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MAX14750_MAX14720 Maxim Integrated Compact Power Management Solution
Portable Medical Devices
Wearable Fitness Devices
Wearable Medical Devices
MAX14750_MAX14720 Maxim Integrated Compact Power Management Solution

Key Features
Extended System Battery Use Time
Micro-IQ 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-IQ 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-IQ 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
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-IQ, 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.
Typical Application Circuit:
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