LM2596 DC DC Step Down Converter Voltage Regulator LED Display Voltmeter 4.0~40 to 1.25-37V Buck Adapter Adjustable Power Supply
SPECIFICATIONS
Brand Name: OiKe
Choice: yes
High-concerned chemical: none
Is Batteries Included: No
Is Electric: No battery
Is it battery/power supply: N
Is it charger/adapter: N
Material: Composite Material
Origin: Mainland China
Quantity: 1 pcs
Recommend Age: 14+y
Use: Vehicles & Remote Control Toys

Input: DC 3 V to 40 V (input voltage must be 1.5 V higher than the output voltage, no boost)
Output: DC 1.25 V to 37 V voltage is continuously adjustable, maximum output current is 3 A
Steps: connect to power source, adjust the swirl button on the blue potentiometer and monitor voltage with multimeter to get the needed voltage (The factory have tested these at max voltage so they are very high by default, takes about 15-20 turns CCW before the voltage starts ramping down)
1. Most LM2596 modules on the market lack output short-circuit protection; if the output is shorted, the module is immediately damaged, and its current output capability is less than 1.8A. This module uses an authentic LM2596 chip—a large-size chip with a matte finish—and features absolute output short-circuit protection, delivering a true high current of 3A.
2. On-board voltmeter with self-calibration—you’ll never have to worry about inaccuracies!
Module Performance and Features:
● Features a voltmeter display with self-calibration capability. Equipped with an advanced voltage microprocessor, the voltmeter has an error margin of ±0.05V and a measurement range of 0–40V. (To ensure the voltmeter’s accuracy, please ensure the input voltage is 4.5V or higher.)
● A soft-touch button allows you to switch between measuring input or output voltage. An indicator light shows which voltage channel is currently being measured, and the setting is saved even if the power is turned off and then back on.
● The voltmeter can be turned off; simply press the left button when it is not needed.
● Equipped with terminal blocks for convenient use without a soldering iron, while also retaining soldering points for wire connections.
● Input voltage: 4.0–40 V. (The input voltage must be at least 1.5 V higher than the output voltage.)
● Adjustable output voltage range: 1.25 V–37 V, continuously adjustable. (The input voltage must be 1.5 V higher than the output voltage.)
● Output current: 3 A. Recommended for use at or below 2.0 A; enhanced heat dissipation is required for higher currents.
● Output power: 20W. Please enhance heat dissipation if exceeding 15W.
● High conversion efficiency, averaging 88% (efficiency depends on input and output voltages, current, and voltage difference).
● Features reverse polarity protection; will not burn out due to reverse connection.
● Includes overheat protection and short-circuit protection.
● Dimensions: 6.1 × 3.4 × 12 cm (L × W × H)
● Weight: 22 g
Applications:
This module can be used in step-down applications where the input voltage is higher than the output voltage, such as in battery systems, power transformers, DIY adjustable regulated power supplies, 24V in-vehicle notebook power supplies, industrial equipment step-down applications, and conversions from 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc.









- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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