LT1766IFE-5#PBF

LT1766IFE-5#PBF is a 200KHz monolithic buck switching regulator that accepts input voltages up to 60V. A high-efficiency 1.5A, 0.2ohm switch is included on the die along with all necessary oscillator, control, and logic circuitry. A current-mode control architecture delivers fast transient response and excellent loop stability. Special design techniques and a new high-voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuitry and by utilizing a supply boost capacitor to saturate the power switch. Patented circuitry maintains peak switch current over the full duty cycle range. A shutdown pin reduces supply current to 25μA, and the device can be externally synchronized from 228KHz to 700KHz with logic-level inputs. Applications include high voltage industrial and automotive, portable computers, battery-powered systems, battery chargers, and distributed power systems.

• Wide input voltage range from 5.5V to 60V, cycle-by-cycle current limiting
• Easily synchronizable, 5V fixed output voltage
• Peak switch current rating maintained over full duty cycle range
• Switch current limit is 2A typical at (VC open, boost = VIN + 5V, FB = 1V or VSENSE = 4.1V)
• Switch on-resistance is 0.2ohm typical at (ISW = 1.5A, boost = VIN + 5V, TJ = 25°C)
• Switch frequency is 200KHz typical at (VC set to give DC = 50%, TJ = 25°C)
• Input supply current (IVIN) is 1.4mA typical at (VBIAS = 5V, TJ = 25°C)
• Shutdown supply current is 25μA typical at (SHDN = 0V, VIN ≤ 60V, SW = 0V, VC open)
• Temperature range from -40°C to 125°C
• 16-lead plastic TSSOP 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