Analog Devices Inc. LT8630 Synchronous Step-Down Switching Regulators

Analog Devices Inc. LT®8630 current mode PWM step-down DC/DC converters with internal synchronous switches provide current for output loads up to 0.6A. The components have a wide input range of 3V to 100V. The devices are suitable for regulating power from a wide variety of sources, including automotive and industrial systems and 36V to 72V telecom supplies. The Analog Devices LT8630 is available in a 20-lead TSSOP package with an exposed pad for low thermal resistance and high voltage lead spacing.

Variable frequency boundary mode switching maximizes efficiency across a wide range of input voltages. Low ripple Burst Mode operation enables high-efficiency operation down to very low output currents while keeping the output ripple below 5mV. The soft-start feature controls the ramp rate of the output voltage, eliminating input current surge during start-up while providing output tracking. A power good flag signals when the output voltage is within ±7.5% of the regulated output. Under voltage lockout can be programmed using the EN/UV pin. Shutdown mode reduces the total quiescent current to <5µA.

Features

3V to 100V input voltage range
Boundary mode switching for highest efficiency
0.8V to 60V output voltage range
Internal synchronous switches
Burst Mode® Operation
- 16µA IQ at 12VI_N to 5V_OUT
- 7µA IQ at 48V_IN to 5V_OUT
Low dropout
Peak current-mode control