AP8215 Input Output 0.9-5.0V 1.8-9V / ADJ_ constant voltage boost driver chip

AP8215 series DC / DC chip is a CMOS process PFM low quiescent current switching DC / DC boost converter. The chips use advanced circuit design and manufacturing process, greatly improve the inherent noise problems switching circuit, reduce interference with the surrounding circuitry. Output voltage of 2.0V ~ 7.0V (0.1V by the level difference), the oscillation frequency of 180 KHz (typical value). Switching transistor built AP8215Xxx, composition DC / DC boost circuit requires only three external components, a Schottky diode, an inductor and a capacitor. AP8215Cxx a CE, a shutdown function, allows chip power consumption to a minimum. The chips for low-noise, high current, battery-powered devices.
Features:
only a small number of external components: Only a Schottky diode, an inductor and a capacitor
low ripple noise and a low
operating voltage range: 0.9V ~ 6.5V
with load capacity: When Vin = 3.0V and Vout when Iout = 400mA = 5.0V
output voltage range: 2.0V ~ 7.0V (0.1V steps)
output voltage with high accuracy: ± 2.5%
low starting voltage: 0.9V maximum value (when the output current is 1mA)
maximum operating frequency: 180 KHz (typical)
high efficiency: 85% typ
package size: SOT-23, SOT-89
application:
the power battery powered devices portions
wireless mouse, wireless keyboard, a camera, a video camera, VCR, PDA, portable telephone, an electric power supply portion toys and other portable devices
require a battery can provide power supply voltage than the high voltage portion of the device