XC9210 series

The XC9210 is a synchronous PWM and PWM/PFM controller designed for low voltage step-down DC/DC converter applications. High efficiency is maximized with the XC9210's synchronous topology which uses a low RDS(on) N-Ch MOSFET instead of the Schottky diode used in traditional buck circuits.

The operation of the XC9210 series can be switched between PWM and PWM/PFM externally using the MODE pin. In PWM/PFM mode the XC9210 automatically switches from PWM to PFM during light loads and high efficiencies can be achieved over a wide range of load conditions. Output noise is reduced in PWM operation as the frequency is fixed.

The XC9210 has an 0.9V (±2.0%) internal voltage, and using externally connected components, the output voltage can be set freely between 0.9V to 6.0V. With an internal switching frequency of 300kHz smaller, low cost external components can also be used. Soft-start time is internally set to 10msec offering protection against in-rush currents during start-up and preventing voltage overshoot.

Features:

• Input Voltage Range: 2.0V ~ 10.0V
• Output Voltage Range: 0.9V ~ 6.0V
• Oscillation Frequency: 300kHz (180kHz as custom)
• Max Output Current: >2.0A
• Stand-by Current: 3.0µA (max)
• Soft-start: 10ms (internally set-up)

Package: MSOP-8A