LTC3779EFE#TRPBF Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LTC3779EFE#TRPBF is an automotive-grade single-output synchronous step-down/step-up DC/DC controller operating from 4.5 V to 150 V input at 275 kHz switching frequency. Current-mode PWM control with output adjustable from 1.2 V to 150 V suits wide input-range 4-switch buck-boost designs. Available in a 31-pin TSSOP-EP package with worldwide stock and shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 31
- Lifecycle
- ACTIVE
- Datasheet
- LTC3779EFE#TRPBF Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $8.1300(MOQ 12)
- Temp Range
- ?°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LTC3779EFE#TRPBF?
- Wide 4.5 V to 150 V input range enables direct regulation from automotive battery, truck, or high-voltage industrial rails
- Adjustable output from 1.2 V to 150 V in a 4-switch synchronous buck-boost topology for seamless step-down and step-up operation
- AEC-Q100 automotive qualification and 275 kHz current-mode PWM control deliver reliable performance across -40°C to +125°C temperature range
What is LTC3779EFE#TRPBF used for?
LTC3779EFE#TRPBF is designed for automotive DC/DC conversion where the input voltage can swing above or below the regulated output, such as 48 V mild-hybrid systems supplying a 12 V rail. It also suits industrial equipment powered directly from high-voltage DC buses up to 150 V, including motor drives and battery management systems. The AEC-Q100-qualified device is a strong fit for infotainment, ADAS power rails, and rugged transportation electronics requiring stable output across wide supply variation.
What are the specifications of LTC3779EFE#TRPBF?
| Pbfree Code | No |
| Manufacturer Package Code | 05-08-1865 |
| YTEOL | 9 |
| Additional Feature | VOUT=(1.2-150 VOLT) |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 150V |
| Input Voltage-Min | 4.5V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PDSO-G38 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Voltage-Max | 150V |
| Output Voltage-Min | 1.2V |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Surface Mount | YES |
| Switcher Configuration | BUCK-BOOST |
| Switching Frequency-Max | 550kHz |
| Technology | CMOS |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| 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 | Thailand |
Where can I find the LTC3779EFE#TRPBF datasheet?
LTC3779EFE#TRPBF Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for LTC3779EFE#TRPBF?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the LTC3779EFE#TRPBF support for automotive battery applications?
The LTC3779EFE#TRPBF accepts input voltages from 4.5 V to 150 V, making it suitable for 12 V, 24 V, and 48 V automotive battery systems. This broad range allows a single design to handle cold-crank conditions as low as 4.5 V and load-dump transients approaching 150 V without additional protection circuitry.
How does the 4-switch buck-boost topology of the LTC3779EFE#TRPBF benefit designs where input and output voltages overlap?
The 4-switch synchronous buck-boost topology lets the LTC3779EFE#TRPBF seamlessly regulate an output of 1.2 V to 150 V regardless of whether the input is higher or lower than the target. This avoids output glitches during input transitions — critical in 48 V mild-hybrid systems where the bus voltage can cross the 12 V output rail during regenerative braking events.
What switching frequency does the LTC3779EFE#TRPBF use and how does it affect filter component sizing?
The device switches at 275 kHz, a frequency that balances efficiency and passive component size. At 275 kHz, inductors and output capacitors are significantly smaller than at 100 kHz designs, reducing BOM cost and board area while keeping switching losses manageable across the full -40°C to +125°C operating temperature range.
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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.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 12+ | $17.5390 | $210.47 |
| 15+ | $16.9543 | $254.31 |
| 19+ | $10.7800 | $204.82 |
| 100+ | $8.8375 | $883.75 |
| 1000+ | $8.1300 | $8130.00 |
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