MAX77734
MAX77734 is Ultra-Low Power Tiny PMIC manufactured by Maxim Integrated.
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Ultra-Low Power Tiny PMIC with Power Path Charger for Small Li+ and 150m A LDO
General Description
The MAX77734 is a tiny PMIC for applications where size and simplicity are critical. The IC integrates a linear-mode Li+ battery charger, low-dropout linear regulator (LDO), analog multiplexer, and dual-channel current sink driver.
The charger is designed for small-battery systems that require accurate termination as low as 0.375m A. The circuit can instantly regulate the system voltage when an input source is connected even if the battery is depleted.
The 150m A LDO's output is programmable between 0.8V and 3.975V with I2C. The analog MUX enables an external ADC to perform conversions on battery V&I signals for power monitoring. The current sinks are capable of sinking 12.8m A each and can be programmed for LEDs to blink in custom patterns.
The MAX77734 is available in a 20-bump, 0.4mm pitch wafer-level package (WLP). For a similar product with additional regulators, see the MAX77650.
Applications
- - Hearables: Headsets, Headphones, Earbuds
- - Fitness Bands and other Bluetooth Wearables
- - Action Cameras, Wearable/Body Cameras
- - Low-Power Internet of Things (Io T) Gadgets
Simplified Application Circuit
Benefits and Features
- - Extends Battery Life
- 200n A Factory-Ship Mode for Long Shelf Life
- 500n A Shutdown Current
- 4.5μA Quiescent Current with LDO Enabled
- Charger Allows Battery to Relax after Charging
- - Linear Charger Optimized for Small Battery Size
- 7.5m A to 300m A Fast-Charge Current
- Battery Regulation Voltage from 3.6V to 4.6V
- Accurate Termination Current as low as 0.375m A
- Instant-On Functionality provided by Maxim's Smart Power Selector™
- JEITA Battery Temperature Monitors for Safe Charging
- - Highly Integrated
- 150m A LDO with Power-OK Output
- Dual-Channel Current Sink for LEDs
- Analog Multiplexer for Power...
