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參數(shù)資料
| 型號(hào)： | 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)： | 29/33頁 |
| 文件大小： | 498K |
| 代理商： | TWL2213CAPFBR |
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TWL2213CA
POWER SUPPLY MANAGEMENT IC AND
Li-Ion BATTERY CHARGE CONTROL
SLVS280 – MARCH 2001
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions (Continued)
TERMINAL
I/O
DESCRIPTION
NAME
PFB NO.
I/O
DESCRIPTION
VREG1
6
O
Regulator 1 output
VREG2
13
O
Regulator 2 output
VREG3
15
O
Regulator 3 output
VREG4
18
O
Regulator 4 output
VREG5
20
O
Regulator 5 output
VREG6
10
O
Regulator 6 output
XRST
7
O
Reset output
detailed description
power on/off control
The power on/off control circuit controls the timing of the delayed power on reset. There are two different reset
conditions: the manual power condition and the adapter power-on condition.
Under the manual-powered condition, if the power key is pressed, the PWRKIN signal goes high and VREG1
(regulator 1 output) is enabled. After VREG1 reaches 90% of its nominal output voltage, the TWL2213 starts the
delayed reset process by charging the reset timing capacitor (CD1). When the voltage of CD1 reaches 1.2 V,
the XRST signal is released by TWL2213 and is pulled high by an external pull-up resistor. This completes the
reset process, and the external controller operates in normal condition. While the PWRKIN signal remains high,
the power-on condition remains active. Before the PWRKIN signal goes low, the external controller must drive
PSH high to retain power; otherwise, the TWL2213 starts the delay power-off process by charging the CD2
timing capacitor. After the voltage of CD2 reaches 1.2 V and no valid PSH signal is received, the device is
powered off.
Under the adapter power-on condition, no battery is attached to the device. During the power-off state, after the
adapter is attached, the output of VREG1 (regulator 1 output) is automatically enabled. After VREG1 reaches 90%
of its nominal output voltage, the TWL2213 starts the delayed reset process by charging the reset timing
capacitor (CD1). When the voltage of CD1 reaches 1.2 V, the XRST signal is released by TWL2213 and is pulled
high by an external pull-up resistor. This completes the reset process, and the external controller operates in
normal condition. The external controller must drive PSH high to retain power; otherwise, the TWL2213 starts
the delay power-off process by charging the CD2 timing capacitor. After the voltage of CD2 reaches 1.2 V and
no valid PSH signal is received, the device is powered off.
During the power-on state, the device generates an output signal (PWRKOUT) with the inverted polarity to
PWRKIN. The external controller can use the PWRKOUT signal to detect power key action.
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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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