Datasheet Intersil ISL78302 — 数据表

DATASHEET
ISL78302 FN7696
Rev 6.00
November 6, 2014 Dual LDO with Low Noise, High Performance and Low IQ
ISL78302 is a high performance dual LDO capable of sourcing
300mA current from each output. It has a low standby current
and is stable with an output capacitance of 1ВµF to 10ВµF and
an 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 highPSRR applications. В±1.8% Accuracy over all operating conditions 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 0.5ВµA. Low output noise: typically 37ВµVRMS at 100ВµA (1.5V) The part operates down to 2.3V and up to 6.5V input. The
typical output voltage can be as low as 1.2V and as high as
3.3V for each regulator. Please refer to the “Ordering
Information” on page 3 for standard options. Soft-start and staged turn-on to limit input current surge
during enable The ISL78302 is AEC-Q100 qualified at the automotive
temperature range of -40В°C to +105В°C. AEC-Q100 qualified 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 Extremely low quiescent current: 47ВµA (both LDOs active) Wide input voltage capability: 2.3V to 6.5V Low dropout voltage: typically 300mV at 300mA Stable with 1ВµF to 10ВµF ceramic capacitors Separate enable and POR pins for each LDO Current limit and over-temperature protection Tiny 10 Lead 3mm x 3mm DFN package Pb-free (RoHS Compliant) Applications Radio receivers Camera modules GPS/navigation Infotainment systems ISL78302
VIN (2.3 TO 6.5V) 1 …