Charge pump regulator for battery-powered 5V rails
The LTC1514CS8-5#PBF is a charge pump regulator that steps up or steps down an input voltage from 2.7 V to 10 V to deliver a fixed 5 V output at up to 50 mA. Its 650 kHz switching frequency allows the use of small ceramic capacitors, keeping the total footprint compact for space-constrained designs.
What the 50 mA output means for your load budget
At 50 mA continuous output, this part is sized for low-power loads such as sensor bias supplies, op-amp rails, or microcontroller I/O voltage references. The charge pump topology avoids the inductor required by a buck-boost converter, simplifying the BOM and reducing radiated EMI — but the 50 mA ceiling means it cannot drive relays, solenoids, or communication transceivers that draw peak current above that level. For industrial or automotive temperature grades, a different regulator from the LTC family would be needed.
Package and board integration
The non-synchronous rectifier topology means the external Schottky diode is not required — the internal switches handle both the charging and discharging phases.