I just got this from China and it seems to be working great with my GTUS! Just wondering if I am going to fry something if my rebuildables coils go too low on the ohms...tried 4.8 and it was a bit too high, trying 4.6 and seems great on the GTUS at 1.6 ohms, although I may go to 4.5 soon to try it there...
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Description:
Simple Switching Type Step-Up Voltage Regulator Module. Based on LM2577-ADJ IC
The LM2577 is monolithic integrated circuits that provide all of the power and control functions for step-up (boost), flyback, and forward converter switching regulators.
Requiring a minimum number of external components, this regulators is cost effective, and simple to use.
Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and thermal limiting,and undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that requires no external components, a soft start mode to reduce in-rush current during start-up, and current mode control for improved rejection of input voltage and output load transients.
Application:
Simple boost regulator
Flyback and forward regulators
Multiple-output regulator
Specifications:
Dimension: 43 (L) * 20 (W) * 13 (H) mm (with potentiometer)
Input voltage: DC 3.0 - 33.5V
Output Voltage: DC 4.5 - 35.0V (adjustable, O/P Voltage > I/P Voltage by 1.5V)
Output current: Rated current 2.5A, maximum 3A (Additional heat sink is required),
Output Power: Natural cooling 15W, Max 25W = = Input Voltage 3A efficiency%
Minimum Voltage difference: 2V
Conversion efficiency: Up to 92% (O/P voltage higher, the higher the efficiency)
Switching Frequency: 52KHz
Potentiometer adjustment direction: Clockwise (decrease), Anti-clockwise (increase)
Module Properties: Non-isolated step-up / Boost charge module
Standby Current: Typical 15mA (5V to 12V)
Input Reverse protection: None
Short circuit protection: None
Operating temperature: Industrial grade (-40 ℃ to +85 ℃) (ambient temperature exceeds 40℃, lower power use, or to enhance heat dissipation)
Full load temperature rise: 45 ℃
Load regulation: ± 0.5%
Voltage regulation: ± 0.5%
Dynamic response speed: 5% 200uS
Connection mode: Welded, plus pin can be directly soldered PCB.
Output ripple: 20M Bandwidth, 0.06mV (MAX)
Measurement table, only for reference:
------------------------------------------------------
Description:
Simple Switching Type Step-Up Voltage Regulator Module. Based on LM2577-ADJ IC
The LM2577 is monolithic integrated circuits that provide all of the power and control functions for step-up (boost), flyback, and forward converter switching regulators.
Requiring a minimum number of external components, this regulators is cost effective, and simple to use.
Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and thermal limiting,and undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that requires no external components, a soft start mode to reduce in-rush current during start-up, and current mode control for improved rejection of input voltage and output load transients.
Application:
Simple boost regulator
Flyback and forward regulators
Multiple-output regulator
Specifications:
Dimension: 43 (L) * 20 (W) * 13 (H) mm (with potentiometer)
Input voltage: DC 3.0 - 33.5V
Output Voltage: DC 4.5 - 35.0V (adjustable, O/P Voltage > I/P Voltage by 1.5V)
Output current: Rated current 2.5A, maximum 3A (Additional heat sink is required),
Output Power: Natural cooling 15W, Max 25W = = Input Voltage 3A efficiency%
Minimum Voltage difference: 2V
Conversion efficiency: Up to 92% (O/P voltage higher, the higher the efficiency)
Switching Frequency: 52KHz
Potentiometer adjustment direction: Clockwise (decrease), Anti-clockwise (increase)
Module Properties: Non-isolated step-up / Boost charge module
Standby Current: Typical 15mA (5V to 12V)
Input Reverse protection: None
Short circuit protection: None
Operating temperature: Industrial grade (-40 ℃ to +85 ℃) (ambient temperature exceeds 40℃, lower power use, or to enhance heat dissipation)
Full load temperature rise: 45 ℃
Load regulation: ± 0.5%
Voltage regulation: ± 0.5%
Dynamic response speed: 5% 200uS
Connection mode: Welded, plus pin can be directly soldered PCB.
Output ripple: 20M Bandwidth, 0.06mV (MAX)
Measurement table, only for reference:
| Input | Output | Efficiency | Input | Output | Efficiency |
| 3.7V | 5.0V | 81% | 12V | 16V | 90% |
| 5.0V | 12V | 84% | 12V | 19V | 91% |
| 7.4V | 12V | 90% | 12V | 19V | 92% |
| 7.4V | 12V | 88% | 12V | 24V | 89% |
| 12V | 16V | 92% | 12V | 24V | 88% |
