MAX20310 Maxim Integrated Wearable Power Management Solution for Primary Cells
Key Features:
Extend System Battery Use Time
Single Inductor, Multiple Output (SIMO) Ultra-Low IQ Buck-Boost Regulator
Battery Input Voltage from 0.7V to 2.0V
Output Voltage Programmable From 0.9V to 4.05V
250mW Maximum Total Input Power
Incremental CAP Quiescent Current 1μA per channel
84% Efficiency for 1.8V, 10mA Output
Input Current Limited
Dual Micro-IQ 50mA LDO
Inputs Supplied by Dual Buck-Boost Outputs
Output Programmable from 0.5V to 3.65V
Quiescent Current 1.1µA per LDO / 600nA per Load Switch
Configurable as Load Switch
Extend Product Shelf-Life
Battery Seal Mode
10nA Battery Current (typ)
Minimize Board Area
1.63mm x 1.63mm WLP
Easy-to-Implement System Control
Voltage Monitor Multiplexer
1% Accurate Battery Inverter (±10mV at 1.0V)
Power Button Monitor
Buffered Output
Power Sequencing
Reset Output
I2C Control Interface
Description
The MAX20310 is a compact power management integrated circuit (PMIC) for space-constrained, battery-powered applications where size and efficiency are critical. The device combines two single inductor, multiple output (SIMO) buck-boosted outputs with two LDOs and other system power management features like a push-button monitor and sequencing controller.
The device includes a SIMO buck-boost switching regulator that provides two programmable voltage rails using a single inductor, minimizing solution footprint. The MAX20310 operates with battery voltages down to 0.7V for use with Zinc Air, Silver Oxide, or Alkaline batteries. The architecture allows for output voltages above or below the battery voltage.
Additionally, the MAX20310 has two programmable low-dropout (LDO) linear regulators. The linear regulators can also operate as power switches that can disconnect the quiescent load of system peripherals.
The MAX20310 includes a programmable power controller that allows the device to be configured for use in applications that require a true off state or for always-on applications. This controller provides a delayed reset signal, voltage sequencing, and customized button timing for on/off control and recovery hard reset.
