LTC3621HMS8E-5#PBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LTC3621HMS8E-5#PBF is a step-down DC-DC switching regulator with 2.7 V to 17 V input range, fixed 5 V output at 1 A, in an automotive-grade 8-pin MSOP EP package with current-mode control and pulse-skip mode for efficient low-power operation.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LTC3621HMS8E-5#PBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.2200(MOQ 19)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2.7 V to 17 V input range covering automotive battery, 12 V bus, and Li-Ion battery powered systems
- Fixed 5 V output at 1 A with current-mode control for fast transient response in automotive sensor rails
- Pulse-skip mode for high efficiency at light loads, extending battery life in always-on automotive subsystems
- Compact 8-pin MSOP EP package with exposed pad for improved thermal dissipation in tight PCB layouts
Applications
The LTC3621HMS8E-5#PBF is designed for automotive ECU subsystems, industrial sensor nodes, and portable instruments that need a regulated 5 V at 1 A from a wide 2.7 V to 17 V input bus. Its pulse-skip mode control maintains high efficiency at light loads below 100 mA, making it well-suited for always-on keep-alive circuits in vehicle electronics. The automotive-grade package rating and wide input range allow direct connection to a 12 V vehicle battery with standard fly-back transient protection, powering microcontrollers, CAN transceivers, and sensor front-ends without a separate LDO stage.
Specifications
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1662 |
| YTEOL | 10 |
| Analog IC - Other Type | SWITCHING REGULATOR |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE SKIP MODE |
| Input Voltage-Max | 17V |
| Input Voltage-Min | 2.7V |
| Input Voltage-Nom | 12V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 5.075V |
| Output Voltage-Min | 4.925V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Surface Mount | YES |
| Switcher Configuration | BUCK |
| Switching Frequency-Max | 1160kHz |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input voltage range and output specification of the LTC3621HMS8E-5#PBF?
The LTC3621HMS8E-5#PBF accepts an input voltage from 2.7 V to 17 V and provides a fixed 5 V regulated output at up to 1 A continuous current. This wide 2.7 V to 17 V input range accommodates automotive 12 V battery supplies, stepped-down bus rails, and Li-Ion battery stacks while delivering a stable 5 V rail for microcontrollers, CAN transceivers, and other 5 V peripherals.
How does the pulse-skip mode of the LTC3621HMS8E-5#PBF benefit battery-powered and automotive always-on applications?
In pulse-skip mode, the LTC3621HMS8E-5#PBF reduces switching frequency at light loads, cutting switching losses and maintaining high efficiency when current demand drops below approximately 10 mA to 50 mA. This directly extends battery life in automotive keep-alive circuits and IoT sensor nodes that spend most of their time in sleep mode drawing under 1 mA from the 5 V rail, compared to forced-PWM regulators that maintain full switching frequency regardless of load.
What control topology does the LTC3621HMS8E-5#PBF use and why does it matter for transient response?
The LTC3621HMS8E-5#PBF uses current-mode control, which provides an inherent inner current feedback loop that improves line and load transient response compared to voltage-mode converters. Current-mode control reduces output voltage deviation during sudden load steps of up to 1 A on the 5 V rail, and it simplifies loop compensation design by achieving stability with smaller output capacitor values, typically 10 µF to 22 µF in this package configuration.
In which automotive sensor or ECU designs is the LTC3621HMS8E-5#PBF a preferred step-down regulator choice?
The LTC3621HMS8E-5#PBF is preferred in automotive ECU power trees that need to step a 12 V vehicle battery down to a clean 5 V rail at 1 A for microcontrollers, CAN or LIN transceivers, and MEMS sensors. Its 17 V maximum input handles load-dump transients after standard TVS clamping, while the MSOP EP 8-pin package fits within the tight board area of body control modules, door node ECUs, and ADAS sensor power supplies where a 1 A step-down rail in under 10 mm2 PCB footprint is required.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 19+ | $5.5900 | $106.21 |
| 100+ | $5.0126 | $501.26 |
| 250+ | $4.5875 | $1146.88 |
| 1000+ | $4.2200 | $4220.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”