LTM4719EY#PBF

LTM4719EY#PBF is a 42V dual input, 150mA synchronous buck power µModule® regulator with an integrated battery health monitor interfaced through I2C. The ultralow quiescent current post-regulation linear regulator draws 560nA (typ) at no load and a 42µA (typ) at full load, which is ideal for battery operated portable equipment. The LTM4719 supports seamless transition between two separate input power sources if one of the inputs is lost. The automatic switchover eliminates the need for holdup capacitors and minimizes disturbances on the output rail. The 18.5µA burst mode operation quiescent current makes the LTM4719 compatible with many applications. The LTM4719 has a built-in precision coulomb counter accessible through an I2C interface. A discharge alarm threshold can be programmed. When the threshold is reached, an interrupt signal is generated at the active low IRQ pin. Battery voltage, battery impedance, and temperature are accessible through I2C.

• Wide voltage range for dual inputs: 2.4V to 42V, battery health monitor input voltage: 1.8V to 5.5V
• Adjustable output range from 1V to 4.2V
• Up to 150mA continuous output current
• Integrated low-dropout linear regulator: 195mV at 150mA load for low output noise
• 200kHz to 2.2MHz switching frequency
• Synchronization to an external clock
• Current mode control with 60ns minimum on-time
• Programmable input UVLO thresholds and discharge alarm with interrupt output
• Fault protection features include input UVLO, power good, current limit, and OVP
• Available in a compact 64-pin BGA, 7mm x 7mm x 1.85mm package