Features and Benefits
- 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 IQ at 12VIN to 5VOUT
- 7μA IQ at 48VIN to 5VOUT
- 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
- AEC-Q100 Qualified for Automotive 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.
- Automotive Supplies
- Telecom Supplies
- Distributed Supply Regulation
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Demonstration circuit 2504A is a step-down converter featuring LT8630. The LT8630 is a monolithic, variable frequency, current mode synchronous step-down switching regulator. The demo board is designed for 12V output from a 13V to 100V input. The wide input range makes it suitable for regulating power from a variety of sources, including automotive, industrial systems and telecom supplies. The power switch, compensation and other necessary circuits are inside of the LT8630 to minimize external components and simplify design.
Documentation & Resources
R530 Reliability Data3/26/2018
DC2504A - Demo Manual11/14/2016
Tools & Simulations
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.