• Module name: 5A automatic constant voltage constant current step-up/step-down
• Module Properties: non-isolated synchronous rectifier step-up/step-down module automatically
• Input voltage :DC5-32V
• Input Current: 8A (MAX) Peak 10A (can use in Long working hours when input Current:⇐ 6A)
• Quiescent Current: 4mA (Operating Voltage Different,There will be errors)
• Output voltage: DC1.25-20V continuously adjustable
• Output Current: 5A (MAX) (it can be long time susing when natural cooling out put current ⇐3A) For higher output current, two modules can be used in parallel, such as the output to 6A, you can use two modules in parallel, the current of each module can be transferred to 3.5A.
• Output current range :0.2-5A
• Operating temperature: -40 to +85°C
• Operating Frequency: 150KHz
• Conversion efficiency: Up to 96% (efficiency and input and output voltage, current, voltage dropout related)
• Current protection: yes
• Short circuit protection: (enter the 10A fuse) double circuit protection, use more secure.
• Over-temperature protection: Yes (over-temperature automatically reduces the output voltage)
• Input Reverse Polarity Protection: None, (if required in the input string into diode)
• Output anti-anti-irrigation: Yes, for charging plus blocking diode is not required.
• Installation: four 3mm screws
• Connection: welding output, (V-IN as an input, V-OUT is the output)
• Module dimensions: length 60mm* width 40mm* height 30mm

• Material:plastic and metal
• Color:blue
• Product size:78*47*14mm (including the bottom surface of the radiating metal)
• Package weight:36g
• Model:LTC3780
• Input voltage: DC5-32V
• Output voltage: DC1V-30V continuously adjustable; the default 12V shipment
• Output current: 10A (MAX) ,long term within 8A
• Output power: 80W, max 130W, more than 80W please strengthen heat dissipation
• Output ripple: 50mV (12V turn to 12V, 5A measured)
• Short circuit protective:YES
• Input reverse connection protective: No
• Output prevent reverse connection protective: No
• Operating temperature range: -45 ~ +85°C

This module can be applied to relatively large fluctuations in the input voltage, the output requirements are relatively stable area. Such as:

• DIY a power supply, input 12V can, output can be 1.2-20V adjustable
• the power for your electronic devices, can according to your system set output voltage value
• as the Car power supply voltage for your laptop, PDA, or a variety of digital products supply
• DIY a laptop mobile power supply: 12V coupled with high-capacity lithium battery pack
• the solar panel regulator
• to the battery, lithium battery charging
• driving high-power LED lights.

• regulating potentiometer CV
  • According to your battery or LED the output voltage is set to your desired voltage value such as 4-string LED voltage regulator 14.8V, 16.8V and other four series lithium tune
• set CC potentiometer counterclockwise around 30 laps the output current is set to minimum, connect the LED, adjust CC to the desired current.
• For battery charging, the battery is discharged, and then connected to the output, adjust to your desired current CC (for sure when Charging the battery completely discharged before being allowed to adjust, because the battery charge remaining in the charge current is smaller.)

Adjustment method:

(take 10V undervoltage protection for 12V lead-acid battery, turn off output as an example) the input voltage stabilized power supply is adjusted to 10V. Adjust the under-voltage protection potentiometer (increase clockwise, decrease counterclockwise) until the fault indicator (red light) lights up, that is, set successfully; This battery discharge to 10 V, will automatically cut off the power supply, protect the battery from damage. Note: if not battery power can not be set;

input power supply (voltage is higher than under-voltage protection value), red light is not on, blue light is on, output multimeter, adjust output voltage potentiometer (increase clockwise. Decrease counterclockwise) until the required voltage; Note: the normal red light is not on, the blue light is on, on the contrary, there is a fault, the input under-voltage protection, the output over-current protection, the output short-circuit protection.

(take 12V input charge 12V lead-acid battery, charge current 5A as an example) input 12V power supply. Output and connect ammeter (red meter pen to output positive, black meter pen to negative, direct short connection output. Suggest using 15A ammeter to prevent burning insurance), adjust constant current potentiometer (clockwise increase). Decrease counterclockwise) until the ammeter shows the required value of 5A, remove the ammeter, connect the battery to charge normally. Note: for constant voltage equipment, only set the maximum output current.