LT8630

RECOMMENDED FOR NEW DESIGNS

100V, 0.6A Synchronous Micropower Step-Down High Efficiency Switching Regulator

Analog Devices LT8630 Product Info

10 February 2026 4

Features

Ultrawide Input Voltage Range: 3V to 100V
Boundary Mode Switching for Highest Efficiency
Output Voltage Range: 0.8V to 60V
Internal Synchronous Switches
Burst Mode^® Operation:
- 16μA I_Q at 12V_IN to 5V_OUT
- 7μA I_Q at 48V_IN to 5V_OUT
Low Dropout: 99% Maximum Duty Cycle
Peak Current Mode Control

Programmable Undervoltage Lockout
Power Good Flag
Flexible Output Voltage Tracking
Short-Circuit Protection
Low Shutdown Current: 5μA
Tolerates Pin Open/Short Faults
Thermally Enhanced 20-Lead TSSOP with High Voltage Lead Spacing

Part details & applications

The LT8630 is a current mode PWM step-down DC/DC converter with internal synchronous switches that provide current for output loads up to 0.6A. The wide input range of 3V to 100V makes the LT8630 suitable for regulating power from a wide variety of sources, including automotive and industrial systems and 36V to 72V telecom supplies. 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 also providing output tracking. A power good flag signals when the output voltage is within ±7.5% of the regulated output. Undervoltage lockout can be programmed using the EN/UV pin. Shutdown mode reduces the total quiescent current to < 5μA. The LT8630 is available in a 20-lead TSSOP package with exposed pad for low thermal resistance and high voltage lead spacing.

APPLICATIONS

Telecom Supplies
Distributed Supply Regulation

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