MAX14720 Power-Management Solution
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ABRIDGED DATA SHEET MAX14720/MAX14750 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 powermanagement 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-IQ, highefficiency switching converters: a buck-boost regulator and a synchronous buck regulator. These regulators feature a burst mode for increased efficiency during lightload 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 batterymonitoring 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 generalpurpose 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. Power-Management Solution ● 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 ● 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 • (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 ● Wearable Medical Devices ● Wearable Fitness Devices ● Portable Medical Devices Ordering Info

ABRIDGED DATA SHEET MAX14720/MAX14750 Power-Management Solution Typical Application Circuits 4.7µH HVILX HVOLX BUCK-BOOST Figure 10. Lithium Coin Cell Maxim Integrat

ABRIDGED DATA SHEET MAX14720/MAX14750 Power-Management Solution Typical Application Circuits (continued) 4.7µH HVILX HVOLX BUCK-BOOST Figure 13. Companion Li+ Rechargeable Maxim Integr

ABRIDGED DATA SHEET MAX14720/MAX14750 Power-Management Solution Ordering Information PART Package Information TEMP RANGE For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE Refer to Application Note 1891 +Denotes a lead(Pb)-free/RoHS-compliant package. *Future product—contact factory for availability. T =...