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參數(shù)資料
| 型號： | XC6415 |
| 廠商： | TOREX SEMICONDUCTOR LTD. |
| 英文描述： | Dual LDO Regulators with ON/OFF Switch |
| 中文描述： | 與對雙LDO穩(wěn)壓器/ OFF開關(guān) |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 478K |
| 代理商： | XC6415 |
7/20
XC6415
Series
OPERATIONAL DESCRIPTION
<Output Voltage Control>
The voltage divided by resistors Rx1 and Rx2 is compared with the internal reference voltage by the error amplifier. The
P-channel MOSFET which is connected to the V
OUT
pin is then driven by the subsequent output signal. The output voltage at
the V
OUT
pin is controlled and stabilized by a system of negative feedback. The current limit circuit and short protect circuit
operate in relation to the level of output current. Further, the IC's internal circuitry can be shutdown via the EN pin's signal.
<CL Auto-Discharge Function>
XC6415xB/Bx series can quickly discharge the electric charge at the output capacitor (C
L
), when a low signal to the EN pin,
which enables a whole IC circuit put into OFF state, is inputted via the N-channel transistor located between the V
OUT
pin
and the V
SS
pin (cf. BLOCK DIAGRAM). The C
L
discharge resistance is set to 780
4.0V (TYP.). Moreover, discharge time of the output capacitor (C
L
) is set by the C
L
auto-discharge resistance (R) and the
output capacitor (C
L
). By setting time constant of a C
L
auto-discharge resistance value [R] and an output capacitor value
(C
L
) as
(
=C x R), the output voltage after discharge via the N channel transistor is calculated by the following formulas.
V = V
OUT
x e
, or
ｔ=τln（ V
OUT
(E) / V ）
( V : Output voltage after discharge, V
OUT(E)
: Output voltage, t: Discharge time,
: C
L
auto-discharge resistance R
Output capacitor (C
L
) value C)
C
L
high-speed discharge function can be set by each regulator.
when V
IN
is 6.0V (TYP.) and V
OUT
is
<Current Limiter, Short-Circuit Protection>
The XC6415 series includes a fold-back circuit, which aid the operations of the current limiter and circuit protection. When
the load current reaches the current limit level, the fold-back circuit operates and output voltage drops. As a result of this
drop in output voltage, output current also decreases. When the output pin is shorted, a current of about 30mA flows.
<EN Pin>
The IC's internal circuitry can be shutdown via the signal from the EN pin with the XC6415 series. In shutdown mode,
output at the V
OUT
pin will be pulled down to the V
SS
level via Rx1 & Rx2. However, as for the XC6415xB/Bx series, the
C
L
auto-discharge resistor is connected in parallel to Rx1 and Rx2 while the power supply is applied to the V
IN
pin.
Therefore, time until the V
OUT
pin reaches the V
SS
level becomes short. The output voltage becomes unstable, when the
EN pin is open. If this IC is used with the correct output voltage for the EN pin, the logic is fixed and the IC will operate
normally. However, supply current may increase as a result of through current in the IC's internal circuitry when medium
voltage is input.
1
.
Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be
exceeded.
2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output
current. Please wire the input capacitor (C
IN
) and the output capacitor (C
L
) as close to the IC as possible.
NOTES ON USE
< XC6415BB Series >
相關(guān)PDF資料 |
PDF描述 |
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| XC641A | CMOS Low Power Consumption |
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| XC651A4 | CMOS Low Power Consumption |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XC6415_1 | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:Dual LDO Regulators with ON/OFF Switch |
| XC6415AA017R-G | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:Dual LDO Regulators with ON/OFF Switch |
| XC6415AA01ER | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:Dual LDO Regulators with ON/OFF Switch |
| XC6415AA01ER-G | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:Dual LDO Regulators with ON/OFF Switch |
| XC6415AA01MR | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:Dual LDO Regulators with ON/OFF Switch |
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