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reference designBQ25898 | Demoboard PMP15011

Texas Instruments BQ25898 | Demoboard PMP15011

Cascade Dual Charger Reference Design for 1S Li-Ion Battery-Powered End Equipment

Overview

TopologyBuck Converter
Input voltage4.5-14 V
Output 14.2 V / 5 A
IC revision1

Description

Smartphones and other handheld devices with 3AHr+ 1S Li-Ion batteries require 3 A of charger current or greater for fast charging. Parallel chargers allow for high-charge current which result in shorter charge time, which simultaneously distribute the heat losses across the end-equipment PCB, thereby preventing hotspots. This design uses a cascade configuration with the PMID pin of a master charger connected to the VBUS pin of a slave charger; the input current limit management is handled through a master charger, which simplifies software development.

Features

  • Master Charger: Provides System Power, Charging Current, Supplement Mode, Temperature Profile and 2.4-A USB On-the-Go Boost Current in 4×4-mm QFN Package
  • Slave Charger: Exclusively Provides Extra-Fast Charge Current, up to 3 A in 2.8×2.5-mm WCSP Package
  • Innovative Input Source Detection and Current Optimizer (ICO) with Input Dynamic Power Management (DPM)
  • Integrated 7-Bit ADC for Battery and Adaptor Monitoring

Typical applications

  • Smartphones/ Tablets/ Portable Media Players/ Other Portable Handheld Equipment with 3AHr+ 1S Li-Ion Batteries

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
SamplesAvailability & Sample
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74438356010
SPECWE-MAPI SMT Power Inductor, 1 µH, 10.1 A

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1 µH
Performance Rated Current10.1 A
Saturation Current @ 30%11.5 A
DC Resistance12 mΩ
Self Resonant Frequency55 MHz
Operating Voltage80 V
MountSMT 
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