REj3eyT

Ultra-small 3.7V lithium battery charging Type-C 5V2A

 
Overview
The project includes two modules with inputs of 5V1A and 5V2A respectively. Both have roughly the same width, with the 5V2A module being slightly longer.
Note: The 1uH inductor for the 5V2A module must be a high-current inductor, with a saturation current of at least 3.8A.
The advantages of this open-source module are: low cost, small size, and high power.
Figure 3-4 shows a commercially available module of the same power for size comparison.
Double-sided boards can actually be even smaller, but for ease of soldering, components are typically mounted on one side.
PDF_Ultra-small Mini Lithium Battery High Current Charging Module 5V3A.zip
Altium Ultra-Mini Lithium Battery High-Current Charging Module 5V 3A.zip
PADS Ultra-Mini Lithium Battery High-Current Charging Module 5V 3A.zip
BOM_Ultra-small mini lithium battery high-current charging module 5V3A.xlsx
94685
MT3608 Solution Verification (12V Output)
MT3608 Solution Verification (12V Output)
VOUT--12V
IOUT(max)--0.8A
VIN(min)--2V
MT3608 Solution Verification (12V Output) VOUT -- 12V VOUT (max) -- 0.8V Iout (min) -- 2V
Efficiency > 90% (0.5A) Ripple
 
Graph Efficiency vs. Output Current
 
Graph Load Dynamic Response Test Conditions: Vin = 5V; Vout = 12V; Iout = 0.2A -> 0.8A -> 0.2A; dI = 3A/us; CH1 = VOUT; CH2 = IOUT
 
MT3608 verification board test data.xlsx
PDF_MT3608 Solution Verification (12V Output).zip
Altium_MT3608 Solution Verification (12V Output).zip
PADS_MT3608 Solution Verification (12V Output).zip
BOM_MT3608 Solution Verification (12V Output).xlsx
94686
The small mobile phone project based on Lishuang Taishan School
3.1-inch screen expansion board based on LCSC Taishanpai development board
Project Introduction
Project Tutorial Documents: VII. Mobile Phone Comprehensive Project - Feishu Cloud Documents (feishu.cn)
Based on the LCSC Taishanpai development board, this 3.1-inch screen expansion board can be directly connected to the Taishanpai development board. It also integrates a speaker interface and microphone, connecting to the Taishanpai via POGO spring pins. The Taishanpai MIPI interface connects to the Taishanpai DSI interface via a 31p 0.3mm co-directional FPC cable. The touch interface connects to the Taishanpai TP interface via a 6P FPC cable.
Partial BOM link:
4mm POGO pin.
YTC1P-3010-01_(YIYUAN(怡远))YTC1P-3010-01 Chinese Datasheet_Price_PDF Manual - LCSC Electronics Mall (szlcsc.com)
Surface Mount Round Nut Pillar M2X2
Xionghe Yuanjing, Surface Mount Round Nut Pillar, M2X2, Copper Tin Plated, 1 piece [Price, Procurement, Image] - LCSC MRO Industrial Products (szlcsc.com)
3.1-inch capacitive touchscreen,
3.1-inch LCD screen, MIPI interface, 480*800 resolution, CTP large display LCD with capacitive touchscreen - Taobao (taobao.com)
screen cable
FFC FPC flexible cable LVDS MIPI LCD screen cable 13P 25P 31P 33P 39P 45P 51P
This is a schematic design for a SY7021 backlight driver circuit from Taobao.com (0.3mm)
. R7 and R8 are pull-up and pull-down resistors, respectively. When R7 is soldered, the BL pin is pulled up to keep the backlight on before the backlight driver loads; conversely, when R7 is soldered, the BL pin is pulled up to keep the backlight off before the backlight driver loads. R5 and R6 are sampling resistors. One of them is not soldered
with a GP7101 backlight adjustment circuit; it is connected to the I2C1 interface of the Taishanpai circuit board. The backlight is adjusted via the I2C interface to control the output PWM . The backlight selection circuit
uses different 0-ohm resistors to select between the backlight from the Taishanpai MIPI interface and the onboard backlight driver circuit. The physical PCB soldering is complete, and the Taishanpai connection diagram is shown.



 
VID_20240518_182544.mp4
PDF_A small mobile phone project based on LCSC Taishan School.zip
Altium - A small mobile phone project based on LCSC Taishanpai.zip
PADS - A small mobile phone project based on LCSC Taishanpai.zip
BOM_Based on LCSC Taishanpai Small Mobile Phone Project.xlsx
94687
electronic
参考设计图片
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