SLUSDU0A
september 2019 – august 2023
BQ21061
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Linear Charger and Power Path
7.3.1.1
Battery Charging Process
7.3.1.2
JEITA and Battery Temperature Dependent Charging
7.3.1.3
Input Voltage Based Dynamic Power Management (VINDPM) and Dynamic Power Path Management (DPPM)
7.3.1.4
Battery Supplement Mode
7.3.2
Protection Mechanisms
7.3.2.1
Input Over-Voltage Protection
7.3.2.2
Safety Timer and I2C Watchdog Timer
7.3.2.3
Thermal Protection and Thermal Charge Current Foldback
7.3.2.4
Battery Short and Over Current Protection
7.3.2.5
PMID Short Circuit
7.3.3
VDD LDO
7.3.4
Load Switch/LDO Output and Control
7.3.5
PMID Power Control
7.3.6
System Voltage (PMID) Regulation
7.3.7
MR Wake and Reset Input
7.3.7.1
MR Wake or Short Button Press Functions
7.3.7.2
MR Reset or Long Button Press Functions
7.3.8
14-Second Watchdog for HW Reset
7.3.9
Faults Conditions and Interrupts ( INT)
7.3.9.1
Flags and Fault Condition Response
7.3.10
Power Good ( PG) Pin
7.3.11
External NTC Monitoring (TS)
7.3.11.1
TS Thresholds
7.3.12
I2C Interface
7.3.12.1
F/S Mode Protocol
7.4
Device Functional Modes
7.4.1
Ship Mode
7.4.2
Low Power
7.4.3
Active Battery
7.4.4
Charger/Adapter Mode
7.4.5
Power-Up/Down Sequencing
7.5
Register Map
7.5.1
I2C Registers
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Input (IN/PMID) Capacitors
8.2.2.2
VDD, LDO Input and Output Capacitors
8.2.2.3
TS
8.2.2.4
Recommended Passive Components
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.2
Documentation Support
11.2.1
Related Documentation
11.3
Receiving Notification of Documentation Updates
11.4
Support Resources
11.5
Electrostatic Discharge Caution
11.6
Trademarks
11.7
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
YFP|20
MXBG090K
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slusdu0a_oa
slusdu0a_pm
1
Features
Linear battery charger with 1.25-mA to 500-mA fast charge current range
0.5% Accurate I
2
C programmable battery regulation voltage ranging from 3.6 V to 4.6 V in 10-mV steps
Configurable termination current supporting down to 0.5 mA
20-V Tolerant input with typical 3.4-V to 5.5-V input voltage operating range
Programmable thermal charging profile, fully configurable hot, warm, cool and cold thresholds
Power Path management for powering system and charging battery
I
2
C Programmable regulated system voltage (PMID) ranging from 4.4V to 4.9V in addition to battery voltage tracking and Input pass-though options
Dynamic power path management optimizes charging from weak adapters
Advanced I
2
C control allows host to disconnect the battery or adapter as needed
I
2
C Configurable load switch or up to 150-mA LDO output
Programmable range from 0.6 V to 3.7 V in 100-mV steps
Ultra low Iddq for extended battery life
10-nA Ship mode battery Iq
400-nA Iq While powering the system (PMID and VDD on)
One push-button wake-up and reset input with adjustable timers
Supports system power cycle and HW reset
Safety-Related Certifications
TUV IEC 62368 Certification
20-Pin 2-mm x 1.6-mm CSP package
11-mm
2
Total solution size