Mini Boost Buck DC Board 1.8-5V to 3.3V, for Battery Juice R2
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Use full battery juice!
- Super mini size 11.5×9.5mm, SOT23-6 IC with only three caps
- Input Voltag 1.8-5V, output 3.3V up to 150mA
- Constant Frequency Operation at All Loads. Low Noise Constant Frequency (1.2MHz)
- Automatic Soft-Start Reduces Inrush Current
- Shutdown Current <1 uA, No load current is 1.77mA.
- Short-Circuit Protection
- No Inductors
- Standard 2.54 pin output, 3.3V-GND-VIN (face to top), can be used as a normal SMD part.
Testing for reference:
- 1.8V VIN -> 3.3V output
- 1.5V VIN -> 3.1xV output, still can drive a lot MCUs.
Updated to R2:
- Added EN enable pin of the chip
- EN default pull up to high level, connected by jumper VIN.
- Set EN to low level, can simply connect to battery ground to shut power down, for power saving.
- 2 AA Cell to 3.3V, tested can also get 3.2x V from a full 1.5V AA battery.
- USB On-The-Go Devices
- White LED Driver
- Handheld Devices
Each purchase is for one board only.