XC9235/9236/9237 replaces NCP1522 The XC9235/9236/9237 series are DC/DC converters with synchronous rectification characteristics of a P-ch driver with a 0.42Ω on-resistance and an N-ch driver with a 0.52Ω on-resistance. They are compatible with ceramic capacitors. Only one coil is used externally, and two capacitors can achieve high efficiency and a stable output of 600mA. Operating voltages range from 2.0V to 6.0V. The output voltage is internally set to 50mV in the range of 0.8V to 4.0V (accuracy: ±2.0%). The built-in clock controller is available in 1.2MHz and 3.0MHz, and can be selected according to the specific application. The XC9235 series is fixed in PWM mode, and the XC9236 series works in PWM/PFM automatic switching mode. The XC9237 series can select fixed PWM mode or PWM/PFM automatic switching mode through external control signals. The chip features high-speed load response, low ripple, and high conversion efficiency across the entire load range (from light load to high load current). Built-in soft start and current limit protection circuit. Using the standby function, the chip stops working internally, reducing current consumption to 1.0μA or lower. With the built-in UVLO (undervoltage lockout) function, the internal P-ch driver is turned off when the input voltage is as low as 1.4V. Features: Input voltage range is 2.0V~6.0V (A/B/C series), 1.8V ~ 6.0V (D/E/F/G series) We make OBD connector with terminal by ourselves,
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XC9235B/F/G, XC9236B/F/G, XC9237B/F/G series internal setting 0.25ms (TYP). Soft start time, so it can be started quickly in a short time.
XC9235B/C/D/E/F/G, XC9236B/C/D/E/F/G, XC9237B/C/D/E/F/G integrates the load capacitor CL self-discharge function, which can pass LX and An automatic discharge switch between the VSS pins releases the charge on the load capacitor. When the device enters standby mode, the output voltage can be quickly returned to the VSS level by this function.
Output voltage range 0.8V~4.0V
Maximum output current 600mA
Oscillation frequency 1.2MHz, 3MHz
Control mode fixed PWM (XC9235), PWM/PFM automatic switching (XC9236), PWM/PFM external switching (XC9237)
Package SOT-25 (A/B/C series), USP-6C, USP-6EL (A/B/C series), WLP-5-03 (A/B series)
CL high speed self-discharge B/C/D/E/F/G series high speed soft start B/F/G series 