DATASHEET
ISL78302A FN7932
Rev 2.00
December 22, 2015 Dual LDO with Low Noise, Very High PSRR and Low IQ
ISL78302A is a high-performance dual LDO capable of
sourcing 300mA current from each output. It has a low
standby current and very high PSRR and is stable with output
capacitance of 1ВµF to 10ВµF with ESR of up to 200mО©. Features The device integrates an individual Power-On Reset (POR)
function for each output. The POR delay for VO2 can be
externally programmed by connecting a timing capacitor to the
CPOR pin. The POR delay for VO1 is internally fixed at
approximately 2ms. A reference bypass pin is also provided for
connecting a noise-filtering capacitor for low noise and
high-PSRR applications. В±1.8% Accuracy Over All Operating Conditions Integrates Two 300mA High-performance LDOs Excellent Transient Response to Large Current Steps Excellent Load Regulation: < 0.1% Voltage Change Across
Full Range of Load Current Low Output Noise: Typically 30ВµVRMS at 100ВµA (1.5V) Very High PSRR: 90dB at 1kHz Extremely Low Quiescent Current: 47ВµA (Both LDOs Active) The quiescent current is typically only 47ВµA with both LDOs
enabled and active. Separate Enable pins control each
individual LDO output. When both Enable pins are low, the
device is in shutdown, typically drawing less than 0.3ВµA. Wide Input Voltage Capability: 2.3V to 6.5V The ISL78302A is AEC-Q100 qualified. The ISL78302A is rated
for the automotive temperature range (-40В°C to +105В°C). Separate Enable and POR Pins for Each LDO Low Dropout Voltage: Typically 230mV at 300mA Stable with 1ВµF to 10ВµF Ceramic Capacitors Soft-start and Staged Turn-on to Limit Input Current Surge
During Enable Current Limit and Overheat Protection Tiny 10 Ld 3mmx3mm DFN Package -40В°C to +105В°C Operating Temperature Range Pb-free (RoHS Compliant) AEC-Q100 Qualified Applications Radio Receivers Camera Modules GPS/Navigation Infotainment Systems ISL78302A
VIN (2.3 TO 6.5V) 1
ON 2 ENABLE1
OFF ON …