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參數(shù)資料
| 型號： | XC6413 |
| 廠商： | TOREX SEMICONDUCTOR LTD. |
| 英文描述： | High Speed LDO Regulators |
| 中文描述： | 高速LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 132K |
| 代理商： | XC6413 |
<Output voltage regulator control>
The voltage divided by resistors R1 & R2 which are connected to VROUT pin is compared with the internal reference voltage by the error amplifier. The
P-Channel MOSFET, which is connected to the VOUT pin, is then driven by the subsequent output signal. The output voltage at the VROUT pin is
controlled & 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 voltage regulator's internal circuitry can be
shutdown via the CE pin's signal.
<Detector function with the XC6413 series>
The voltage divided by resistors R3 & R4 which are connected to VROUT pin, VIN or VSEN pin are compared with the internal reference voltage by the
compalator. Option is available for the VDSEN. A 'High' or 'Low' signal level can be output from the VDOUT pin when the VD pin voltage level of less
than the detect voltage is reached. Option is available for the VD output logic. As VDOUT is an open-drain N-channel output, a pull-up resistor of about
220K
is needed to achieve a voltage output. Because of hysterisis at the detector function, output at the VDOUT pin will invert when the detect voltage
level increase more than the release voltage (105% of the detect voltage). Even when the XC6413A, B, C, series are in stand-by mode, the voltage
detector function operates and the output voltage at VDOUT will output according to the voltage level at VDSENSE voltage.
<Low ESR Capacitors>
With the regulator of XC6413 series, a stable output voltage is achievable even if used with low ESR capacitors as a phase compensation circuit is built-
in. In order to ensure the effectiveness of the phase compensation, we suggest that an output capacitor (CL) is connected as close as possible to the
output pin (VROUT) and the VSS pin. Please use an output capacitor (CL) with a capacitance refering to the chart below, and an 1
μ
F of input capacitor
(CIN) be connected between VIN and VSS to stabilize input power source.
<Current Limiter, Short-Circuit Protection>
The regulator of XC6413 series offers a combination of current limit and circuit protection by means of a built-in fixed current limiter circuit & a foldback
circuit. When the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops. As a result of this drop in
output voltage, the foldback circuit operates, output voltage drops further and output current decreases. When the output pin is shorted, a current of
about 50mA flows.
<EN / CE Pin>
The IC's internal regulator circuitry can be shutdown via the signal from the EN pin with the XC6413A, B, C series. In shutdown mode, output at the
VROUT pin will be pulled down to the VSS level via R1 & R2. The whole IC's circuitry can be shut down via CE pin with the XC6413D series and power
consumption can be reduced to around 0
μ
A. In shutdown mode, output of VD is voltage after detecting. When choosing Detect L, input current can be
set by the following formula.
VROUT
CL
0.9 ~ 1.2V
more than 4.7
μ
F
Low Active with no pull up
Note that as the XC6413*E to K of XC6413A to D series are 'High Active/No Pull Down' and XC6413*R to U of XC6413A to D series are 'Low Active/No
Pull UP', operations will become unstable with the CE pin open (See the chart below).
SERIES
EN/CE INPUT LOGIC
1.3 ~ 1.7V
more than 2.2
μ
F
Input Current = V
IN
voltage / Pull Up Resistance
In standby mode, the above input current can be withheld by connecting pull-up resistance between VROUT and VDOUT.
In stand-by, if a voltage of the recovery voltage is present at the VROUT pin (from another power source), the VDOUT pin will be high impedance and
pull up voltage will be output at VDOUT. By connecting Cdelay pin to a capacitor (Cd), XC6413F series can put delay time to VDOUT voltage when
releasing voltage. Delay time can be set by the internal resistance (2M
fixed) and the value of Cd as the following equation.
Delay Time = Cdelay x Rdelay x 0.7
High Speed LDO Regulators
Low ESR Cap. Compatible, Voltage Detector Function
We suggest that you use this IC with either a VIN voltage or a VSS voltage input at the EN or CE pin. If this IC is used with the correct specifications for
the EN or CE pin, the IC will operate normally. However, supply current may increase as a result of through current in the IC's internal circuitry if a
voltage other than VIN or VSS is applied.
XC6413 * R ~ U
XC6413 Series
XC6413 * L ~ P
Low Active with pull up
XC6413 * A ~ D
High Active with pull down
XC6413 * E ~ K
High Active with no pull down
Semiconductor Ltd.
12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XC6414 | High Current, High Speed LDO Regulators, Voltage Detector Function |
| XC6415 | Dual LDO Regulators with ON/OFF Switch |
| XC641A | CMOS Low Power Consumption |
| XC641A0001V | CMOS Low Power Consumption |
| XC651A | CMOS Low Power Consumption |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XC6413_1 | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:High Current, High Speed LDO Regulators, Voltage Detector Function |
| XC6414 | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:High Current, High Speed LDO Regulators, Voltage Detector Function |
| XC6415 | 制造商:TOREX 制造商全稱:Torex Semiconductor 功能描述:Dual LDO Regulators with ON/OFF Switch |
| 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 |
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