Features and Benefits
- Wide Operating Input Voltage Range: 4V to 76V
- Synchronous Operation for Highest Efficiency
- Internal High Side and Low Side Power MOSFETs
- No Compensation Required
- Adjustable 50mA to 500mA Maximum Output Current
- Low Dropout Operation: 100% Duty Cycle
- Low Quiescent Current: 12μA
- Wide Output Range: 0.8V to VIN
- 0.8V ±1% Feedback Voltage Reference
- Precise RUN Pin Threshold
- Internal and External Soft-Start
- Programmable 1.8V, 3.3V, 5V or Adjustable Output
- Few External Components Required
- Low Profile (0.75mm) 3mm × 5mm DFN and Thermally-Enhanced MSE16 Packages
- AEC-Q100 Qualified for Automotive Applications
The LTC3630A is a high efficiency step-down DC/DC converter with internal high side and synchronous power switches that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load.
The LTC3630A can supply up to 500mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC3630A’s combination of Burst Mode® operation, integrated power switches, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents.
With its wide input range of 4V to 76V, the LTC3630A is a robust converter suited for regulating a wide variety of power sources. A feedback comparator output enables multiple LTC3630As to be paralleled in higher current applications.
The LTC3630A is available in the thermally-enhanced 3mm × 5mm DFN and the MSE16 packages.
|LTC3630||4.5V to 65V|
|LTC3630A||4.5V to 76V|
- Industrial Control Supplies
- Medical Devices
- Portable Instruments
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 (2)
Demonstration circuit 2105A is a 500mA output DC/DC power supply. There are two versions: DC2105A-A is a board featuring LTC3630A in the exposed pad MSOP-16 package, with 4V to 76V input range; DC2105A-B is a board featuring LTC3630, with 4V to 65V input range. The LTC3630A operates in a high efficiency Burst Mode® operation and includes internal high and low side switches. The board provides jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. LTC3630A has internal soft-start and a provision for increasing soft-start time.
Demonstration circuit 1877A is a 500mA output DC/DC power supply featuring the LTC3630A (DFN package), with 4V to 76V input range. The LTC3630A features high efficiency Burst Mode® operation and includes internal high and low side power switches. The board provides jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. LTC3630A has internal soft-start and a provision for increasing soft-start time.
Tools & Simulations
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Models for the following parts are available in LTspice:
LTC3630A Companion Parts
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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.