ANALOG DEVICES LT3692EUH#PBF DC-DC Switching Buck Regulator, Adjustable, 3 to 36V in, 3.5A Out, QFN-32

LT3692EUH#PBF is a dual current-mode PWM step-down DC/DC converter featuring two internal 3.8A switches. Each channel comes with independent input voltage, shutdown, feedback, soft-start, current limit, and comparator pins, simplifying complex power supply tracking and sequencing requirements. To optimize efficiency and component size, both converters offer a programmable maximum current limit and can be synchronized to either a common external clock input or a resistor-settable fixed 250KHz to 2.25MHz internal oscillator. Additionally, a frequency divider is provided for channel 1 to further optimize component size. At all frequencies, a 180° phase relationship between channels is maintained, reducing voltage ripple and component size. A clock output is available for synchronizing multiple regulators. Independent channel operation can be programmed using the SHDN pin. Applications for this converter include automotive supplies and distributed supply regulation.

• Input voltage range from 3V to 36V, OVLO protects circuit through 60V transients
• Die temperature monitor, independent synchronized switching frequencies optimize component size
• Antiphase Switching, outputs can be paralleled, flexible output voltage tracking
• Enhanced short-circuit protection, low dropout: 95% maximum duty cycle
• VIN1 shutdown current is 6µA typical at (VSHDN = 0V)
• VIN1 quiescent current is 4mA typical at (VFB1/2 = 0.9V, TA = 25°C)
• Feedback voltage regulation is 806mV typical at (VVIN1/2 = 3 to 40V, VVC1/2 = 0.6 to 1.6V)
• Switching frequency is 1MHz typical at (RRT/SYNC = 28k, TA = 25°C)
• Switch leakage current Ch 1/2 is 1µA typical at (VSW1/2 = 0V)
• Operating junction temperature range from -40°C to 125°C, 32-lead plastic QFN 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