MAX14690

PRODUCTION

PMIC with Ultra-Low I_Q Voltage Regulators and Battery Charger for Small Lithium Ion Systems

Extends Battery Life of Wearable Electronics

Data Sheet (Rev. 13) Product Selection Table

Part Models: 8
1ku List Price: Starting From $2.87

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Overview

Extend System Use Time Between Battery Charging
- Dual Ultra-Low-IQ 200mA Buck Regulators
  - Output Programmable from 0.8V to 1.8V and 1.5V to 3.3V
  - 0.9µA (typ) Quiescent Current
  - Automatic Burst or Forced-PWM Modes
- Three Ultra-Low-IQ 100mA LDOs
  - Output Programmable from 0.8V to 3.6V
  - 0.6µA (typ) Quiescent Current
  - 2.7V to 5.5V Input with Dedicated Pin
Easy-to-Implement Li+ Battery Charging
- Smart Power Selector
- 28V/-5.5V Tolerant Input
- Thermistor Monitor
Minimize Solution Footprint Through High Integration
- Provides Five Regulated Voltage Rails
- Switch Mode Option on Each LDO
Optimize System Control
- Monitors Pushbutton for Ultra-Low Power Mode
- Power-On Reset Delay and Voltage Sequencing
- On-Chip Voltage Monitor Multiplexer

The MAX14690 is a battery-charge-management solution ideal for low-power wearable applications. The device includes a linear battery charger with a smart power selector and several power-optimized peripherals. The MAX14690 features two ultra-low-power buck regulators with a typical quiescent current of 900nA. In addition, three ultra-low power low-dropout (LDO) linear regulators, with a typical quiescent current of 600nA are included. In total, the MAX14690 can provide up to five regulated voltages, each with an ultra-low quiescent current, critical to battery life for the unique power profile in 24/7 operation devices, such as those in the wearable market.

The battery charger features a smart power selector that allows operation on a dead battery when connected to a power source. To avoid overloading a power adapter, the input current to the smart power selector is limited based on an I²C register setting. If the charger power source is unable to supply the entire system load, the smart power control circuit supplements the system load with current from the battery.

The two synchronous, high-efficiency step-down buck regulators feature a fixed-frequency PWM mode for tighter regulation and a burst mode for increased efficiency during light-load operation. The output voltage of these regulators can be programmed through I²C with the default preconfigured.

The three configurable LDOs each have a dedicated input pin. Each LDO regulator output voltage can be programmed through I²C with the default preconfigured. The linear regulators can also be configured to operate as power switches that may be used to disconnect the quiescent load of the system peripherals.

The MAX14690 features a programmable power controller that allows the device to be configured for applications that require the device be in a true-off, or always-on, state. The controller also provides a delayed reset signal and voltage sequencing.

The MAX14690 is available in a 36-bump, 0.4mm pitch, 2.72mm x 2.47mm wafer-level package (WLP).

Applications

Fitness Monitors
Portable Medical Devices
Wearable Electronics

Part Models: 8
1ku List Price: Starting From $2.87

Documentation

Data Sheet 1

MAX14690: PMIC with Ultra-Low I_Q Voltage Regulators and Battery Charger for Small Lithium Ion Systems Data Sheet (Rev.13) 01/16/2020

Reliability Data 1

MAX14690 Reliability Data 01/12/2023

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
MAX14690AEWX+	36-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14690AEWX+T	36-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14690CEWX+T	36-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14690HEWX+	36-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14690HEWX+T	36-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14690JEWX+T	36-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14690NEWX+	36-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
MAX14690NEWX+T	36-WLCSP-N/A	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Sep 20, 2017 - 1736 TEST
		pcn_1736
MAX14690AEWX+	PRODUCTION
MAX14690AEWX+T	PRODUCTION
MAX14690CEWX+T
MAX14690HEWX+	PRODUCTION
MAX14690HEWX+T	PRODUCTION
MAX14690JEWX+T
MAX14690NEWX+	PRODUCTION
MAX14690NEWX+T	PRODUCTION
Oct 7, 2016 - 1600 ASSEMBLY
		pcn_1600
MAX14690AEWX+	PRODUCTION
MAX14690AEWX+T	PRODUCTION
MAX14690CEWX+T
MAX14690HEWX+T	PRODUCTION
MAX14690JEWX+T
MAX14690NEWX+	PRODUCTION
Jul 19, 2016 - 1594_AMENDED ASSEMBLY
		pcn_1594_amended
MAX14690AEWX+T	PRODUCTION
MAX14690CEWX+T
Dec 8, 2015 - 1594_PRE-PCN WAFER FAB
		pcn_1594_pre-pcn
MAX14690AEWX+T	PRODUCTION
MAX14690CEWX+T

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX14690

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Features and Benefits

RoHS Compliant
Proven PCB Layout
Full Assembled and Tested
I²C Serial Interface

Product Details

The MAX14690 evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX14690 wearable charge-management solution with I²C capability for lowpower wearable application. The device includes a linear battery charger, Smart Power Selector™, two ultra-low quiescent current buck regulators, and three low-dropout (LDO) linear regulators.

Refer to the MAX14690 IC data sheet for detailed information regarding the operation and features of the devices.