ZHCS292H september 2009 – february 2021 BQ24040 , BQ24041 , BQ24045
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 Device Comparison
- 6 Pin Configuration and Functions
- 7 Specifications
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3 Feature Description
- 8.4
Device Functional Modes
- 8.4.1 CHG and PG LED Pull-up Source
- 8.4.2 Auto Start-up (BQ24041)
- 8.4.3 IN-DPM (VIN-DPM or IN-DPM)
- 8.4.4 OUT
- 8.4.5 ISET
- 8.4.6 PRE_TERM – Pre-Charge and Termination Programmable Threshold, BQ24040/5
- 8.4.7 ISET2
- 8.4.8 TS (BQ24040/5)
- 8.4.9 Termination and Timer Disable Mode (TTDM) - TS Terminal High
- 8.4.10 Timers, BQ24040 and BQ24045 only
- 8.4.11 Termination
- 8.4.12 Battery Detect Routine
- 8.4.13 Refresh Threshold
- 8.4.14 Starting a Charge on a Full Battery
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DSQ|10
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購(gòu)信息
9.2.1.3 Application Curves
SETUP: BQ24040 typical applications schematic; VIN = 5V, VBAT = 3.6V (unless otherwise indicated)
| 10k? resistor from TS to GND. 10k? is shorted to disable the IC | ||
.
Figure 9-8 TS Enable and Disable ?
| Continuous battery detection when not in TTDM | ||
| CH4: IOUT (1A/Div) |
| CH4: IOUT (0.2A/Div) | ||
| The IC temperature rises to 125°C and enters thermal regulation. Charge current is reduced to regulate the IC at 125°C. VIN is reduced, the IC temperature drops, the charge current returns to the programmed value |
Fixed 10k? resistor, between TS and GND.
Figure 9-9 Hot Plug Source w/No Battery – Battery Detection ?
| CH4: IOUT (1A/Div) | ||
| Battery voltage swept from 0V to 4.25V to 3.9V. | ||
| CH4: IOUT (0.2A/Div) |
| VIN swept from 5V to 3.9V to 5V | VBAT = 4V | |