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參數(shù)資料
| 型號： | XC6404DE91MR |
| 廠商： | TOREX SEMICONDUCTOR LTD. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | High Current, High Speed LDO Regulators, Voltage Detector Function |
| 中文描述： | 高電流，高速LDO穩(wěn)壓器，電壓檢測功能 |
| 文件頁數(shù)： | 26/54頁 |
| 文件大?。?/td> | 544K |
| 代理商： | XC6404DE91MR |
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XC6404 Series
High Current, High Speed LDO Regulators,
Voltage Detector Function
!
OPERATIONAL EXPLANATION (Continued)
<Toggle Operation> (Continued)
For the XC6404B series, there are two types of toggle selection; one is a T-type flip-flop (T-FF) used for toggle operation which can be reset internally by
a signal directly from the voltage detector (VIN Sense type only. See also the Selection Guide on page 2). The other type is where the reset is applied
internally through a one shot pulse circuit (VIN, VROUT type only. See also the Selection Guide on page 2).
The type, which applies the reset directly via the signal from the voltage detector function, applies the voltage detector comparator's output signal (reset
signal) to the reset of T-FF reset, and turns the VR output OFF when the input voltage decreases below the detect voltage due to battery consumption,
etc.. In order to return the VR output, apply a voltage larger than the release voltage to VIN and input a toggle signal to the T-FF. In the case where
input voltage is below the release voltage, the VR output does not return even though the toggle signal is input into the T-FF.
The type which applies the reset signal to the T-FF internally via a one-shot pulse circuit changes the voltage detector comparator output signal to a one-
shot signal internally. Like the type which applies the reset directly via the signal from voltage detector function, this type also applies the reset to the T-
FF and sets the VR output to OFF when the input voltage (VIN Sense type) and output voltage (VROUT Sense type) drop below the detect voltage level.
This type can return the VR output by inputting a toggle signal, even when the Sense pin voltage (VIN or VROUT pin voltage) is below the release
voltage.
Please refer to the block diagram below and the timing chart on the following page. Please choose the option suitable to the application.
Block Diagram for XC6404B series Timing Chart
Current
limit
ON/OFF
control
Voltage
Reference
VR circuit
EN
V
SS
VR
OUT
V
IN
R1
R2
T
Q
R
toggle FF
R4
R3
Pulse
VD
OUT
Comp. VD
Error Amp.
Power ON
Clear for FF
C
FB
Optional
Toggle Signal
T-FF Reset Signal
A
B
D
C
E
F
Optional
Semiconductor Ltd.
Data Sheet
26
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