3.3V, 300mA Step-Down Voltage Regulator D24V3F3

Pololu 3.3V, 300mA Step-Down Voltage Regulator D24V3F3
Click to enlarge
Price: £3.00
(£2.50 + VAT)
Availability: 53
Model: 2097
Manufacturer: Pololu
Average Rating: 5 out of 5 Stars!

Pololu

3.3V, 300mA Step-Down Voltage Regulator D24V3F3

The compact (0.4"×0.5") D24V3F3 switching step-down (or buck) voltage regulator takes an input voltage between 7 and 42 V and efficiently reduces it to 3.3V while allowing for a maximum output current of 300 mA. The pins have a 0.1" spacing, making this board compatible with standard solderless breadboards and perfboards.

Overview

These buck (step-down) voltage regulators generate lower output voltages from input voltages as high as 42 V. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) and have a typical efficiency between 80% to 90%, which is much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large.

The regulator has short-circuit protection, and thermal shutdown prevents damage from overheating. The board does not have reverse-voltage protection.

Features

  • Input voltage: 7V to 42V
  • Fixed 3.3V output with 4% accuracy
  • maximum output current: 300 mA
  • 550 kHz switching frequency
  • 2 mA typical no-load quiescent current (20 μA typical quiescent current with SHDN = LOW)
  • integrated over-temperature and over-current shutoff
  • small size: 0.5" × 0.4" × 0.1" (13 × 10 × 3 mm)

Connections

The buck regulator has four connections: shutdown (SHDN), input voltage (VIN), ground (GND), and output voltage (VOUT).

The SHDN pin can be driven low (under 0.3 V) to turn off the output and put the board into a low-power state that typically draws 20 μA. The SHDN pin can be driven high (above 2.3 V) to enable the board, or it can be connected to VIN or left disconnected if you want to leave the board permanently enabled.

The input voltage, VIN, should be at least a few volts above VOUT, and you must ensure that noise on your input does not exceed the 42 V maximum. Additionally, please be wary of destructive LC spikes (see below for more information).

LC Voltage Spikes

When connecting voltage to electronic circuits, the initial rush of current can cause voltage spikes that are much higher than the input voltage. If these spikes exceed the regulator’s maximum voltage (42 V), the regulator can be destroyed. In our tests with typical power leads (~30" test clips), input voltages above 20 V caused spikes over 42 V. If you are connecting more than 20 V or your power leads or supply has high inductance, we recommend soldering a 33μF or larger electrolytic capacitor close to the regulator between VIN and GND. The capacitor should be rated for at least 50 V.

 

Pololu 5V Boost Regulator NCP1402
Pololu 5V Boost Regulator NCP1402
NCP1402
£4.96    
Adjustable Step-Up/Step-Down Voltage Regulator S7V8A
Adjustable Step-Up/Step-Down Voltage Regulator S7V8A
2118
£5.04    
3.3V Step-Up/Step-Down Voltage Regulator S7V8F3
3.3V Step-Up/Step-Down Voltage Regulator S7V8F3
S7V8F3
£4.80    
3.3V Step-Up Voltage Regulator U1V10F3
3.3V Step-Up Voltage Regulator U1V10F3
2563
£3.48    
5 out of 5 Stars!
5V Step-Up Voltage Regulator U1V10F5
5V Step-Up Voltage Regulator U1V10F5
2564
£3.48    
5V Step-Up Voltage Regulator U3V50F5
5V Step-Up Voltage Regulator U3V50F5
U3V50F5
£10.20    
Adjustable 4V-12V Step-Up Voltage Regulator U3V50ALV
Adjustable 4V-12V Step-Up Voltage Regulator U3V50ALV
U3V50ALV
£10.80    
Pololu 3.3V Boost Regulator NCP1402
Pololu 3.3V Boost Regulator NCP1402
NCP1402-3V3
£4.96    
Pololu 9V, 2.5A Step-Down Voltage Regulator D24V25F9
Pololu 9V, 2.5A Step-Down Voltage Regulator D24V25F9
D24V25F9
£8.64    
Pololu 12V, 1A Step-Down Voltage Regulator D24V10F12
Pololu 12V, 1A Step-Down Voltage Regulator D24V10F12
D24V10F12
£5.28    
5V, 500mA Step-Down Voltage Regulator D24V5F5
5V, 500mA Step-Down Voltage Regulator D24V5F5
D24V5F5
£4.08    
3.3V, 500mA Step-Down Voltage Regulator D24V5F3
3.3V, 500mA Step-Down Voltage Regulator D24V5F3
D24V5F3
£3.84    
5 out of 5 Stars!
5V, 300mA Step-Down Voltage Regulator D24V3F5
5V, 300mA Step-Down Voltage Regulator D24V3F5
2098
£3.00    
MC34063A Step Up/Down Inverting Switching Regulator
MC34063A Step Up/Down Inverting Switching Regulator
MC34063A
£0.72    
LD1117v33 3.3V 800mA Voltage Regulator
LD1117v33 3.3V 800mA Voltage Regulator
LD1117V33
£0.54    
LM317 Adjustable Voltage Regulator 1.5A TO220
LM317 Adjustable Voltage Regulator 1.5A TO220
LM317
£0.54    
78L05 5V 100mA Voltage Regulator
78L05 5V 100mA Voltage Regulator
DA78L05
£0.24    
7805 5V 1A Voltage Regulator
7805 5V 1A Voltage Regulator
MC7805
£0.40    
3.3V Low Dropout Voltage regulator 100mA LE33CZ
3.3V Low Dropout Voltage regulator 100mA LE33CZ
LE33CZ
£0.66    
Microchip MCP1700T 3.3V Voltage Regulator - LDO 250mA, SMD, SOT-23-3
Microchip MCP1700T 3.3V Voltage Regulator - LDO 250mA, SMD, SOT-23-3
MCP1700T-3V3
£0.42    
NCP1402-3.3V DC-DC Step-Up Converter Breakout
NCP1402-3.3V DC-DC Step-Up Converter Breakout
PRT-10967
£4.80    
NCP1402-5V DC-DC Step-Up Converter Breakout
NCP1402-5V DC-DC Step-Up Converter Breakout
PRT-10968
£4.80    
Pololu Step-Down Voltage Regulator D24V6AHV
Pololu Step-Down Voltage Regulator D24V6AHV
D24V6AHV
£7.08    
Write Review
Your Name:


Your Review: Note: HTML is not translated!

Rating: Bad            Good

Enter the code in the box below:

3.3V, 300mA Step-Down Voltage Regulator D24V3F3
Click to enlarge
3.3V, 300mA Step-Down Voltage Regulator D24V3F3
Click to enlarge
3.3V, 300mA Step-Down Voltage Regulator D24V3F3
Click to enlarge
3.3V, 300mA Step-Down Voltage Regulator D24V3F3
Click to enlarge
3.3V, 300mA Step-Down Voltage Regulator D24V3F3
$ 3.00 New In Stock
Shopping Cart
0 items
 
DELIVERY/PAYMENT

Free Delivery Orders over £50

UK - £2.40 orders under £50
Airmail from £2.95 (+VAT)
More Details...

 
Brands
 
 Check out our videos