XC6207_1 Datasheet, PDF (10/33 Pages) Torex Semiconductor – High Speed "Green Operation" LDO Voltage Regulators

XC6207Series
˙OPERATIONAL EXPLANATION (Continued)
<Green Operation> (Continued)
˔ Load Transient Response by GO mode
˓ GO mode (GO pin voltage: Low)
Output Current: IOUT=0.1mA˱100mA
˓ Fixed high speed mode via GO pin signal (GO pin voltage: Low to High)
Output Current: IOUT=0.1mA˱100mA
˓ GO mode (GO pin voltage: Low)
Output Current: IOUT=0.1mA˱5mA
*Note: Input a “H” level signal to the GO pin before the output
current fluctuation (˚T) occurs.
˓ Fixed high speed mode via GO pin signal (GO pin voltage: Low to High)
Output Current: IOUT=0.1mA˱5mA
<Low ESR capacitor>
With the XC6207 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 (VOUT) and the VSS pin. Please use an output
capacitor with a capacitance value of at least 1ЖF when the setting output voltage (VOUT(T)) is less than or equal to 1.8V.
Also, when the setting output voltage (VOUT(T)) is less than or equal to 2.5V, please connect an input capacitor (CIN) of
2.2ЖF between the VIN pin and the VSS pin in order to ensure a stable power input. The capacitor is possible to
decrease depends on bias and temperature. Therefore the phase compensation cannot be ensured effectiveness.
Stable phase compensation may not be ensured if the capacitor runs out capacitance when depending on bias and
temperature. In case the capacitor depends on the bias and temperature, please make sure the capacitor can ensure
the actual capacitance.
<Recommended conditions of CIN and CL>
SETTING VOLTAGE
More than 1.2V ~ Under 1.8V
More than 1.8V ~ Under 2.5V
More than 2.5V ~ Less than 5.0V
CIN (ЖF)
1.0
1.0
2.2
CL (ЖF)
4.7
1.0
1.0
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