MAX20362
RECOMMENDED FOR NEW DESIGNSHigh Peak Load PMIC for Low-Power-Density Batteries
- Part Models
- 2
- 1ku List Price
- Starting From $2.00
Overview
- Low-Power Energy Buffering and with One Inductor
- Ultra-Low 2.8μA IQ
- 5mA to 50mA Input-Current Limit, 1mA Steps
- 128mA Max BBOUT Current
- Flexible VCAP Storage Voltages from 1.6V to 9.5V
- Adjustable VBBOUT from 1.5V to 5.5V, 50mV Steps
- Ultra-Fast DVS with PPG AFE Interoperability
- Up to 70% LED Power Savings in PPG Systems
- Small, Flexible Solution
- I2C MCU Interface
- Proprietary Digital Interface to ADI PPG AFEs
- Tiny Inductor Options
- 0603 (balance efficiency/size)
- 0402 (smallest size)
- 2.53mm x 1.69mm, 24-Bump 0.4mm Pitch WLP
The MAX20362 is a power management IC (PMIC) designed to facilitate the power requirements of high peak-load currents in wearable medical and wellness devices using low-power-density batteries. One such application is the delivery of high peak LED currents in photoplethysmography (PPG) subsystems in instances where low-power-density batteries are in use. The device features low quiescent current (2.8μA typ), a high-efficiency multidirectional buck-boost converter, and a low quiescent current (0.75μA typ) fast transient response LDO.
The buck-boost converter operates over a wide input/output voltage range and features a capacitor/supercapacitor charging mode which uses a precise switch-mode input-current limiter to prevent battery current overdraw in systems with weak batteries. The buffer capacitance is then used to supply high peak loads on the BBOUT node, thereby protecting the battery from large peak currents.
The low IQ LDO is optimized for fast transient response to preserve the highly sensitive PPG analog front end (AFE) signal-to-noise ratio (SNR).
APPLICATIONS
- Fitness/Wellness Heart Rate Trackers
- Medical Vital Signs Patches
Documentation
Data Sheet 1
User Guide 1
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 |
|---|---|---|---|
| MAX20362AEWG+ | WLCSP | ||
| MAX20362AEWG+T | WLCSP |
This is the most up-to-date revision of the Data Sheet.
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