ANALOG DEVICES LT3470HTS8#TRPBF DC-DC Switching Buck Regulator, Adjustable, 4V to 40V in, 1.25V to 16V out, TSOT-23-8

LT3470HTS8#TRPBF is a micropower step-down DC/DC converter that integrates a 300mA power switch, catch diode, and boost diode. The LT3470 combines Burst Mode and continuous operation to allow the use of tiny inductors and capacitors while providing a low ripple output to loads of up to 200mA. With its wide input range of 4V to 40V, the LT3470 can regulate a wide variety of power sources, from 2-cell Li-Ion batteries to unregulated wall transformers and lead-acid batteries. The quiescent current in regulation is just 26µA in a typical application while a zero current shutdown mode disconnects the load from the input source, simplifying power management in battery-powered systems. Fast current limiting and hysteretic control protect the LT3470 and external components against shorted outputs, even at 40V input. Applications include automotive battery regulation, power for portable products, distributed supply regulation, industrial supplies, wall transformer regulation.

• Integrated boost and catch diodes, input voltage range from 4V to 40V
• Output voltage range from 1.25V to 16V, hysteretic mode control
• Quiescent current from VIN is 0.1µA typical at (active-low VSHDN = 0.2V, TA = 25°C)
• Minimum switch off-time is 500ns typical at (TA = 25°C)
• Switch leakage current is 0.7µA typical at (TA = 25°C)
• Switch top current limit is 325mA typical at (VFB = 0V, TA = 25°C)
• BOOST pin current is 7mA typical at (ISW = 100mA, TA = 25°C)
• FB comparator trip voltage is 1.250V typical at (VFB falling)
• FB pin bias current is 35nA typical at (VFB = 1V, TA = 25°C)
• Operating temperature range from -40°C to 150°C, 8-lead plastic TSOT-23 package

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