IFX20001 View Datasheet(PDF) - Infineon Technologies

Part Name

Description

Manufacturer

IFX20001

Low Dropout Voltage Regulator

Infineon Technologies 

IFX20001

Application Information

6

Application Information

Note: The following information is given as a hint for the implementation of the device only and shall not be

regarded as a description or warranty of a certain functionality, condition or quality of the device.

VI

Inhibit

CI

100nF

I

Q

IFX20001

INH

GND

VQ

CQ

4.7µF

RQ

3.3Ω

Figure 3 Application Diagram

Application Information

The output voltage of the IFX20001 is divided and compared to an internal reference of 2.5 V typical. A regulation

loop controls the output to achieve a stabilized output voltage.

Figure 3 shows a typical application circuit. In order to maintain the stability of the control loop the IFX20001

output requires an output capacitor CQ of at least 3.3 μF with a minimum required ESR of 2.5 Ω and a maximum

allowed ESR of 6 Ω for the IFX20001MBV33 and 8 Ω for the IFX20001MBV50. It is recommended to use for CQ a

suitable tantalum capacitor or a multilayer ceramic capacitor with a sufficiently dimensioned series resistor in order

to cover the required ESR range over the full operating temperature range from -40 °C to 125 °C.1)

At the input of the regulator a capacitor is required for compensating line influences. A resistor of approximately

1 Ω in series with the input capacitor (CI) can dampen oscillations that could occur due to the input line inductance

and the input capacitor.

1) For usage of ceramic capacitors without applying an additional series resistor at the output please refer to the IFX20002

which is a corresponding voltage regulator series specially designed for the usage of low-ESR output capacitors (< 2Ω) .

Data Sheet

9

Rev. 1.1, 2013-01-08

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