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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 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.
Benefits and 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
Applications
●● Wearable Medical Devices ●● Wearable Fitness Devices ●● Portable Medical Devices
Ordering Information appears at end of data sheet.
19-7685; Rev 11; 2/20
MAX14720/MAX14750
Power-Management Solution
Absolute Maximum Ratings
(Voltages Referenced to GND.) BIN, LIN, SDA, SCL, SWIN, BEN, SWOUT, SWEN,
LEN, HVEN, HVIN, HVOUT, MON, CAP, VCC, MPC, KIN, RST, KOUT.................................... -0.3V to +6.0V HVILX.......................................................-0.3V to VHVIN + 0.3V HVOLX.................................................-0.3V to VHVOUT + 0.3V BLX, BOUT...............................................-0.3V to (VBIN + 0.3V) LOUT........................................................ -0.3V to (VLIN + 0.3V) GND.......................................................................-0.3V to +0.3V
Continuous-Current into HVIN, BIN, SWIN ..................±1000mA Continuous-Current into Any Other Terminal .................±100mA Continuous Power Dissipation (multilayer board at +70°C): 5x5 Array 25-Ball 2.26mm x 2.14mm 0.4mm Pitch WLP
(derate 19.07mW/°C)....................................................1.525W Operating Temperature Range ........................... -40°C to +85°C Junction Temperature.......................................................+150°C Storage Temperature Range ............................ -65°C to +150°C Lead Temperature (soldering 10s) .................................. +300°C Soldering Temperature (reflow)........................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to.