Datasheet

ManualsBrandsPololu Manuals5.0 V DC Regulators5V, 600mA Step-Down Voltage Regulator D24V6F5

RB-Pol-217

5V, 600mA Step-Down Voltage Regulator D24V6F5

Description

The compact (0.4″ × 0.5″) D24V6F5 switching step-down (or buck) voltage regulator takes an input

voltage between 7 V and 42 V and efficiently reduces it to 5 V while allowing for a maximum output

current of 600 mA. The pins have a 0.1″ spacing, making this board compatible with standard

solderless breadboards and perfboards.

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.

This regulator is available with a fixed 3.3 V, 5 V, 9 V, or 12 V output, and two versions are available

for each voltage, one with a 300 mA maximum output current (D24V3Fx) and one with a 600 mA

maximum output current (D24V6Fx).

Features

• Input voltage: [output voltage + dropout voltage] to 42 V (see below for more information on dropout

voltage)

• Fixed 3.3 V, 5 V, 9 V, or 12 V output (depending on regulator version) with 4% accuracy

• Maximum output current: 300 mA or 600 mA (depending on regulator version)

Summary of content (4 pages)

PAGE 1
RB-Pol-217 5V, 600mA Step-Down Voltage Regulator D24V6F5 Description The compact (0.4″ × 0.5″) D24V6F5 switching step-down (or buck) voltage regulator takes an input voltage between 7 V and 42 V and efficiently reduces it to 5 V while allowing for a maximum output current of 600 mA. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards. These buck (step-down) voltage regulators generate lower output voltages from input voltages as high as 42 V.
PAGE 2
• 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 mm × 10 mm × 3 mm) Using the Regulator 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.
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in either the 4×1 straight male header strip or the 4×1 right-angle male header strip that is included. Typical Efficiency and Output Current The efficiency of a voltage regulator, defined as (Power out)/(Power in), is an important measure of its performance, especially when battery life or heat are concerns. As shown in the graphs below, this switching regulator typically has an efficiency of 80% to 90%.
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exceed the regulator’s target output voltage in order to ensure the target output can be achieved. For example, if a 5 V regulator has a 1 V dropout voltage, the input must be at least 6 V to ensure the output is the full 5 V.