SLUSFB0
August 2024
BQ25758S
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Device Comparison
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
Device Power-On-Reset
7.3.2
Device Power-Up From Battery Without Input Source
7.3.3
Device Power Up from Input Source
7.3.3.1
VAC Operating Window Programming (ACUV and ACOV)
7.3.3.2
MODE Pin Configuration
7.3.3.3
REGN Regulator (REGN LDO)
7.3.3.4
Switching Frequency and Synchronization (FSW_SYNC)
7.3.3.5
Device HIZ Mode
7.3.4
Power Management
7.3.4.1
Output Voltage Programming (VOUT_REG)
7.3.4.2
Output Current Programming (IOUT pin and IOUT_REG)
7.3.4.3
Dynamic Power Management: Input Voltage and Input Current Regulation
7.3.4.3.1
Input Current Regulation
7.3.4.3.1.1
IIN Pin
7.3.4.3.1.2
Multi-Level Current Limit (Overload Mode)
7.3.4.3.2
Input Voltage Regulation
7.3.4.4
Bypass Mode
7.3.5
Bidirectional Power Flow and Programmability
7.3.6
Integrated 16-Bit ADC for Monitoring
7.3.7
Status Outputs (PG, STAT and INT)
7.3.7.1
Power Good Indicator (PG)
7.3.7.2
Interrupt to Host (INT)
7.3.8
Protections
7.3.8.1
Voltage and Current Monitoring
7.3.8.1.1
VAC Over-voltage Protection (VAC_OVP)
7.3.8.1.2
VAC Under-voltage Protection (VAC_UVP)
7.3.8.1.3
Reverse Mode Over-voltage Protection (REV_OVP)
7.3.8.1.4
Reverse Mode Under-voltage Protection (REV_UVP)
7.3.8.1.5
DRV_SUP Under-voltage and Over-voltage Protection (DRV_OKZ)
7.3.8.1.6
REGN Under-voltage Protection (REGN_OKZ)
7.3.8.2
Thermal Shutdown (TSHUT)
7.3.9
Serial Interface
7.3.9.1
Data Validity
7.3.9.2
START and STOP Conditions
7.3.9.3
Byte Format
7.3.9.4
Acknowledge (ACK) and Not Acknowledge (NACK)
7.3.9.5
Target Address and Data Direction Bit
7.3.9.6
Single Write and Read
7.3.9.7
Multi-Write and Multi-Read
7.4
Device Functional Modes
7.4.1
Host Mode and Default Mode
7.4.2
Register Bit Reset
7.5
BQ25758S Registers
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Typical Application (Buck-Boost configuration)
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
ACUV / ACOV Input Voltage Operating Window Programming
8.2.1.2.2
Switching Frequency Selection
8.2.1.2.3
Inductor Selection
8.2.1.2.4
Input (VAC) Capacitor
8.2.1.2.5
Output (VBAT) Capacitor
8.2.1.2.6
Sense Resistor (RAC_SNS and RBAT_SNS) and Current Programming
8.2.1.2.7
Converter Fast Transient Response
8.2.1.3
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
Receiving Notification of Documentation Updates
11.3
Support Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Revision History
13
Mechanical, Packaging, and Orderable Information
13.1
Packaging Information
13.2
Tape and Reel Information
13.3
Mechanical Data
デバイスごとのパッケージ図は、PDF版データシートをご参照ください。
メカニカル・データ(パッケージ|ピン)
RRV|36
サーマルパッド・メカニカル・データ
1
Features
Wide input voltage operating range: 4.4V to
26V
Synchronous buck
boost DC/DC
controller with NFET drivers
Adjustable switching frequency from 200kHz to 600kHz
Optional synchronization to external clock
Integrated loop compensation with soft start
Selectable PFM operation for light load efficiency improvement
Optional gate driver supply input for optimized efficiency
Support USB-PD
Standard Power Range (SPR)
in forward and reverse power direction
Adjustable input and output voltage regulation from 3.3V to 26V with 20mV/step
Adjustable input and output current regulation (RAC_SNS, ROUT_SNS) from 400mA to 20A with 50mA/step using 5mΩ resistor
Bypass mode for highest efficiency with VOUT = VAC
Buck-only mode
High accuracy
±2% output
voltage regulation
±3% output
current regulation
±2% input voltage regulation
±3% input current regulation
I
2
C controlled for optimal system performance with resistor-programmable option
Hardware adjustable input and output current limits
Integrated
16-bit
ADC for voltage, current, and temperature monitoring
High safety integration
Adjustable input overvoltage and undervoltage protection
Output
Overvoltage and overcurrent protection
Thermal shutdown
Status outputs
Adapter present status (
PG
)
Switcher
Operation status
(STAT)
Package
36-pin 5mm × 6mm QFN