--- 產品詳情 ---
Cell chemistry | NiCd |
Number of series cells | 2-4 Cells |
Communication interface | DQ |
Battery capacity (Min) (mAh) | 800 |
Battery capacity (Max) (mAh) | 2000 |
Implementation | Pack |
External capacity indication | LED |
Features | Coulomb Counter |
Operating temperature range (C) | 0 to 70 |
| |
- Conservative and repeatable measurement of available charge in rechargeable batteries
- Designed for portable equipment such as power tools with high discharge rates
- Designed for battery pack integration
- 120μA typical standby current (self-discharge estimation mode)
- Small size enables implementations in as little as ? square inch of PCB
- Direct drive of LEDs for capacity display
- Self-discharge compensation using internal temperature sensor
- Simple single-wire serial communications port for subassembly testing
- 16-pin narrow SOIC
The bq2011 Gas Gauge IC is intended for battery-pack installation to maintain an accurate record of available battery charge. The IC monitors a voltage drop across a sense resistor connected in series between the negative battery terminal and ground to determine charge and discharge activity of the battery. The bq2011 is designed for systems such as power tools with very high discharge rates.
Battery self-discharge is estimated based on an internal timer and temperature sensor. Compensations for battery temperature and rate of charge or discharge are applied to the charge, discharge, and selfdischarge calculations to provide available charge information across a wide range of operating conditions. Initial battery capacity is set using the PFC and MODE pins. Actual battery capacity is automatically "learned" in the course of a discharge cycle from full to empty and may be displayed depending on the display mode.
Nominal available charge may be directly indicated using a five-segment LED display. These segments are used to indicate graphically the nominal available charge.
The bq2011 supports a simple single-line bidirectional serial link to an external processor (common ground). The bq2011 outputs battery information in response to external commands over the serial link. To support subassembly testing, the outputs may also be controlled by command. The external processor may also overwrite some of the bq2011 gas gauge data registers.
The bq2011 may operate directly from four cells. With the REF output and an external transistor, a simple, inexpensive regulator can be built to provide VCC from a greater number of cells.
Internal registers include available charge, temperature, capacity, battery ID, and battery status.
為你推薦
-
TI數字多路復用器和編碼器SN54HC1512022-12-23 15:12
-
TI數字多路復用器和編碼器SN54LS1532022-12-23 15:12
-
TI數字多路復用器和編碼器CD54HC1472022-12-23 15:12
-
TI數字多路復用器和編碼器CY74FCT2257T2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74LVC257A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74LVC157A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74ALS258A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74ALS257A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74ALS157A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74AHCT1582022-12-23 15:12
-
電動汽車直流快充方案設計【含參考設計】2023-08-03 08:08
-
Buck電路的原理及器件選型指南2023-07-31 22:28
-
100W USB PD 3.0電源2023-07-31 22:27
-
基于STM32的300W無刷直流電機驅動方案2023-07-06 10:02
-
上新啦!開發板僅需9.9元!2023-06-21 17:43
-
參考設計 | 2KW AC/DC數字電源方案2023-06-21 17:43
-
千萬不能小瞧的PCB半孔板2023-06-21 17:34