Analog Devices / Maxim Integrated MAX77734 Tiny PMIC
Analog Devices MAX77734 Tiny PMIC is for applications where size and simplicity are critical, like wearables, fitness bands, action cameras, and more. The IC integrates a linear-mode Li+ battery charger, low-dropout linear regulator (LDO), analog multiplexer, and dual-channel current sink driver. The charger in the Analog Devices MAX77734 is designed for small-battery systems that require accurate termination as low as 0.375mA. The circuit can instantly regulate the system voltage when an input source is connected, even if the battery is depleted.
Features
- Extends Battery Life
- 200nA Factory-Ship Mode for Long Shelf Life
- 500nA Shutdown Current
- 4.5μA Quiescent Current with LDO Enabled
- Charger Allows Battery to Relax after Charging
- Linear Charger Optimized for Small Battery Size
- 7.5mA to 300mA Fast-Charge Current
- Battery Regulation Voltage from 3.6V to 4.6V
- Accurate Termination Current as low as 0.375mA
- Instant-On Functionality provided by Maxim's Smart Power Selector™
- JEITA Battery Temperature Monitors for Safe Charging
- Highly Integrated
- 150mA LDO with Power-OK Output
- Dual-Channel Current Sink for LEDs
- Analog Multiplexer for Power Monitoring
- Watchdog Timer
- On-Key Input for LDO Enable and Manual Reset
- Small Size
- 2.23mm x 1.97mm (0.5mm max height) WLP
- 20-Bump, 0.4mm Pitch, 4 x 5 Array
- 12.25mm2 Total Solution Size
Applications
- Hearables: Headsets, Headphones, Earbuds
- Fitness Bands and other Bluetooth Wearables
- Action Cameras, Wearable/Body Cameras
- Low-Power Internet of Things (IoT) Gadgets
Application Circuit
Evaluation Kit
Analog Devices / Maxim Integrated MAX77734EVKIT Evaluation Kit
Fully assembled and tested printed circuit board (PCB) that demonstrates the MAX77734.
Published: 2017-09-27
| Updated: 2023-04-13