The LT3508IUF#PBF is a dual current mode PWM step-down DC/DC converter designed to deliver two outputs of 1.4A each. It operates within a wide input voltage range of 3.7V to 36V, making it suitable for various applications including automotive power supplies and industrial systems. The device features an adjustable switching frequency from 250kHz to 2.5MHz, which can be synchronized across both converters to minimize input ripple current. The LT3508IUF#PBF incorporates internal power switches and offers independent tracking, soft-start, and power good circuits, facilitating effective power supply sequencing. It can adjust output voltage down to 800mV and is packaged in a compact 24-lead QFN format, which is advantageous for space-constrained designs. The device also includes protection features such as cycle-by-cycle current limit, thermal shutdown, and a low shutdown current of less than 2OºA, enhancing its reliability in battery-powered applications. Engineers considering this product should note its operational temperature range of -40¬8C to 125¬8C, making it suitable for demanding environments.
Manufacturer: Linear Technology
Win Source Part Number: 781097-LT3508IUF#PBF
Packaging: Tube
Operating Temperature Range: -40°C ~ 125°C (TJ)
Package: 24-WFQFN Exposed Pad
Mounting: SMD
Output Type: Adjustable
Function: Step-Down
Topology: Buck
Frequency - Switching: 920kHz ~ 1.06MHz
Number of Outputs: 2
Output Configuration: Positive
Synchronous Rectifier: No
Output Current: 1.4A
Family Name: LT3508
Output Voltage: 0.8V
Categories: Integrated Circuits (ICs)
Manufacturer Package: 24-QFN-EP (4x4)
Output Voltage MAX: 35.28V
Input Voltage MIN: 3.7V
Voltage Input MAX: 36V
Alternative Parts (Cross-Reference): LT3508EUF#TR; LT3508IUF; LT3508IUF#TR; LT3508EUF;
Introduction Date: January 22, 2007
ECCN: EAR99
Country of Origin: Malaysia
Estimated EOL Date: 2031
Halogen Free: Compliant
Popularity: Medium
Fake Threat In the Open Market: 40 pct.
Supply and Demand Status: Limited
| Win Source Electronics | |
|---|---|
| Product Category | IC Switching Voltage Regulators |
| Product Number | 781097-LT3508IUF#PBF |
| Product Name | PMIC - PMIC - Voltage Regulators - DCDC Switching Regulators - LT3508IUF#PBF |
| Configuration / Function | Buck; Buck |
| Output Voltage Type | Adjustable / Variable; Adjustable |
| Package Type | Other; 24-WFQFN Exposed Pad |
| Special Features | Multiple Outputs; Synchronous Rectification |
| Output Voltage | 0.8000 volts |