Product Description
This item is the D30V33MAS, which has an adjustable output voltage (4.2 V to 15 V) and no low-voltage cutoff.
The D30V3x line of synchronous buck (step-down) voltage regulators generates lower output voltages from input voltages as high as 45 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters), which makes them much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. These regulators can typically support continuous output currents between 1 A and 4 A, depending on the input voltage and output voltage. In general, the available output current decreases as the input and output voltages increase.
Features
- Input voltage: VOUT to 45 V (input must be higher than the output voltage and is subject to dropout voltage considerations)
- Output voltage: 4.2 V to 15 V (precision-adjustable using built-in 11-turn potentiometer)
- Typical maximum continuous output current: 1.3 A to 4.3 A
- Configurable low-voltage cutoff threshold (precision-adjustable using built-in 11-turn potentiometer)
- Typical efficiency of 80% to 95%, depending on input voltage, output voltage, and load
- Very low dropout voltage
- Switching frequency: ~700 kHz under heavy loads
- Power-save mode that increases light load efficiency by reducing switching frequency
- Low quiescent current
- Enable input for disconnecting the load and putting the regulator into a low-power shutdown state
- “Power good” output indicates when the regulator cannot adequately maintain the output voltage
- Frequency spread spectrum operation that lowers peak EMI noise
- Under-voltage lockout protection
- Soft-start feature limits inrush current and gradually ramps output voltage
- Integrated reverse-voltage protection up to 40 V, over-current and short-circuit protection, over-temperature shutoff
- Two 0.086″ mounting holes for #2 or M2 screws
- Through-holes for 0.1″ headers as well as for 3.5mm-pitch terminal blocks
Dimensions (Without included optional connectors)
- Size: 0.9″ x 1.2″ x 0.3″(22.9 mm x 30.5 mm x 7.7 mm).
- Weight: 4.6 g
General specifications
- Minimum operating voltage: 4.2 V. Operating voltage must be higher than the set output voltage and is subject to dropout voltage considerations.
- Maximum operating voltage: 45 V
- Minimum output voltage: 4.2 V. Output voltage is set by a built-in precision 11-turn potentiometer.
- Maximum output voltage: 15 V
- Continuous output current: 3.3 A. Typical maximum continuous output current at 30 V in and 9 V out. Actual achievable continuous output current is a function of input and output voltages and is limited by thermal dissipation
- Reverse voltage protection?: Y. To -40 V. Connecting supplies over 40 V in reverse can damage the device.
- Maximum quiescent current: 20 mA. While enabled with no load. The quiescent current is a function of the input voltage, output voltage, and cutoff voltage. It is reduced to under 1 mA at higher input voltages and with correspondingly higher cutoff voltage settings or when the regulator is disabled via the enable pin.
- Low-voltage cutoff: none
- Output type: adjustable 4.2V-15V
