ZHCS292H september 2009 – february 2021 BQ24040 , BQ24041 , BQ24045
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)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
6 Pin Configuration and Functions
Figure 6-1 BQ24040 and BQ24045 DSQ Package 10-Pin WSONTop View
Figure 6-2 BQ24041 DSQ Package 10-Pin WSONTop ViewTable 6-1 Pin Functions
| PIN | I/O | DESCRIPTION | ||
|---|---|---|---|---|
| NAME | BQ24040 BQ24045 |
BQ24041 | ||
| IN | 1 | 1 | I | Input power, connected to external DC supply (AC adapter or USB port). Expected range of bypass capacitors 1μF to 10μF, connect from IN to VSS. |
| OUT | 10 | 10 | O | Battery Connection. System Load may be connected. Expected range of bypass capacitors 1μF to 10μF. |
| PRE-TERM | 4 | – | I | Programs the Current Termination Threshold
(5 to 50% of Iout which is set by ISET) and Sets the Pre-Charge
Current to twice the Termination Current Level. Expected range of programming resistor is 1k to 10k? (2k: Ipgm/10 for term; Ipgm/5 for precharge) |
| ISET | 2 | 2 | I | Programs the Fast-charge current setting. External resistor from ISET to VSS defines fast charge current value. Range is 10.8k (50mA) to 540? (1000mA). |
| ISET2 | 7 | 7 | I | Programming the Input/Output Current Limit for the USB
or Adaptor source: BQ24040/5 => High = 500mAmax, Low = ISET, FLOAT = 100mAmax. BQ24041 => High = 410mAmax, Low = ISET, FLOAT = 100mAmax. |
| TS | 9(1) | – | I | Temperature sense terminal connected to BQ24040/5 -10k at 25°C NTC thermistor, in the battery pack. Floating T terminal or pulling High puts part in TTDM “Charger” Mode and disable TS monitoring, Timers and Termination. Pulling terminal Low disables the IC. If NTC sensing is not needed, connect this terminal to VSS through an external 10 k? resistor. A 250k? from TS to ground will prevent IC entering TTDM mode when battery with thermistor is removed. |
| BAT_EN | – | 9 | I | Charge Enable Input (active low) |
| VSS | 3 | 3 | – | Ground terminal |
| CHG | 8 | 8 | O | Low (FET on) indicates charging and Open Drain (FET off) indicates no Charging or Charge complete. |
| PG | 5 | 5 | O | Low (FET on) indicates the input voltage is above UVLO and the OUT (battery) voltage. |
| ASI | – | 4 | I | Auto start External input. Internal 200kΩ pull-down. |
| ASO | – | 6 | O | Auto Start Logic Output |
| NC | 6 | – | NA | Do not make a connection to this terminal (for internal use) – Do not route through this terminal |
| Thermal Pad and Package | Pad 2x2mm2 |
Pad 2x2mm2 |
– | Connect exposed thermal pad to VSS terminal of the device and main ground plane. The thermal pad must be connected to the same potential as the VSS terminal on the printed circuit board. Do not use the thermal pad as the primary ground input for the device. VSS terminal must be connected to ground at all times. |
(1) Spins have different terminal definitions