MAX14720/MAX14750
Power-Management Solution
General Description
Benefits and Features
● Extended System Battery Use Time
The MAX14720/MAX14750 are compact power-management
solutions for space-constrained, battery-powered applications
where size and efficiency are critical. Both devices integrate
a power switch, a linear regulator, a buck regulator, and a
buck-boost regulator.
•ꢀ Micro-I 250mW Buck-Boost Regulator
Q
- Input Voltage from 1.8V to 5.5V
- Output Voltage Programmable from 2.5V to 5V
- 1.1µA Quiescent Current
- Programmable Current Limit
The MAX14720 is designed to be the primary power-
management device and is ideal for either non-rechargeable
battery (coin-cell, dual alkaline) applications or for
rechargeable solutions where the battery is removable
and charged separately. The device includes a button
monitor and sequencer.
•ꢀ Micro-I 200mA Buck Regulator
Q
- Input Voltage from 1.8V to 5.5V
- Output Voltage Programmable from 1.0V to 2.0V
- 0.9µA Quiescent Current
•ꢀ Micro-I 100mA LDO
Q
- Input Voltage From 1.71V to 5.5V
- Output Programmable From 0.9V to 4.0V
- 0. 9µA Quiescent Current
The MAX14750 works well as a companion to a charger
or PMIC in rechargeable applications. It provides direct
pin control of each function and allows greater flexibility
for controlling sequencing.
- ConfigurableꢀasꢀLoadꢀSwitch
● Extend Product Shelf-Life
•ꢀ Battery Seal Mode (MAX14720)
- 120nA Battery Current
The devices include two programmable micro-I , high-
Q
efficiency switching converters: a buck-boost regulator
and a synchronous buck regulator. These regulators
feature a burst mode for increased efficiency during light-
load operation.
•ꢀ Power Switch On-Resistance
- 250mΩꢀ(max)ꢀatꢀ2.7V
- 500mΩꢀ(max)ꢀatꢀ1.8V
•ꢀ Battery Impedance Detector
The low-dropout linear regulator has a programmable
output. It can also operate as a power switch that can
disconnect the quiescent load of system peripherals.
● Easy-to-Implement System Control
•ꢀ ConfigurableꢀPowerꢀModeꢀandꢀResetꢀBehaviorꢀ
(MAX14720)
The devices also include a power switch with battery-
monitoring capability. The switch can isolate the battery
from all system loads to maximize battery life when not
operating. It is also used to isolate the battery-impedance
measurements. This switch can operate as a general-
purpose load switch as well.
- Push-Button Monitoring to Enable Ultra-Low
Power Shipping Mode
- Disconnects All Loads From Battery and
Reduces Leakage to Less than 1µA
- Power-On Reset (POR) Delay and Voltage
Sequencing
The MAX14720 includes a programmable power controller
that allows the device to be configured either 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.
•ꢀ Individual Enable Pins (MAX14750)
•ꢀ Voltage Monitor Multiplexer
2
•ꢀ I C Control Interface
Applications
● Wearable Medical Devices
● Wearable Fitness Devices
● Portable Medical Devices
Both devices also include a multiplexer for monitoring the
power inputs and outputs of each function.
These devices are available in a 25-bump, 0.4mm pitch,
2.26mm x 2.14mm wafer-level package (WLP) and operate
over the -40°C to +85°C extended temperature range.
Ordering Information appears at end of data sheet.
19-7685; Rev 2; 8/16
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