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Home Electronic Modules and Displays Electronic Modules Buck Boost Voltage Regulators Buck Converter
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Sale 38%
DD38LOSA
  • DD38LOSA

3.3V DD38LOSA DC-DC Converter, Voltage Stabilization Device,Input DC6-40V 5W, Power Supply Module

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QUICK OVERVIEW:

DC-DC Converter: High Efficiency, High Ripple

LDO Regulator: Low Efficiency, Low Ripple

DD38LOSA 2 In 1 Converter: High Efficiency, Low Ripple

Without Pin

3.3V: Input Voltage 6-40V, Output 3.3V

DC-DC Converter 6V to 4.6V, LDO Regulator to 4.6V to 3.3V.

5V: Input Voltage 8-40V, Output 5V

DC-DC Converter 8-40V to 6.4V, LDO Regulator 6.4V to 5V.

Maximum Output Current 700mA, Short-Term Maximum Output Current 1000mA

Working Frequency:550KHz

Efficiency: DC-DC Converter 85-90%, LDO 71-78%, Overall Efficiency 60-70%

Quiescent Current: About 1.5mA

5 in stock

SKU: AI2982
Category: Buck Converter

₹310.34 ₹193.52 (₹164.00 + GST)

Purchase this product now and earn 4 Zbotic Points!
Frequently Bought Together
DD38LOSA
This item: 3.3V DD38LOSA DC-DC Converter, Voltage Stabilization Device,Input DC6-40V 5W, Power Supply Module
₹310.34 ₹193.52 (₹164.00 + GST)
₹310.34 ₹193.52 (₹164.00 + GST)
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Description
Additional information
Warranty
COO

PRODUCT DESCRIPTION

The 3.3V DD38LOSA DC-DC Converter is a voltage stabilization module designed to provide a stable 3.3V output from an input range of DC 6-40V, with a maximum power output of 5W.

This module features a DC-DC converter that accepts a wide input voltage range, paired with an LDO (Low Dropout) linear regulator to ensure a highly regulated and stable output. It’s ideal for applications requiring consistent voltage performance across varying input conditions.

 

Operation:

The DC-DC input section can take a range of 5.2 to 40V on its input.

It uses the ME3116 switching regulator IC that operates at 550kHz and is configured to provide a fixed output voltage set to 4.7V.  Efficiency of this section is 85-90%.

The 4.7V is then feed to an LDO 1117A-3.3 linear regulator.  This regulator trims the 4.7V down to the final 3.3V output while also helping to filter the ripple and noise on the output of the DC-DC section.  Efficiency of this section is 71-78% giving an overall efficiency of 60-70% for the module.

DD38LOSA 3.3V Block Diagram

The final output has a ripple of 12-20mV under most conditions.  It doesn’t remove it completely due to the tight circuit coupling between the DC-DC converter and linear sections on the small board.  It is still 2-10x better than what most DC-DC converters can provide when used alone.  Measurements were done with a 100uF bulk capacitor on the output.

Because the linear regulator is always dropping a minimal voltage amount, it can operate at its full 700mA current rating independent of the input voltage.

Connections:

There is a 3-pin right angle header for making connections.

1 x 3 Header

  • I = Vin – Connects to 5.2 – 40V
  • G = Ground
  • O = 3.3V output

These are handy modules that can help resolve some common problems related to trying to generate a fairly clean 3.3V from a relatively high input voltage without having to derate the output current based on the input voltage like when using a linear regulator alone.

We tested these over over the full range of 5.2 to 40V at 700mA load without any issues.  At full load the module does run quite warm as expected.

The modules can handle up to 1A for short periods of time and we have tested to 800mA for extended periods at 25C ambient.

One quirk we have seen in our testing is that if the load is more than 600mA without any bulk capacitance on its output, the output can go into a current limit or other shutdown mode when power is first applied.  We have only seen this when testing using electronic dummy loads.  Add even a 10uF capacitor on the output resolves this, so it is not expected to be an issue under normal circuit conditions.

One thing to be aware of whenever using any breadboard friendly power module is that while the module may be able to handle 700+mA, the typical breadboard jumper wires will have a fairly significant voltage loss passing that much current. When using with higher current loads you may need to double-up on the wires or use heavier gauge wires on the output voltage connections to minimize the voltage drop.

 

note:

Inspected

3.3V output verified

Packaged in a resealable ESD bag for protection and easy storage.

Under high current loads the module can get hot, so use care when handling.

 

Specification:

Without Pin
3.3V: Input Voltage 6-40V, Output 3.3V
DC-DC Converter 6V to 4.6V, LDO Regulator to 4.6V to 3.3V.
5V: Input Voltage 8-40V, Output 5V
DC-DC Converter 8-40V to 6.4V, LDO Regulator 6.4V to 5V.
Maximum Output Current 700mA, Short-Term Maximum Output Current 1000mA
Working Frequency:550KHz
Efficiency:DC-DC Converter 85-90%, LDO 71-78%, Overall Efficiency 60-70%
Quiescent Current: About 1.5mA

 

Maximum Ratings
VIN Input Voltage Range 5.2 to 40V
IO Maximum Output Current 700mA
IPEAK Peak Surge Current 1000mA
Operating Ratings
VO Output Voltage 3.3V
IO Max Output Current (Continuous) 700mA
Iq Quiescent current 5mA typical
Dimensions L x W x H (not including header) 25 x 16 x 5.8mm

 

Package Include:

1 x 3.3V DD38LOSA DC-DC Converter, Voltage Stabilization Device, Input DC6-40V 5W, Power Supply Module

 

Weight 0.00455 kg
15 Days Warranty

Please note that this item is only covered by a standard supplier warranty against manufacturing defects for a period of 15days from the time of delivery. It is important to understand that only manufacturing defects are covered under this warranty, and any other issues will not be considered for reimbursement or replacement. We strongly advise inspecting the product upon delivery to ensure it meets your expectations. In case of any manufacturing defects, we guarantee reimbursement or replacement.


What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Country Of Origin: China

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