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BQ25185 1-Cell, 1-A Standalone Linear Battery Charger with Power Path, Factory Mode, and Battery Tracking VINDPM
SLUSF65
October 2023
BQ25185
PRODUCTION DATA
CONTENTS
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BQ25185 1-Cell, 1-A Standalone Linear Battery Charger with Power Path, Factory Mode, and Battery Tracking VINDPM
1
1
Features
2
Applications
3
Description
4
Revision History
5
Description (continued)
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Thermal Information
7.4
Recommended Operating Conditions
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.1.1
Battery Charging Process
8.1.1.1
Trickle Charge
8.1.1.2
Pre-Charge
8.1.1.3
Fast Charge
8.1.1.4
ISET Pin Detection
8.1.1.5
Termination
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Input Voltage Based Dynamic Power Management (VINDPM)
8.3.2
Dynamic Power Path Management Mode (DPPM)
8.3.3
Battery Supplement Mode
8.3.4
Sleep Mode
8.3.5
SYS Regulation
8.3.6
ILIM/VSET Control
8.3.7
Protection Mechanisms
8.3.7.1
Input Overvoltage Protection
8.3.7.2
Battery Undervoltage Lockout
8.3.7.3
Battery Overcurrent Protection
8.3.7.4
System Overvoltage Protection
8.3.7.5
System Short Protection
8.3.7.6
Thermal Protection and Thermal Regulation
8.3.7.7
Safety Timer
8.3.8
Pushbutton Wake and Reset Input
8.3.8.1
Pushbutton Long Button Press Function - Factory mode
8.3.9
External NTC Monitoring (TS)
8.3.9.1
TS Biasing and Function
8.3.10
Status Pins
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Input Current and Battery Regulation Voltage - ILIM/VSET
9.2.2.2
Fast Charge Current- ISET
9.2.2.3
Recommended Passive Components
9.2.3
Application Curves
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Layout Example
10
Device and Documentation Support
10.1
Device Support
10.1.1
Third-Party Products Disclaimer
10.2
Receiving Notification of Documentation Updates
10.3
Support Resources
10.4
Trademarks
10.5
Electrostatic Discharge Caution
10.6
Glossary
11
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DLH|10
MPQF612
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slusf65_oa
slusf65_pm
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Data Sheet
BQ25185 1-Cell, 1-A Standalone Linear Battery Charger with Power Path, Factory Mode, and Battery Tracking VINDPM
1
Features
1-A linear battery charger
3.0-V to 18-V input voltage operating range
25-V tolerant input voltage
External resistor programmable operation:
ILIM/VSET sets battery regulation voltage to 3.6V, 3.65 V, 4.02 V, 4.1V, 4.2 V, 4.35 V, or 4.4 V
ILIM/VSET sets input current limit to 100 mA, 500 mA, or 1100 mA
ISET to set charge current from 5 mA to 1 A
Li-ion, Li-Poly, and LiFePO4 chemistries support
115-mΩ battery FET ON resistance
Up to 3.125-A discharge current to support high system loads
Power path management for powering the system and charging the battery
Regulated system voltage (SYS) at 4.5 V
Configurable input current limit
USB Suspend mode supported
Battery Tracking input voltage dynamic power management (VINDPM) for high impedance input sources
Dynamic power path management optimizes charging from weak adapters
Ultra low quiescent current
4-μA in Battery Only mode
30-μA Input adapter Iq in sleep mode
3.2-μA Battery discharge current in Factory Mode
Integrated fault protection
Input overvoltage protection (VIN_OVP)
Battery undervoltage protection (BUVLO)
Battery short protection (BATSC)
Battery overcurrent protection (BATOCP)
Input current limit protection (ILIM)
Thermal regulation (TREG) and thermal shutdown (TSHUT)
Battery thermal fault protection (TS)
S
afety timer fault
ISET and ILIM/VSET pin short/open protection.
