Description:
The SR62840 is a high efficiency step-down converter with ultra-low operating quiescent current of typically 60nA. The device contains special circuitry to achieve just 120nA IQ in 100% mode to further extend battery life near the end of discharge.
The device uses DCS-Control? to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode the device extends the light load efficiency down to a load current range of 1μA and below. 16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components. The device’s STOP pin immediately eliminates any switching noise in order to take a noise-free measurement in data acquisition systems.
The SR62840 provides an output current of up to 750mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such a single coin cell, 2S to 4S Alkaline, 1S/2S Li-MnO2 or 1S Li Ion.
Features:
_60nA quiescent current
_100% duty-cycle mode with 150nA IQ
_Input voltage range VIN from 1.8 V to 6.5 V
_Output current up to 750mA
_RF friendly DCS-Control?
_80% efficiency at 1 μA IOUT (3.6 VIN to 1.8 VOUT)
_16 selectable output voltages via VSET pin
_Auto transition PFM/PWM or forced-PWM mode
_Selectable forced PWM and STOP modes
_Output discharge function
_25nA shutdown current
_WCSP-6P Packages
Applications:
_Smart meters, smart thermostats
_Tracking devices
_Wearable electronics
_Medical sensor patches and patient monitors
_Industrial IoT (smart sensors)
_Test and measurement
