D30V30Fx Step-Down Voltage Regulators

The D30V30Fx family of 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 2 A and 4 A, depending on the input voltage and output voltage. The graph below shows maximum output currents that these regulators can deliver continuously at room temperature in still air and without additional heat sinking:

These regulators also have very low dropout voltages:

Step-Down Voltage Regulator D30V30Fx, assembled on breadboard.

The regulators have reverse voltage protection up to 40 V, input under-voltage lockout, over-current protection, and short-circuit protection. A thermal shutdown feature also helps prevent damage from overheating and a soft-start feature limits the inrush current and gradually ramps the output voltage on startup.

Regulator Output voltage Typical max output current1 Input voltage range2 Size Special features Price
#4891: D30V30F3 3.3 V 3.7 A 3.3 V – 45 V 0.7″ × 0.8″ Reverse voltage protection3,
input under-voltage lockout,
over-current protection,
short-circuit protection,
thermal shutdown,
soft-start
$12.95
#4892: D30V30F5 5 V 3.4 A 5 V – 45 V $12.95
#4893: D30V30F6 6 V 3.3 A 6 V – 45 V $13.95
#4894: D30V30F7 7.5 V 3 A 7.5 V – 45 V $13.95
#4895: D30V30F9 9 V 2.9 A 9 V – 45 V $13.95
#4896: D30V30F12 12 V 2.8 A 12 V – 45 V $13.95
#4897: D30V30F15 15 V 2.7 A 15 V – 45 V $13.95
1Typical continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.
3Reverse voltage protection up to -40 V. Connecting supplies over 40 V in reverse can damage the device.

Products in category “D30V30Fx Step-Down Voltage Regulators”

Pololu item #: 4891
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:
Output voltage Typical max current output1 Input voltage range2
3.3 V 3.7 A 3.3 V – 45 V

1 Typical continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.


Pololu item #: 4892
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:
Output voltage Typical max current output1 Input voltage range2
5 V 3.4 A 5 V – 45 V

1 Typical continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.


Pololu item #: 4893
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:
Output voltage Typical max current output1 Input voltage range2
6 V 3.3 A 6 V – 45 V

1 Typical continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.


Pololu item #: 4894
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:
Output voltage Typical max current output1 Input voltage range2
7.5 V 3 A 7.5 V – 45 V

1 Typical continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.


Pololu item #: 4895
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:
Output voltage Typical max current output1 Input voltage range2
9 V 2.9 A 9 V – 45 V

1 Typical continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.


Pololu item #: 4896
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:
Output voltage Typical max current output1 Input voltage range2
12 V 2.8 A 12 V – 45 V

1 Typical continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.


Pololu item #: 4897
Brand: Pololu supply outlook
Status: Active and Preferred 
RoHS 3 compliant
Out of stock.
Quantity:
Output voltage Typical max current output1 Input voltage range2
15 V 2.7 A 15 V – 45 V

1 Typical continuous output current at 30 V in. Actual achievable continuous output current is a function of input voltage and is limited by thermal dissipation. See the output current graphs on the product pages for more information.
2 Minimum input voltage is subject to dropout voltage considerations; see the dropout voltage section of product pages for more information.


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