XC9215 Datasheet | Torex Semiconductor

DESCRIPTION The XC9215/9216/9217 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.6 Ω P-channel driver transistor and 0.7Ω N-channel switching transistor, designed to allow the use of ceramic capacitors. The ICs enable a high efficiency, stable power supply with an output current of 500 m A to be configured using only a coil and two capacitors connected externally. Minimum operating voltage is 2.0 V. Output voltage is internally programmable in a range from 0.9 V to 4.0 V in increments of 0.1 V (accuracy: ± 2.0%). With the built-in oscillator, oscillation frequency is selectable from 600 k Hz and 1.2MHz to make available the frequency best suited to your particular application. As for operation mode, the XC9215 series is PWM control, the XC9216 series is automatic PWM/PFM switching control and the XC9217 series can be manually switched between the PWM control mode and the automatic PWM/PFM switching control mode, allowing fast response, low ripple and high efficiency over the full range of load (from light load to high output current conditions). The soft start and current control functions are internally optimized. During standby, all circuits are shutdown to reduce current consumption to as low as 1.0µA or less. With the built-in U.V.L.O. (Under Voltage Lock Out) function, the internal P channel driver transistor is forced OFF when input voltage bees 1.4 V or lower. Two types of package, 250 m W (SOT25) and 100 m W (USP-6B), are available. ! FEATURES P-ch Driver Tr. Built-in : ON resistance 0.6Ω N-ch Synchronous Driver Tr. Built-in : ON resistance 0.7Ω Input Voltage Range : 2.0V ~ 6.0V Output Voltage Range : 0.9V ~ 4.0V (100m V step) High Efficiency : 92% (TYP.) (VIN=3.0V, VOUT=1.8V, IOUT=100m A )- Output Current : 500m A (VIN=3.0V, VOUT=1.8V)- Oscillation Frequency : 600k Hz, 1.2MHz (Fixed frequency accuracy +15%) Soft-start circuit built-in Current limiter circuit built-in ( constant current + latching) Low ESR...