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參數資料
| 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： | 31/33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
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
Auto power up with
adapter insertion
Adapter Attachment
VG3
VG2
VDD
PWRKIN
VREG1
PWRKOUT
CD1
XRST
PSH
CD2
0.9 VOUT
CD1
Delay
VCHG
Power down by
power key insertion
CPU senses this falling
edge and drives PSH to L
Figure 2. Power-On/-Off Sequence
reset controller
The reset controller performs two major functions; one is to control the timing of delayed power-on reset, and
the other is to monitor the VREG1 level.
The delay reset process is started when VREG1 (regulator 1 output) reaches 90% of its nominal output voltage
level. The delay time of the reset output (XRST) can be adjusted by external timing capacitance (CD1) (see
Figure 1, and Figure 2).
During system active state when VREG1 drops below 0.9Vnominal – hysteresis, XRST is driven low. If VREG1
reaches 90% of its nominal output voltage level again, the delayed reset process starts over.
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相關代理商/技術參數 |
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| 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 |
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