HX4004 converter equivalent, regulated charge pump dc/dc converter.
* Fixed 5V Output
* VIN Range: 2.8V ～ 5.0V
* Output Current: up to 100mA（VIN≥2.8V）
up to 250mA（VIN≥3.6V）
* Constant Frequency Operation at All Loads
*.
* White LED Backlighting
* Li-Ion Battery Backup Supplies
* Local 3V to 5V Conversion
* Smart Card Reade.
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