AP8234 boost constant voltage driver chip

AP8234 is a series of CMOS boost switching regulator, the main by the reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, PWM / PFM switching control circuit. The external product low ON-resistance Nch power MOS, is suitable for applications requiring high efficiency and high output current. AP 8234 is switched to its operation range of the duty ratio of the PFM control circuit 15%, at light load and a PWM / PFM switching control circuit, and prevents the IC operating current reduces efficiency.
Wherein
the low voltage operation: to ensure that the starting voltage is 0.9 V (IOUT = 1 mA)
duty cycle: Built PWM / PFM switching control circuits 15 to 78%.
Oscillator frequency: 1.0MHz
outer member: a coil, a diode, a capacitor and a transistor
output voltage range: 1.5V ~ 6.5 V.
Output voltage accuracy: ± 2%
soft-start function: 2 mS.
Package: SOT23-5
Typical applications for
MP3 players, digital audio players,
digital cameras, GPS, wireless transceiver
portable devices