LT3988IMSE#PBF

LT3988 is a dual, current mode, step-down, DC/DC converter that accepts two input voltages upto 60V (80V transient), which may be driven from separate supplies or can be cascaded. High efficiency switches are included on the die along with internal boost diodes and loop compensation. Both converters are capable of generating 1A outputs, are synchronized to a single oscillator programmable upto 2.5MHz, and run with opposite phases, reducing input ripple current. The device’s high switching frequency allows the use of small inductors and capacitors, resulting in a very small dual output supply. The constant switching frequency, combined with low impedance ceramic capacitors, results in low, predictable output ripple. A current mode PWM architecture provides fast transient response with cycle-by-cycle current limiting. It is widely used in application such as commercial vehicle battery regulation, industrial supplies, distributed supply regulation etc.

• Wide input range is 4.1V to 60V
• Overvoltage lockout protects circuit through 80V transients
• Short circuit robust
• Integrated boost diodes
• Integrated loop compensation
• Anti-phase switching reduces ripple
• Uses small inductors and ceramic capacitors
• Quiescent current is 2.7mA typ at (VFB1 = 0.9V, VBD = 0V)
• Operating temperature is -40°C to 125°C
• Packaging style is 16-lead plastic MSOP

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