XC9519A12AZR-G 2ch boost/reverse DC/DC converter
The XC9519 series is a 2-channel (boost and inverting) DC/DC converter IC. One DC/DC converter is a step-up DC/DC and the other is a reversed-phase DC/DC converter. The step-up converter compares a built-in 1.0V to FBP voltage (with an accuracy of ±1.5%) and a positive output voltage reference voltage that can be freely set with the external components up to 18V. The difference between the reference voltage and the FBN voltage to GND (accuracy ± 1.5%) of the inverting DC/DC converter can be set up to -15V for the external component. With a frequency of 1.2MHz, the size of the external components can be reduced. As for the operating mode, the device can be selected using PWM control or PWM/PFM automatic switching control by the MODE pin. In PWM/PFM automatic switching control mode, control switch PWM to PFM at light load. The range is highly efficient from light load to large output current. In PWM control mode, the frequency of noise is fixed because it is easily reduced. Control modes can be selected for each application. Optimization of internal soft-start and current control functions. In standby mode, all IC circuits are shut down to reduce current consumption as low as 1.0μA or less. The device includes a load disconnect that is used to control the gate control pin of the P-channel MOSFET in standby mode. GAINP and GaInN pins are used for loop compensation to optimize load transient response. Built-in UVLO (Undervoltage Lockout) function, when the internal driver transistor is forced to shut down, the input voltage becomes 2.2V or lower.
peculiarity
Input Voltage
2.7V ~ 5.5V
Output Current
500mA @VIN=3.7V, VOUTP=5.0V, VOUTN=-5.0V
Positive Output Voltage
4.0V ~ 18.0V(accuracy±1.5% @25℃)
Negative Output Voltage
-15.0V ~ -4.0V(accuracy±1.5% @25℃)
Oscillation Frequency
1.2MHz
Soft-Start Circuit Built-In
Step-up DC/DC converter 2.5ms(TYP.),Inverting DC/DC converter 2.2ms(TYP.)
Protection Circuits
Over Current Limit (Integral Latching),Short Protection Latching,UVLO,Thermal Shutdown,Over Voltage Protection
Function Addition
Control Pin,Load disconnect Pin,Phase Compensation Pin,Ceramic Capacitor Compatible
Operating Ambient Temperature
-40〜+85℃
Package
QFN-24
Environmentally Friendly
EU RoHS Compliant, Pb Free
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