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Texas Instruments BQ25898 | Demoboard TIDA-03042

Tiny I2C-Controlled Single-Cell Charger Reference Design for Wearable Applications

Overview

TopologyOther Topology
IC revisionE1

Description

The TIDA-03042 TI Design is a single-cell charger reference design for wearable applications which have a very limited design space. TIDA-03042 works with a host controller through I2C control, supports 5-V, 9-V, or 12-V input adaptors and can charge up to 1.5 A. The actual charger design only requires a space of 1.7 cm², allowing for high charging efficiency while minimizing the total count of components and board size.

Features

  • Up to 1.5A single-cell charger
  • Charge efficiency of 92% at 0.5A and 1.5A
  • Low-power PFM mode for light load operations
  • High-input voltage operation range from 3.9V to 14V

Typical applications

  • Augmented reality glasses, Headsets/headphones & earbuds, Smart trackers, Smartwatch, Virtual reality headset, weigh scale
  • Automotive test, Dashboard camera, GPS personal navigation device
  • Spectrometer

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
Version Samples
74479275210SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-PMCI Power Molded Chip Inductor 1 3.7 1.55 3.45 75 120 Standard
Order Code Data­sheet Simu­lation
74479275210SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IR
(A)
ISAT1
(A)
ISAT2
(A)
RDC max.
(mΩ)
fres
(MHz)
Version Samples