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參數(shù)資料
| 型號： | TWL2213CAPFBR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48 |
| 封裝： | PLASTIC, TQFP-48 |
| 文件頁數(shù)： | 13/33頁 |
| 文件大?。?/td> | 498K |
| 代理商： | TWL2213CAPFBR |
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TWL2213CA
POWER SUPPLY MANAGEMENT IC AND
Li-Ion BATTERY CHARGE CONTROL
SLVS280 – MARCH 2001
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
device power supply control (VDD1)
The TWL2213 device receives device power by regulating the VCHG input to 4.1 V or 4.2 V, whenever VCHG
is available; otherwise, the device uses the VBAT input directly as device dc supply. The regulated voltage from
VCHG is programmable through the I2C interface.
BG
R1
R2
Control
Logic
Decode
V DD
VDD
VG
VG2
VG3
TWL2213
VCHG
RS
R1: Fixed
R2: Programmable
VBAT
VDD1
BG: Band Gap Voltage
_
+
–
Figure 11. Device Power Supply
Condition 1:
VCHG is on (VG = Active, VG2 = On, VG3 = Off)
V
DD1 +
BG
R1
) R2
R2
+ 4.1 V or 4.2 V
TWL2213 device sets R2 value according to the programmed voltage level (4.1 V or 4.2 V).
Condition 2:
VCHG is Off and VBAT applied (VG = High, VG2 = Off, VG3 = On)
V
DD1 +
VBAT
battery charger
The TWL2213 device provides a charger function for single cell Li-Ion battery packs. The charging activity starts
with the battery pack wake-up cycle. If the wake-up cycle completes successfully, the charger starts the
precharge function and slowly charges the battery to 3.2 V. If the battery is charged to 3.2 V within the time limit,
the charger goes into the fast charge mode. The fast charge mode has two phases: 1) constant current mode
(CC) and 2) constant voltage mode (CV). The charger starts CC mode with the maximal charging current until
the battery voltage reaches the regulated voltage level. The charger is then switched to CV mode. During the
CV mode, the TWL2213 device monitors the charging current; once it is below the programmed termination
current level, the charger activity is terminated. The termination current level can be programmed at 10%, 20%,
30%, 40%, or 50% of the maximum charging current at the CC mode.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TWL2214CA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Supply Management IC and Li-Ion Battery Charge Control |
| TWL2214CAPFB | 制造商:Rochester Electronics LLC 功能描述:POWER SUPPLY MANAGEMENT IC:LION - Bulk 制造商:Texas Instruments 功能描述:CHGR LI-ION/LI-POL 150MA 2.8V 48TQFP - Tape and Reel |
| TWL2214CAPFBR | 制造商:Rochester Electronics LLC 功能描述:POWER SUPPLY MANAGEMENT IC:LION - Bulk 制造商:Texas Instruments 功能描述:CHGR LI-ION/LI-POL 150MA 2.8V 48TQFP - Tape and Reel |
| TWL2217CGGMR | 制造商:Texas Instruments 功能描述: |
| TWL2217CZQER | 制造商:Texas Instruments 功能描述: |
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