Description

Features:
★This module uses a very mature charging chip TP4056, with simple peripheral circuits, good protection performance and high charging accuracy.
★This module is fully machined and automated, and manufactured with full-chip parts. Each module will be tested before shipment, with high reliability.
★The current of this module can be adjusted. As long as the fixed resistance in the circuit board is changed, the output can be changed to 100mA-1000mA, which is very convenient.

Module application range:
★This module is used for single-cell lithium battery or multi-cell parallel lithium battery charging, the charging port can take power from USB

Instructions/Precautions:
★The ammeter for testing current can only be connected in series with the 5V input terminal of the charging board.
★The charging current is preferably 0.37C of the battery capacity, which is 0.37 times the capacity, such as a 1000mAH battery charging current of 400. If the charging speed is too large, the effect will be poor, and the battery voltage will drop more after charging!
★The charging connection wire cannot be too thin or too long. This connection resistance is large. If it is too thin, the battery voltage will drop after the charge.
★It is better to make good contact with the battery. Otherwise, the battery voltage will drop more after charging.
★If the input voltage of 5V is too high, such as 5.2 or even 5.5, the charging current will be less than 1000mA, which is normal. When the voltage is high, the chip heats up and the charging current is automatically reduced to prevent the chip from burning. It is normal for the chip to heat up around 60 degrees during operation. After all, the charging current is large.
★ Reverse connection of input has no effect on the chip, but reverse connection of output (battery end) will burn the chip, please pay attention to buyers.

Current regulation

DC-DC boost module (0.9V~5V) 5V 600MA USB boost circuit board

Statement: The output power of this module is not only affected by the load capacity of the module itself, but also by various factors such as the front-level power supply and the rear-level load; the following data are the results measured by professional equipment, and other factors are not considered.

The power module is a kind of electronic components, please purchase it carefully if you have no electronic professional knowledge.

1. This module uses high-performance chips, and its performance is better than ordinary modules.
2. Input any DC voltage from 0.9V to 5V, and it can output 5V DC voltage stably. It can output current up to 200~300MA when powered by a single AA battery, and output current of 500~600MA when powered by two AA batteries. Power your mobile phones, cameras, microcontrollers and digital products
3. Industrial temperature range: -40℃—+85℃
4. High conversion efficiency, up to 96%
5. With USB socket, wide range of uses
6. Ultra-small size (PCB board 25mm*18mm), used for installation in various small equipment
7. With working indicator

Use range:

1.DIY mobile power supply: When you always feel that your mobile phone, MP3, MP4, PDA, PSP is not enough power when you are traveling or traveling, and you have extra batteries, you can consider DIY a mobile power supply; just choose This module plus your [one lithium battery or 2-3 nickel metal hydride battery] can output 5V voltage to charge your mobile phone, MP3, MP4, PDA, PSP, very simple and convenient.

2. Does this power module have short circuit protection? Will it burn out if the input is short-circuited accidentally when I use it?
Answer: There is no short-circuit protection. If you need short-circuit protection, please connect a resettable fuse in series at the input.

Buyers need to know: Some manufacturers will add identification resistors to products such as MP3MP4 mobile phones for their own interests.

So after buying this module, if the buyer finds that it cannot be used, please find out whether the identification resistor is added.

DC-DC step-down module 6-24V12V24V to 5V3A car 97.5% USB mobile phone charger

New product introduction:

The maximum output current is 3A, long-term operation is 2.1A, and the margin is sufficient.

Adopting a new scheme design, the circuit design does not require electrolytic capacitors and tantalum capacitors (the life of electrolytic capacitors is short, and tantalum capacitors may explode). Three large-size solid ceramic capacitors (MCC) currently used in high-end circuits are used.

The ripple is very low. The 12V to 5V 3A is only about 10 millivolts. Many of the ripples in the industry have reached 500 millivolts or more, which will cause an invisible damage to the equipment, and seriously cause the equipment to work abnormally or damage. IPHONE is Very delicate.

The new solution uses synchronous rectification, and the circuit conversion efficiency is very high. The efficiency is as high as 97.5% when 6.5V to 5V 0.7A, and it is 94% when 12V to 5V 1A. Unlike some peers, the efficiency is only 60-70%. (The efficiency test removed the voltage drop of the input reverse connection protection diode and the fuse).

Use flat copper wire inductance to maximize conversion efficiency. Reduce heat generation.

The first TVS tube with output overvoltage protection function, 1.5A input fuse and 300W output 5V TVS tube for overvoltage clamp protection to protect USB devices.

The current USB step-down modules of the same industry have no overvoltage protection function, which poses a very big safety hazard to USB devices. If you think about the breakdown of the step-down module, 12V is directly added to your IPHONE, can your IPHONE be spared?

1. Using the latest USB identification circuit, it is perfectly compatible with IPHONE, most Android phones, and IPAD.
2. The short head gold-plated borderless USB has a long service life, which is by no means comparable to ordinary USB interfaces.
3. Output voltage indicator (red)
4. The input is equipped with a reverse connection protection diode, and the input positive and negative electrodes will not be damaged if they are reversed. (The test efficiency of our shop ignores the voltage drop of the input diode and the fuse)
5. Ultra-low quiescent current, quiescent current of 0.85 mA. It is connected to the car battery without a switch, and can be connected to the lighter line or the ACC power line.

parameter

Module nature: non-isolated step-down module (BUCK) synchronous rectification
Input voltage: DC 6-24V
Output voltage: 5.1-5.2V
Output current: maximum 3A (please pay attention to heat dissipation at full load), no special heat dissipation is required for the actual test input 12V output within 2A.
Conversion efficiency: up to 97.5% (6.5 to 5V 0.7A) (tested value after short connection of reverse connection protection and fuse)

Switching frequency: 500KHz
Output ripple: about 10mV (12V to 5V3A) 20M bandwidth
Output indication: the output voltage indicator is red
Working temperature: industrial grade (-40℃ to +85℃) (the higher the ambient temperature, the smaller the output power)
Output overvoltage protection: Yes, input 1.5A fuse, output 5V, 300W TVS tube clamp protection.
Full load temperature rise: 30℃
Quiescent current: 0.85 mA
Load regulation rate: ±1%
Voltage adjustment rate: ±0.5%
Dynamic response speed: 5% 200uS
Output short circuit protection: Yes, please do not short circuit for a long time
Input reverse connection protection: Yes, input has reverse connection protection diode
Connection method: welding
Input method: welding
Output mode: short USB