BQ24702PWR

Battery Chargers Overview

The BQ24702PWR is a highly integrated multichemistry battery charger controller and system power selector designed for notebook and sub-notebook applications. It supports multiple cell counts and chemistries, including lithium-ion. The device features dynamic power management to minimize charge time by maximizing wall-adapter usage. It includes an integrated 300-kHz PWM controller for buck regulation, offering ±0.4% charge voltage accuracy and ±4% current accuracy. Operating from a supply voltage up to 28V, it provides zero-volt operation and depleted battery detection. The component is housed in a 24-pin TSSOP package.

Battery Chargers Feature Summary

• Dynamic Power Management (DPM) adjusts charge current based on total system current to maximize adapter utilization
• Integrated selector supports battery conditioning and smart battery learn cycles with break-before-make transition
• Zero-volt operation capability allows charging of deeply discharged batteries
• Depleted battery detection and indication protects against over-discharge conditions

Battery Chargers Applications

• Notebook computer battery charging systems
• Sub-notebook PC power management
• Multichemistry battery pack protection and control
• Smart battery learning cycle implementations

Battery Chargers Procurement Notes

Verify the specific suffix PWR indicates the 24-TSSOP package variant when sourcing. Confirm RoHS3 compliance status as per manufacturer documentation. Ensure compatibility with existing thermal design requirements for the TSSOP footprint. Cross-reference the datasheet revision to confirm feature availability. Validate that the multichemistry support aligns with the target battery chemistry selection.

Battery Chargers Selection Notes

Select this component for applications requiring precise voltage regulation and dynamic power sharing between system load and battery charging. The integrated selector simplifies power path management compared to discrete solutions. Consider the 24-pin TSSOP package for space-constrained designs where QFN options are not available. Evaluate the need for external programming via DAC or resistor dividers for current limits.

Battery Chargers Part Context

This part belongs to the BQ24702/03 family of multichemistry battery chargers. It shares functional similarities with the BQ24703 but lacks the QFN package option. The series is tailored for portable computing devices requiring efficient power management. It complements other Texas Instruments battery management components like protection ICs.

Battery Chargers Replacement Considerations

BQ24702PW is a direct pin-compatible alternative in the same package family. Verify if the BQ24703 offers necessary package differences for layout constraints. Check for updated revisions within the BQ24702 series for improved thermal performance.