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參數(shù)資料
| 型號： | DS2782 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Stand-Alone Fuel Gauge IC |
| 中文描述： | 獨(dú)立式電量計(jì)IC |
| 文件頁數(shù)： | 17/25頁 |
| 文件大?。?/td> | 291K |
| 代理商： | DS2782 |
DS2782: Stand-Alone Fuel Gauge IC
17 of 25
Calculation of Results
RAAC [mAh]
= (ACR[mVh] - AE(T) * FULL40[mVh]) * RSNSP [mhos]
RSAC
[mAh]
= (ACR[mVh] - SE(T) * FULL40[mVh]) * RSNSP [mhos]
RARC
[%]
= 100% * (ACR[mVh] - AE(T) * FULL40[mVh]) /
{(AS * FULL(T) - AE(T)) * FULL40[mVh]}
RSRC
[%]
= 100%* (ACR[mVh] - SE(T) * FULL40[mVh]) /
{(AS * FULL(T) - SE(T)) * FULL40[mVh]}
STATUS REGISTER
The STATUS register contains bits which report the device status. The bits can be set internally by the DS2782.
The CHGTF, AEF, SEF, LEARNF and VER bits are read only bits which can be cleared by hardware. The UVF and
PORF bits can only be cleared via the 2-Wire interface.
Figure 14. Status Register Format
Address
01h
Field
Bit
Format
Allowable Values
Charge Termination Flag
Set to 1 when: ( VOLT > VCHG ) AND ( 0 < IAVG < IMIN ) continuously
for a period between two IAVG register updates ( 28s to 56s ).
Cleared to 0 when: RARC < 90%
Active Empty Flag
Set to 1 when: VOLT < VAE
Cleared to 0 when: RARC > 5%
Standby Empty Flag
Set to 1 when: RSRC < 10%
Cleared to 0 when: RSRC > 15%
Learn Flag – When set to 1, a charge cycle can be used to learn battery
capacity.
Set to 1 when: ( VOLT falls from above VAE to below VAE ) AND
( CURRENT > IAE )
Cleared to 0 when: ( CHGTF = 1 ) OR ( CURRENT < +100μV ) OR
( ACR = 0 **) OR ( ACR written or recalled from EEPROM) OR ( SLEEP
Entered )
Bit Definition
CHGTF
7
Read Only
AEF
6
Read Only
SEF
5
Read Only
LEARNF
4
Read Only
Reserved
3
Read Only
Undefined
UVF
2
Read / Write *
Under-Voltage Flag
Set to 1 when: VOLT < V
SLEEP
Cleared to 0 by: User
Power-On Reset Flag – Useful for reset detection, see text below.
Set to 1 upon Power-Up by hardware.
Cleared to 0 by: User
Undefined
PORF
1
Read / Write *
Reserved
* - This bit can be set by the DS2782, and may only be cleared via the 2-Wire interface.
** - LEARNF is only cleared if ACR reaches 0 after VOLT < VAE.
0
Read Only
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2782_09 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
| DS2782BE | 制造商:Maxim Integrated Products 功能描述:STAND ALONE FG IC 2WIRE 8P TSSOP - Rail/Tube |
| DS2782BE/T&R | 制造商:Maxim Integrated Products 功能描述:STAND ALONG FG IC 2WIRE 8P TSSOP TR - Tape and Reel |
| DS2782E+ | 功能描述:電池管理 Stand-Alone Fuel Gauge RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| DS2782E+R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Stand-Alone Fuel Gauge IC |
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