LT1766IGN#PBF

LT1766 is a 200KHz monolithic buck switching regulator that accept input voltages up to 60V. A high efficiency 1.5A, 0.2ohm switch is included on the die along with all the 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 effi ciency over a wide input range. Effi ciency 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.

• Wide input range from 5.5V to 60V
• 1.5A peak switch current
• Constant 200KHz switching frequency
• Peak switch current rating maintained over full duty cycle range
• Low effective supply current: 2.5mA
• Low shutdown current: 25μA
• 1.2V feedback reference voltage
• Easily synchronizable, cycle-by-cycle current limiting
• Available in 16-lead plastic SSOP package

Notes

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