MAX14690HEWX+T Analog Devices

Click here for production status of specific part numbers. MAX14690 PMIC with Ultra-Low I Voltage Regulators and Q Battery Charger for Small Lithium Ion Systems General Description Benefits and Features The MAX14690 is a battery-charge-management solution Extend System Use Time Between Battery Charging ideal for low-power wearable applications. The device Dual Ultra-Low-I 200mA Buck Regulators Q includes a linear battery charger with a smart power Output Programmable from 0.8V to 1.8V and 1.5V to 3.3V selector and several power-optimized peripherals. The MAX14690 features two ultra-low-power buck regulators 0.9A (typ) Quiescent Current Automatic Burst or Forced-PWM Modes with a typical quiescent current of 900nA. In addition, three ultra-low power low-dropout (LDO) linear regulators, Three Ultra-Low-I 100mA LDOs Q with a typical quiescent current of 600nA are included. Output Programmable from 0.8V to 3.6V In total, the MAX14690 can provide up to five regulated 0.6A (typ) Quiescent Current voltages, each with an ultra-low quiescent current, 2.7V to 5.5V Input with Dedicated Pin critical to battery life for the unique power profile in 24/7 Easy-to-Implement Li+ Battery Charging operation devices, such as those in the wearable market. Smart Power Selector The battery charger features a smart power selector that 28V/-5.5V Tolerant Input allows operation on a dead battery when connected to a Thermistor Monitor power source. To avoid overloading a power adapter, the Minimize Solution Footprint Through High Integration input current to the smart power selector is limited based Provides Five Regulated Voltage Rails 2 on an I C register setting. If the charger power source Switch Mode Option on Each LDO is unable to supply the entire system load, the smart power control circuit supplements the system load with Optimize System Control current from the battery. Monitors Pushbutton for Ultra-Low Power Mode Power-On Reset Delay and Voltage Sequencing The two synchronous, high-efficiency step-down buck On-Chip Voltage Monitor Multiplexer regulators feature a fixed-frequency PWM mode for tighter regulation and a burst mode for increased Applications efficiency during light-load operation. The output voltage Wearable Electronics 2 of these regulators can be programmed through I C with Fitness Monitors the default preconfigured. Portable Medical Devices The three configurable LDOs each have a dedicated Block Diagram input pin. Each LDO regulator output voltage can be 2 programmed through I C with the default preconfigured. MAX14690 The linear regulators can also be configured to operate as power switches that may be used to disconnect the LINEAR 28VINPUT POWER Li+BATTERYCHARGER quiescent load of the system peripherals. PROTECTION WITHPOWERSELECTOR The MAX14690 features a programmable power controller POWER that allows the device to be configured for applications BUCK 1 SEQUENCER that require the device be in a true-off, or always-on, state. The controller also provides a delayed reset signal MONITOR BUCK 2 and voltage sequencing. LDO/SWITCH 1 The MAX14690 is available in a 36-bump, 0.4mm pitch, CONTROL DATA 2.72mm x 2.47mm wafer-level package (WLP). LDO/SWITCH 2 SYS LDO/SWITCH 3 Ordering Information appears at end of data sheet. 19-7480 Rev 13 1/20MAX14690 PMIC with Ultra-Low I Voltage Regulators and Q Battery Charger for Small Lithium Ion Systems Typical Application Circuit MAX14690 CAP SET Li+ BATTERY THM CHARGER WITH SMART POWER CHGIN BAT 1 F SELECTOR GND 1F 1F EXT VSYS 10F (*) SYS SCL VB1 SCL B1OUT SDA SDA 10F BUCK 1 2.2F B1LX INT INT VB2 MPC0 B2OUT MPC0 MPC1 CONTROL BUCK 2 10F 2.2F MPC1 B2LX PFN2 PFN2 VSYS RST RST L1IN LDO/ PFN1 VL1 1F SWITCH 1 L1OUT VSYS LED VSYS L2IN LDO/ VL2 1F SWITCH 2 L2OUT VSYS MON MUX/ MON L3IN DIVIDER LDO/ VL3 1F SWITCH 3 L3OUT * OPTIONAL EXTERNAL FET Maxim Integrated 2 www.maximintegrated.com