MAX14720 Datasheet, PDF (1/38 Pages) Maxim Integrated Products – Extended System Battery Use Time

MAX14720/MAX14750
Power-Management Solution
General Description
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.
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.
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.
The devices include two programmable micro-I_Q, high-
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.
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.
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.
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.
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.
Benefits and Features
●● Extended System Battery Use Time
• Micro-I_Q 250mW Buck-Boost Regulator
-- Input Voltage from 1.8V to 5.5V
-- Output Voltage Programmable from 2.5V to 5V
-- 1.1µA Quiescent Current
-- Programmable Current Limit
• Micro-I_Q 200mA Buck Regulator
-- Input Voltage from 1.8V to 5.5V
-- Output Voltage Programmable from 1.0V to 2.0V
-- 0.9µA Quiescent Current
• Micro-I_Q 100mA LDO
-- Input Voltage From 1.71V to 5.5V
-- Output Programmable From 0.9V to 4.0V
-- 0. 9µA Quiescent Current
-- Configurable as Load Switch
●● Extend Product Shelf-Life
• Battery Seal Mode (MAX14720)
-- 120nA Battery Current
• Power Switch On-Resistance
-- 250mΩ (max) at 2.7V
-- 500mΩ (max) at 1.8V
• Battery Impedance Detector
●● Easy-to-Implement System Control
• Configurable Power Mode and Reset Behavior
(MAX14720)
-- 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
• Individual Enable Pins (MAX14750)
• Voltage Monitor Multiplexer
• I²C Control Interface
Applications
●● Wearable Medical Devices
●● Wearable Fitness Devices
●● Portable Medical Devices
Ordering Information appears at end of data sheet.
19-7685; Rev 2; 8/16