Tiny Whoov FPV Micro Hovercrafts

MICRO Multi Rotors

3D Printed Products

RotorX Atom RX122 V1/V2/V3

Custom Built Multi Rotors

Multi Rotor Kits (RTF/ARF)

Multi Rotor Flight Controllers

Multi Rotor Frames

Multi Rotor Landing Gear

Camera Mounts, Gimbals & Servos

FPV/OSD/Video Downlink

Multi Rotor Motors

Multi Rotor ESC / BEC

Multi Rotor Props

GPS / WayPoints etc...

Batteries / Accessories

Multi Rotor Spare Parts

Battery Chargers / Power Supplies

DJI Phantom / INSPIRE 1 Accessories

Power Distribution Boards/Harness/Voltage Regs

Build Fees / Labor Charges

Hardware, Accessories & Misc.

Helicopter Accessories & Upgrades

Flight Simulator / Trainer

Multi Rotor Orientation LED's

Top Plate Kits

Hardware/Standoffs/Aluminum/Nylon screws

Multi Rotor Cases

Phoenix Flight Gear Parts and Accessories

Transmitters/Receivers/Modules/Telemetry & Accessories

ARF Mini Quad BUILT FREE Combo Kits

Adhesives

Tools

You Tube/Facebook Links

Assembly Instructions

Carbon Fiber Specialties
AbuseMark
Acton
Aero Sim
Aeroxcraft
AlienWii
Altitude RC
APC
Avroto
Blade
BrotherHobby
Carbon Fiber Specialties
Carboncore
CarbonGear
Chaoli
Chargery Power
Crazepony
DALprop
DJI
Dragon Circuits
Dubro
DYS
Eachine
Estes
Extreme Fliers
FatShark
FeiYuTech
FlySight
Frsky
Furious FPV
FVT
FXT Technology
GAUI
Gemfan
Genix
Go Professional
Graupner
HDMI2AV
Hitech
HQ Props
Hubsan
Hyperion
ImmersionRC
iPower
ITELITE
KingKong
Lemon Rx
Lilliput
Makerfire
Maytech
MJX
MultiFlite
Multiprotocol
Multirotor UAV
NAZE
Orion RC
Oversky
PFG Phoenix Flight Gear
PhantoMount
PhotoHigher
Pololu
Pulse
Quanum/Scisky
Racerstar
Rakon
Rc Logger
RC-Drones
RotorX
RS90
RunCam
Ryze Robotics
Secraft
Spektrum
Sputnik
Sunrise Model
Superior Hobby
Tattu
Thunder Power
T-Motor
Trinity
Turnigy
Vortex
Vulcan UAV
Walkera
Wiha
X468
X-Cam
Zippy
ZMR250
ZOP
Home>Power Distribution Boards/Harness/Voltage Regs
Pololu 3.3V, 500mA Step-Down Voltage Regulator D24V5F3

Pololu 3.3V, 500mA Step-Down Voltage Regulator D24V5F3

Item Id: D24V5F3
Your Price:
$6.00
Availability:
In Stock Now Shipping
Free Shipping over$50
Quantity
Email a friend Email a friend
Description
Pololu 5V Step-Up Voltage Regulator U1V10F5



This is used for running 5v electronics off of a 1S LiPo

Perfect for running the new Spektrum VA2500 FPV Cam/VTX off a 1s Lipo



Overview

This 5 V boost (step-up) voltage regulator generates higher output voltages from input voltages as low as 0.5 V, and it also automatically switches to a linear down-regulation mode when the input voltage exceeds the output. This makes it great for powering 5 V electronics projects from 1 to 3 NiMH, NiCd, or alkaline cells or from a single lithium-ion cell.

When boosting, this module acts as a switching regulator (also called switched-mode power supplies (SMPS) or DC-to-DC converters) and has a typical efficiency between 70% to 90%. The available output current is a function of the input voltage, output voltage, and efficiency (see Typical Efficiency and Output Current section below), but the input current can typically be as high as 1.2 A.

The regulator’s thermal shutdown engages at around 140°C and helps prevent damage from overheating, but it does not have short-circuit or reverse-voltage protection.

Features

  • Input voltage: 0.5 V to 5.5 V
  • Fixed 5 V output with 4% accuracy
  • Automatic linear down-regulation when the input voltage is greater than the output voltage
  • 1.2 A switch allows for input currents up to 1.2 A
  • Good efficiency at light load: <1 mA typical no-load quiescent current, though it can exceed 1 mA for very low input voltages
  • Integrated over-temperature shutoff
  • Small size: 0.35? × 0.45?; × 0.1? (9 × 11.5 × 2.5 mm)

Using the Regulator

Connections

The boost regulator has three connections: input voltage (VIN), ground (GND), and output voltage (VOUT).

The input voltage, VIN, must be at least 0.5 V for the regulator to turn on. However, once the regulator is on, the input voltage can drop as low as 0.3 V and the 5 V output voltage will be maintained on VOUT. Unlike standard boost regulators, this regulator has an additional linear down-regulation mode that allows it to convert input voltages as high as 5.5 V down to 5 V for small to moderate sized loads. When the input voltage exceeds 5 V, the regulator automatically switches to this down-regulation mode. The input voltage should not exceed 5.5 V. Please be wary of destructive LC spikes that might cause the input voltage to surpass 5.5 V (see below for more information).

The three connections are labeled on the back side of the PCB, and they are arranged with a 0.1? spacing along the edge of the board for compatibility with solderless breadboards, connectors, and other prototyping arrangements that use a 0.1? grid. You can solder wires directly to the board or solder in either the 3×1 straight male header strip or the 3×1 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 70 to 90%.

The maximum achievable output current is approximately proportional to the ratio of the input voltage to the output voltage. If the input current exceeds the switch current limit (typically somewhere between 1.2 and 1.5 A), the output voltage will begin to drop. Additionally, the maximum output current can depend on other factors, including the ambient temperature, air flow, and heat sinking.

LC Voltage Spikes

When connecting voltage to electronic circuits, the initial rush of current can cause damaging voltage spikes that are much higher than the input voltage. In our tests with typical power leads (~30? test clips), input voltages above 4.5 V caused voltage spikes that could potentially damage the regulator. You can suppress such spikes by soldering a 33 µF or larger electrolytic capacitor close to the regulator between VIN and GND.

Dimensions

Size: 0.35? × 0.45? × 0.1?
Weight: 0.4 g

General specifications

Minimum operating voltage: 0.5 V
Maximum operating voltage: 5.5 V
Maximum input current: 1.2 A2
Output voltage: 5 V
Reverse voltage protection?: N
Maximum quiescent current: 1 mA3

Identifying markings

PCB dev codes: reg12b
Other PCB markings: 0J7517

Notes:

Without included optional headers.
Regulator may overheat at lower input currents when VIN is much lower than VOUT. Available output current is a function of VIN, VOUT, and the regulator efficiency.
The highest quiescent currents occur at very low input voltages; for most of the input voltage range, the quiescent current is well below 1 mA.