Charge pump led driver, HU3031C 5 v non-inductive booster chip
LED lighting, DC - DC drive, boost, the input voltage: 2.7 V to 5 V, output voltage: 4.8 V to 5.2 V, output current 250 ma, the largest 1.2 MHZ, 0.2 uA Iq, encapsulation: SOT23-6,
HU3031C is a kind of low noise, a constant frequency (1.2 MHz) times the transformer switch capacitance, it produces a stable output voltage of 2.7 V to 5 V input, output up to 250 ma, less external parts number (a flying capacitor VIN and VOUT) and two small bypass capacitors HU3031C ideal, and application for small batteries,
New charge pump structure remains the same constant switch frequency to light, and reduce the output and input ripple, the HU3031C thermal shut off function can tolerate continuous short-circuit VOUT to GND, built-in soft start circuit during this period to prevent excessive surge current start, HU3031C adopts 6 pins SOT - 23 packaging bag,

2, the product features

Fixed output 5 v +/- 4%
VIN range: 2.7 V ~ 5 V
Output current: 250 ma (V=4.5 V) IN
Low noise constant frequency operation
Shut off the current: & lt; 1 mu A
Short circuit protection
Soft start
No inductor
Using thin 6 pins SOT - 23 packaging bags
Original factory supply
The input voltage of 2.7-4.5 V non-inductive booster
The input voltage of 2.5 5 v non-inductive booster
The input voltage of 2.7 V to 5 V non-inductive booster
The input voltage of 1.8 V to 3.3 V non-inductive booster
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