Part Details for LTC3521IUF#TRPBF by Linear Technology
Results Overview of LTC3521IUF#TRPBF by Linear Technology
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Energy and Power Systems
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LTC3521IUF#TRPBF Information
LTC3521IUF#TRPBF by Linear Technology is a Switching Regulator or Controller.
Switching Regulator or Controllers are under the broader part category of Power Circuits.
A power circuit delivers electricity in order to operate a load for an electronic device. Power circuits include transformers, generators and switches. Read more about Power Circuits on our Power Circuits part category page.
Part Details for LTC3521IUF#TRPBF
LTC3521IUF#TRPBF CAD Models
LTC3521IUF#TRPBF Part Data Attributes
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LTC3521IUF#TRPBF
Linear Technology
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Datasheet
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LTC3521IUF#TRPBF
Linear Technology
LTC3521 - 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters; Package: QFN; Pins: 24; Temperature Range: -40°C to 85°C
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| Rohs Code | Yes | |
| Part Life Cycle Code | Transferred | |
| Ihs Manufacturer | LINEAR TECHNOLOGY CORP | |
| Part Package Code | QFN | |
| Package Description | 4 X 4 MM, LEAD FREE, PLASTIC, MO-220WGGD, QFN-24 | |
| Pin Count | 24 | |
| Manufacturer Package Code | UF | |
| Reach Compliance Code | compliant | |
| ECCN Code | EAR99 | |
| HTS Code | 8542.39.00.01 | |
| Additional Feature | ALSO OPERATES IN ADJUSTABLE MODE FROM 1.8 TO 5.25 V; ALSO OPERATES IN CURRENT MODE | |
| Analog IC - Other Type | SWITCHING REGULATOR | |
| Control Mode | VOLTAGE-MODE | |
| Control Technique | PULSE WIDTH MODULATION | |
| Input Voltage-Max | 5.5 V | |
| Input Voltage-Min | 1.8 V | |
| Input Voltage-Nom | 3.6 V | |
| JESD-30 Code | S-PQCC-N24 | |
| JESD-609 Code | e3 | |
| Length | 4 mm | |
| Number of Functions | 1 | |
| Number of Terminals | 24 | |
| Operating Temperature-Max | 125 °C | |
| Operating Temperature-Min | -40 °C | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | HVQCCN | |
| Package Shape | SQUARE | |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | |
| Qualification Status | Not Qualified | |
| Seated Height-Max | 0.8 mm | |
| Surface Mount | YES | |
| Switcher Configuration | BUCK-BOOST | |
| Switching Frequency-Max | 1350 kHz | |
| Technology | CMOS | |
| Temperature Grade | AUTOMOTIVE | |
| Terminal Finish | MATTE TIN | |
| Terminal Form | NO LEAD | |
| Terminal Pitch | 0.5 mm | |
| Terminal Position | QUAD | |
| Width | 4 mm |
LTC3521IUF#TRPBF Frequently Asked Questions (FAQ)
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The maximum input voltage that can be applied to the LTC3521IUF is 18V, but it's recommended to keep it below 15V for optimal performance and reliability.
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To optimize inductor selection, consider the inductor's saturation current, DC resistance, and core loss. A good starting point is to choose an inductor with a saturation current at least 1.5 times the peak current, and a DC resistance less than 100mΩ. Also, consider using a shielded inductor to reduce EMI.
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To minimize EMI and noise, keep the switching node (SW pin) away from sensitive analog nodes, use a solid ground plane, and keep the input and output capacitors close to the IC. Also, use a Kelvin connection for the output voltage sense lines and keep them away from the switching node.
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To ensure the LTC3521IUF operates within the safe operating area (SOA), monitor the junction temperature, input voltage, and output current. Keep the junction temperature below 125°C, input voltage below 15V, and output current below 2A. Also, ensure the device is not operated in a way that causes excessive voltage or current stress.
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The SYNC pin allows the LTC3521IUF to synchronize its switching frequency with an external clock signal. This can be useful in reducing EMI and noise in systems with multiple switching regulators. To use the SYNC pin, connect it to a clock signal with a frequency between 300kHz and 2.2MHz, and ensure the clock signal is clean and has a low jitter.