D36V28Fx Step-Down Voltage Regulators

The D36V28Fx family of buck (step-down) voltage regulators generates lower output voltages from input voltages as high as 50 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.

Step-Down Voltage Regulator D36V28Fx, assembled on breadboard.

This family includes six versions with fixed output voltages ranging from 3.3 V to 12 V:

The regulators have reverse voltage protection up to 40 V, output undervoltage and overvoltage protection, 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.

Products in category “D36V28Fx Step-Down Voltage Regulators”

Pololu item #: 3781
Brand: Pololu supply outlook
Status: Rationed (Active and Preferred) 
RoHS 3 compliant
Out of stock.
Quantity:

This small synchronous switching step-down (or buck) regulator takes an input voltage from 4.5 V to 50 V and efficiently reduces it to 3.3 V. The board measures only 0.7″ × 0.8″ yet delivers typical maximum continuous output currents between 3.2 A and 4.5 A, depending on the input voltage, which makes it well suited for powering moderate loads like sensors or small motors. An optional enable input with a precise cutoff threshold can be used to put the regulator in a low-power state with a current draw of 10 µA to 20 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output that indicates when the regulator cannot adequately maintain the output voltage. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Pololu item #: 3782
Brand: Pololu supply outlook
Status: Rationed (Active and Preferred) 
RoHS 3 compliant
Out of stock.
Quantity:

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 50 V and efficiently reduces it to 5 V. The board measures only 0.7″ × 0.8″ yet delivers typical maximum continuous output currents between 2.5 A and 4 A, depending on the input voltage, which makes it well suited for powering moderate loads like sensors or small motors. An optional enable input with a precise cutoff threshold can be used to put the regulator in a low-power state with a current draw of 10 µA to 20 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output that indicates when the regulator cannot adequately maintain the output voltage. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Pololu item #: 3783
Brand: Pololu supply outlook
Status: Rationed (Active and Preferred) 
RoHS 3 compliant
Out of stock.
Quantity:

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 50 V and efficiently reduces it to 6 V. The board measures only 0.7″ × 0.8″ yet delivers typical maximum continuous output currents between 2 A and 4 A, depending on the input voltage, which makes it well suited for powering moderate loads like sensors or small motors. An optional enable input with a precise cutoff threshold can be used to put the regulator in a low-power state with a current draw of 10 µA to 20 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output that indicates when the regulator cannot adequately maintain the output voltage. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Pololu item #: 3784
Brand: Pololu supply outlook
Status: Rationed (Active and Preferred) 
RoHS 3 compliant
Out of stock.
Quantity:

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 50 V and efficiently reduces it to 7.5 V. The board measures only 0.7″ × 0.8″ yet delivers typical maximum continuous output currents between 2 A and 3.7 A, depending on the input voltage, which makes it well suited for powering moderate loads like sensors or small motors. An optional enable input with a precise cutoff threshold can be used to put the regulator in a low-power state with a current draw of 10 µA to 20 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output that indicates when the regulator cannot adequately maintain the output voltage. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Pololu item #: 3785
Brand: Pololu supply outlook
Status: Rationed (Active and Preferred) 
RoHS 3 compliant
Out of stock.
Quantity:

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 50 V and efficiently reduces it to 9 V. The board measures only 0.7″ × 0.8″ yet delivers typical maximum continuous output currents between 2.3 A and 3.4 A, depending on the input voltage, which makes it well suited for powering moderate loads like sensors or small motors. An optional enable input with a precise cutoff threshold can be used to put the regulator in a low-power state with a current draw of 10 µA to 20 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output that indicates when the regulator cannot adequately maintain the output voltage. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Pololu item #: 3786
Brand: Pololu supply outlook
Status: Rationed (Active and Preferred) 
RoHS 3 compliant
Out of stock.
Quantity:

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 50 V and efficiently reduces it to 12 V. The board measures only 0.7″ × 0.8″ yet delivers typical maximum continuous output currents between 2 A and 3.3 A, depending on the input voltage, which makes it well suited for powering moderate loads like sensors or small motors. An optional enable input with a precise cutoff threshold can be used to put the regulator in a low-power state with a current draw of 10 µA to 20 µA per volt on VIN. The regulator also features reverse voltage protection and a power-good output that indicates when the regulator cannot adequately maintain the output voltage. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Related Products

Rocker Switch: 3-Pin, SPDT, 10A
Toggle Switch: 3-Pin, SPDT, 5A
Mini Pushbutton Power Switch with Reverse Voltage Protection, SV
Mini Pushbutton Power Switch with Reverse Voltage Protection, LV
TPS2113A Power Multiplexer Carrier with USB Micro-B Connector
0.100" (2.54 mm) Breakaway Male Header: 1×40-Pin, Straight, Black
0.100" (2.54 mm) Breakaway Male Header: 1×40-Pin, Right Angle
0.1" (2.54mm) Crimp Connector Housing: 1x4-Pin 10-Pack
0.100" (2.54 mm) Female Header: 1x4-Pin, Straight
170-Point Breadboard (White)

Related Categories

Step-Down Voltage Regulators
D36V50Fx Step-Down Voltage Regulators
Step-Up Voltage Regulators
Regulators and Power Supplies
Battery Holders
Batteries
Premium Jumper Wires
Wires with Pre-Crimped Terminals
Solderless Breadboards
Electronics Prototyping
0.1″ (2.54 mm) Female Headers
0.1″ (2.54 mm) Male Headers
Log In
Pololu Robotics & Electronics
Shopping cart
(702) 262-6648
Same-day shipping, worldwide
Menu
Shop Blog Forum Support
My account Comments or questions? About Pololu Contact Ordering information Distributors