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MAX20310
Ultra-Low Quiescent Current PMIC with
SIMO Buck-Boost for Wearable Applications
General Description
Benefits and Features
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 sys-
tem power management features like a push-button monitor
and sequencing controller.
● Extend System Battery Use Time
• Single Inductor, Multiple Output (SIMO) Ultra-Low
I
Buck-Boost Regulator
Q
• 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
The device includes a SIMO buck-boost switching regula-
tor 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.
• 84% Efficiency for 1.8V, 10mA Output
• Input Current Limited
• Dual Ultra-Low I 50mA LDO
Q
• 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
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.
• Configurable as Load Switch
● Extend Product Shelf-Life
• Battery Seal Mode
The MAX20310 includes
a programmable power
• 10nA Battery Current (typ)
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.
● 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
The device also features a multiplexer for monitoring the
power inputs and outputs of each function. The MAX20310
is available in a 16-bump 0.4mm pitch 1.63mm x 1.63mm
wafer-level package (WLP) and operates over the -40°C
to +85°C extended temperature range.
• Buffered Output
• Power Sequencing
• Reset Output
2
• I C Control Interface
Typical Operating Circuit
Applications
● Wearable Medical Devices
● Wearable Fitness Devices
● Portable Medical Devices
+1.8V +1.5V +1.2V +1.2V
VIO VAN VDD VSW
MAX20310
CAP
LX
BB1OUT
L1OUT
LDO
SIMO
BUCK-
BOOST
GND
BB2OUT
L2OUT
LDO
BATN
Ordering Information appears at end of data sheet.
KIN
KOUT
MPO
MON
RST
MPC
SCL
SDA
CONTROL
19-8611; Rev 2; 3/18