LT3508IFE#PBF

LT3508 is a dual current mode PWM step-down DC/DC converter with internal power switches capable of generating two 1.4A outputs. The wide input voltage range of 3.7V to 36V makes the device suitable for regulating power from a wide variety of sources, including automotive batteries, 24V industrial supplies and unregulated wall adapters. Both converters are synchronized to a single oscillator programmable upto 2.5MHz and run with opposite phases, reducing input ripple current. Its high operating frequency allows the use of small, low cost inductors and ceramic capacitors, resulting in low, predictable output ripple. Each regulator has independent tracking and soft-start circuits and generates a power good signal when its output is in regulation, easing power supply sequencing and interfacing with microcontrollers and DSPs. It is widely used in application such as automotive, DSP power supplies, wall transformer regulation, DSL and cable modems, PCI express etc.

• Synchronizable over the full frequency range
• Anti-phase switching reduces ripple
• Output adjustable down to 800mV
• Accurate programmable undervoltage lockout
• Minimum operating voltage (VIN1) is 3.4V typ
• VIN1 quiescent current is 4.3mA typ
• Switching frequency is 1MHz typ
• SHDN threshold voltage is 2.63V typ
• Operating temperature is –40°C to 125°C
• Packaging style is 16-lead plastic TSSOP

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party