Date: 10/09/2009

36V, 3.5A, 2.4MHz step-down switching regulator IC with 75µA quiescent current

Linear has introduced the "H-grade" version of LT3680, a 3.5A, 36V step-down switching regulator IC with burst mode operation to keep quiescent current under 75uA. The LT3680 is ideal for load dump and cold-crank conditions found in automotive applications and the H-grade devices are ideal for automotive and industrial applications.

The key features of LT3680 are,

Input voltage range: 3.6V to 36V
3.5A maximum output current
Low ripple (<15mVP-P) burst mode operation: IQ = 75µA at 12VIN to 3.3VOUT
Adjustable switching frequency: 200kHz to 2.4MHz
Low shutdown current: IQ < 1µA
Integrated boost diode
Synchronizable between 250kHz to 2MHz
Power good flag
Saturating switch design: 95mO on-resistance
0.790V feedback reference voltage
Output voltage: 0.79V to 30V
Thermal protection
Soft-start capability

And the suggested applications include automotive battery regulation, power for portable products, distributed supply regulation, industrial supplies, and wall transformer regulation.

Operating temperature range: 150°C

Package: Small 10-Pin thermally enhanced MSOP and (3mm × 3mm) DFN package

Price:
LT3680HMSE: Starts at each $5.35 for 1k pieces
Availability: Available from stock.
For more details visit www.linear.com