LT8495
Features
SEPIC/Boost Converter with 2A, 70V Switch, 9µA Quiescent Current, POR and Watchdog Timer
Description
...
LT8495
Features
SEPIC/Boost Converter with 2A, 70V Switch, 9µA Quiescent Current, POR and Watchdog Timer
Description
n Wide Input
Voltage Range of ~1V to 60V (2.5V to 32V for Start-Up)
n Low Ripple Burst Mode® Operation n 9µA IQ at 12VIN to 5.0VOUT n Output Ripple (<10mV Typ.) n Dual Supply Pins: n Improves Efficiency n Reduces Minimum Supply
Voltage to ~1V after Start-Up to Extend Battery Life n Integrated 2A/70V Power Switch n Programmable Watchdog Timer Can Operate When
VIN Supply Is Removed n Programmable Power-On Reset Timer (POR) with
RST Functional for Input Supply Down to 1.3V n FMEA Fault Tolerant in TSSOP Package n Fixed Frequency PWM, SEPIC/BOOST/FLYBACK
Topologies n Programmable Switching Frequency:
250kHz to 1.5MHz n UVLO Programmable on SWEN and RSTIN Pins n Soft-Start Programmable with One Capacitor n 20-Lead TSSOP Package
Applications
n Automotive ECU Power n Power for Portable Products n Industrial Supplies
TheLT®8495isanadjustablefrequency (250kHzto 1.5MHz) monolithic switching regulator with a power-on reset and watchdog timer. Quiescent current can be less than 9µA when operating and is ~0.3µA when SWEN, WDE and RSTIN are low. Configurable as a SEPIC, boost or flyback converter, the low ripple Burst Mode operation maintains high efficiency at low output current while keeping output ripple below 10mV. Dual supply pins (VIN and BIAS) allow the part to automatically operate from the most efficient supply. Input supply
voltage c...