SLUSFH4A March 2025 – July 2025 BQ25858-Q1 , BQ25858B-Q1
PRODUCTION DATA
- 1
- 1 Features
- 2 Applications
- 3 Description
- 4 Device Comparison
- 5 Pin Configuration and Functions
- 6 Specifications
-
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
- 7.3.4 Power Management
- 7.3.5 Bidirectional Power Flow and Programmability
- 7.3.6 Switching Frequency Dithering Feature
- 7.3.7 Integrated 16-Bit ADC for Monitoring
- 7.3.8 Status Outputs (PG, STAT and INT)
- 7.3.9
Protections
- 7.3.9.1
Voltage and Current Monitoring
- 7.3.9.1.1 VAC Over-voltage Protection (VAC_OVP)
- 7.3.9.1.2 VAC Under-voltage Protection (VAC_UVP)
- 7.3.9.1.3 Reverse Mode Over-voltage Protection (REV_OVP)
- 7.3.9.1.4 Reverse Mode Under-voltage Protection (REV_UVP)
- 7.3.9.1.5 DRV_SUP Under-voltage and Over-voltage Protection (DRV_OKZ)
- 7.3.9.1.6 REGN Under-voltage Protection (REGN_OKZ)
- 7.3.9.2 Thermal Shutdown (TSHUT)
- 7.3.9.1
Voltage and Current Monitoring
- 7.3.10 Serial Interface
- 7.4 Device Functional Modes
- 7.5 BQ25858-Q1/858B-Q1 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
- 8.2.2 Typical Application (Buck-only configuration)
- 8.2.1
Typical Application (Buck-Boost configuration)
- 8.3 Power Supply Recommendations
- 8.4 Layout
- 9 Device and Documentation Support
- 10Revision History
- 11Mechanical, Packaging, and Orderable Information
封裝選項
請參考 PDF 數據表獲取器件具體的封裝圖。
機械數據 (封裝 | 引腳)
- RRV|36
散熱焊盤機械數據 (封裝 | 引腳)
- RRV|36
訂購信息
8.2.1.3 Application Curves
CVAC = 160μF, COUT = 160μF, VVAC = 20V, VOUT = 5V (unless otherwise specified)
| VAC = 20V |
| VAC = 20V |
| VAC = 20V | VOUT = 15V | IOUT = 5A |
| VAC = 20V | VOUT = 20V | IOUT = 5A |
| VAC = 20V | VOUT = 5V | ILOAD = 0.5A → 4.5A |
| VAC = 20V | VOUT = 20V | ILOAD = 0.5A → 4.5A |
| VAC = 20V | VOUT = 28V | ILOAD = 0.5A → 4.5A |
| VAC = 20V | VOUT = 36V | ILOAD = 0.5A → 4.5A |
| VAC = 20V | VOUT = 48V | ILOAD = 0.5A → 4.5A |
| VOUT = 24V | VAC_REV = 20V | ILOAD = 4A |
| VOUT = 28V | VAC_REV = 28V | ILOAD = 0.5A → 4.5A |
| VAC = 20V → 0V |
| VAC = 20V |
| VAC = 20V | VOUT = 28V | IOUT = 5A |
| VAC = 20 V |
| VAC = 48V | VOUT = 5V | ILOAD = 0.5A → 4.5A |
| VAC = 48V | VOUT = 20V | ILOAD = 0.5A → 4.5A |
| VAC = 48V | VOUT = 28V | ILOAD = 0.5A → 4.5A |
| VAC = 48V | VOUT = 36V | ILOAD = 0.5A → 4.5A |
| VAC = 48V | VOUT = 48V | ILOAD = 0.5A → 4.5A |
| VOUT = 28V | VAC_REV = 5V | ILOAD = 0.5A → 4.5A |
| VOUT = 28V | VAC_REV = 48V | ILOAD = 0.5A → 4.5A |