires external feedback network for 5V setting. | Lacks integrated 5V divider; needs external resistors; lower efficiency at light loads; no SYNC pin for frequency control. | Consider for cost-sensitive automotive modules where Burst Mode IQ is less critical and layout space allows external resistors. |
Compared with LT8619IMSE-5#TRPBF, LT8640S-5#TRPBF offers higher current and lower IQ but requires PCB redesign, while MPQ4420AGL-AEC1-Z trades off precision and flexibility for lower BOM cost - making LT8619IMSE-5#TRPBF optimal for space-constrained, ultra-low-IQ 1.2A automotive rails.
Availability
LT8619IMSE-5#TRPBF is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and commercial vehicle telematics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LT8619IMSE-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 synchronous buck regulators optimized for automotive and industrial applications demanding wide input voltage range, AEC-Q100 reliability, and minimal external components.
FAQ
What is the output voltage accuracy of the LT8619IMSE-5#TRPBF?
The LT8619IMSE-5#TRPBF provides a fixed 5V output with guaranteed accuracy of ±2.5% over the full –40°C to +125°C junction temperature range and input voltage range of 6V to 50V. This is achieved via an internal 10MΩ feedback divider referenced to a trimmed bandgap, eliminating external resistor tolerance errors and drift.
Does the LT8619IMSE-5#TRPBF require external feedback resistors?
No, the LT8619IMSE-5#TRPBF does not require external feedback resistors. It features an internal 10MΩ resistor divider that fixes the output to 5V, connecting directly to the OUT pin. This simplifies design, improves accuracy, and reduces component count compared to adjustable versions like the LT8619IMSE#TRPBF.
How does the SYNC pin affect operating mode in the LT8619IMSE-5#TRPBF?
The SYNC pin configures three distinct operating modes in the LT8619IMSE-5#TRPBF: grounding it enables Burst Mode (6µA IQ); floating it enables pulse-skipping mode (higher IQ, lower ripple); connecting it to INTVCC or an external clock forces continuous conduction mode with synchronization capability. Each mode impacts efficiency, ripple, and EMI profile.
Is the LT8619IMSE-5#TRPBF qualified for automotive applications?
Yes, the LT8619IMSE-5#TRPBF is AEC-Q100 Grade I qualified (–40°C to +125°C), with full parametric guarantees across temperature, lifetime reliability testing, and failure analysis per automotive standards. It is specifically designed for under-hood and cabin applications including infotainment, telematics, and ADAS subsystems.
What thermal considerations apply to the LT8619IMSE-5#TRPBF in MSOP-16 package?
The LT8619IMSE-5#TRPBF in 16-lead MSOP has θJA = 40°C/W and θJC = 10°C/W. To maintain safe junction temperature, the exposed pad (Pin 17) must be soldered to a large PCB copper area tied to GND. For 1.2A continuous operation at 60VIN→5VOUT, ≥4 cm² of 2-oz copper with 4+ thermal vias is recommended.
LT8619IMSE-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:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LT8619IMSE-5#TRPBF FAQ
1.How can I place an order for LT8619IMSE-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT8619IMSE-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 LT8619IMSE-5#TRPBF reliable?
The price and inventory of LT8619IMSE-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 LT8619IMSE-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT8619IMSE-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT8619IMSE-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT8619IMSE-5#TRPBF?
LT8619IMSE-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT8619IMSE-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 LT8619IMSE-5#TRPBF?
For technical support, including LT8619IMSE-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT8619IMSE-5#TRPBF requirements.
6.How does Aetrix verify that LT8619IMSE-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT8619IMSE-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 LT8619IMSE-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT8619IMSE-5#TRPBF?
All LT8619IMSE-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT8619IMSE-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 LT8619IMSE-5#TRPBF part is unused and in its original packaging.
Return procedure for LT8619IMSE-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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