Custom AC-DC 5V 700mA 12V 450mA 12V 300mA 3.5W Precision Buck Converter AC 220V to 5V DC step down Transformer power supply module Manufacturer

5V 700MA/12V 450MA:

Step Down Module
Condition: New
With temperature protection, over current protection and short circuit protection, high and low voltage isolation, AC85 ~ 265 v wide voltage input, ac/dc current , 431 precision voltage stability DC5V output
Input voltage: AC 85 ~ 265 v 50/60 hz or DC 100~ 370 v
Imput current: 0.0273A(AC110V) 0.014A(AC220V)
Input Inrush Current: 20A
Output voltage: DC 5V (+ / - 0.2 V)
Output current 700 mA
Power 3.5 W
Operating temperature -20~60°
Relative humidity 40-90%RH
Output 5V, min current 0a, max current 700mA, peak current: 800mA, output range: 4.8~5.2v, ripple wave: 60mV
Output power:0-4W(DC current)
Output efficiency: 80%
Switch machine overshoot: MAX 10%
Output voltage rise time: MAX 100MS
Output over voltage: 4.8-5.2V, recovery:Lock, restart after recovery
Output over power protection:YES ,recovery:Lock, restart after recovery
Short-circuit protection: YES, automatic recovery after problem solved
Temperature protection: YES,recovery:Lock, restart after recovery
Overcurrent protection: YES,recovery:Lock, restart after recovery
Size: 29.89 x 20.57 x18mm

12V 450mA:

-The power supply for whole isolation type industrial-grade built-in power supply module, temperature protection, over current protection and short circuit protection,AC 85 ~ 265v wide voltage input, 431 precision voltage, DC12V output, small size, stable performance, cost-effective
-input voltage of AC85 ~ 265v 50/60 HZ
-Output voltage DC12V (±0.1V)
-Output current 450MA
-Power 5W

Horizontal capacitor

5V 700MA:
1. Output indicator: green
2. Full load power: <4W
3. No-load power: <0.05W
4. Working temperature: -20~70
5. Test resistance: 7 ohms (4.9V) for 5V
6. Output power: 3.5W, efficiency is about 80%
7. Input voltage range: AC50V-277V DC70V-390V
8. Output current: 5VmA-700mA, enters constant current mode when fully loaded
9. Output protection: overvoltage, overcurrent, overtemperature, short circuit protection, etc.
10. Output characteristics: Multiple voltage modules can be used in parallel to meet the needs of small current and large current
11. Output voltage: 5V+-0.15v no load and full load, light load minus 0.1V, rebound when heavy load, 50% load ripple 60mV
12. Capacitance temperature is 105° 10,000 hours, more than 5 years at 70°, and about 20-50 years at room temperature (not recommended for use above 70°).

12V300MA:
1. Output indicator: green
2. No-load power: <0.05W
3. Full load power: <4W
4. Working temperature: -20~70
5. Test resistance: 40 ohms (12V) for 12V
6. Output power: 3.5W, efficiency is about 80%
7. Input voltage range: AC50V-277V DC70V-390V
8. Output current: 12VmA-300mA, enters constant current mode when fully loaded
9. Output protection: overvoltage, overcurrent, overtemperature, short circuit protection, etc.
10. Output characteristics: Multiple voltage modules can be used in parallel to meet the needs of small current and large current
11. Output voltage: 12V-0.05v+0.3v no load and full load, light load minus 0.1V, rebound when heavy load, 50% load ripple 100mV
12. Capacitance temperature is 105° 10,000 hours, more than 5 years at 70°, and about 20-50 years at room temperature (not recommended for use above 70°).

Vertical capacitor:

This power module is suitable for: industrial instrumentation, smart home switch socket host, etc., general electronic products, toy products, adapter products ...

AC input (VAC): AC60-277V (recommended AC85-265V)
DC input (VDC): DC80-390V (recommended DC100-370V)
Frequency range (Hz): 47-63
Input current (A): 0.04 / 115VAC 0.02 / 230VAC
Inrush current (A): Cold start: 4A / 230VAC
Efficiency (TYP): ordinary models ≥73% -80%


Output voltage (VDC): 5.1V ± 5% / 12.1V ± 5%
Output voltage accuracy: 4.85-5.35V / 11.5-12.7V
Rated current (MA): 700MA / 300MA
Rated power (W): 3W
Ripple and Noise (MVP-P): rated input voltage 20MHz bandwidth / 2% of output voltage
Linear adjustment rate: ± 1% of full load
Load adjustment rate: 10-100% load ± 3%
Start / rise time: full load = 836ms, (7.4ms / 90VAC) 500ms, (7.4ms / 230VAC)
Holding time (MS): full load = (16ms / 115VAC) (50ms / 230VAC)
Overload protection: rated input voltage = 115% -150% / protection mode: (snoring mode, load abnormal conditions can be automatically restored if abnormal conditions are removed)
Short-circuit protection: rated input voltage = long-term short-circuit, self-recovery. Full-load constant-current mode
Overcurrent protection: full load constant current mode
Start delay time (MS): 7.4ms
Power-down hold time (MS): 50ms






6V 600MA /14.5V 200MA:

Output voltage (VDC): 6V ± 5% / 14.5V ± 5%
Output voltage accuracy: 4.85-5.35V / 11.5-12.7V
AC input (VAC): AC70-270V
DC input (VDC): DC100-380V
Rated current (MA): 700MA / 300MA / 200MA / 600MA
Rated power (W): 3W
Ripple and Noise (MVP-P): rated input voltage 20MHz bandwidth / 2% of output voltage
Linear adjustment rate: ± 1% of full load
Load adjustment rate: 10-100% load ± 3%