AP2202

Document number: DS38214 Rev. 6 - 2

2 of 26

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August 2022

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AP2202

Typical Applications Circuit (Note 4)

BYP

100pF

EN

GND

AP2202-2.8

VIN=3.8V

VOUT=2.8V

2.2

F

1.0

F

VIN

VIN

VOUT

VOUT

COUT

CBYP

CIN

ADJ

EN

GND

AP2202-ADJ

R1

R2

optional

VOUT=1.25* (1+R2/R1)

VIN

1.0

F

2.2

F

VIN

CIN

VOUT

VOUT

COUT

CBYP

Note:

4. Dropout voltage is 165mV when TA = +25°C. In order to obtain a normal output voltage, VOUT+0.165V is the minimum input voltage which will result in a

Low PSRR, imposing a bad influence on system. Therefore, the recommended input voltage is VOUT+0.5V to 13.2V. For AP2202-2.8 version, its input

voltage can be set from 3.3V (VOUT+0.5V) to 13.2V. For that of ADJ version, any value from VOUT+0.5V to 13.2V is available. R1 and R2 must be correctly

selected when setting the output voltage. For example, if 3.0V output voltage is required, R1 and R2 can be set to 10k

Ω

 and 14kΩ respectively. For ADJ

version, we recommend 2.3V as minimum output voltage.

Pin Descriptions

Pin Number

Pin Name

Function

SOT-23-5

SOT-89

1

3

VIN

Input voltage

2

2

GND

Ground (TAB for SOT-89)

3

—

EN

Enable input: CMOS or TTL compatible input.

Logic high = enable, logic low = shutdown

4

—

BYP/ADJ

Bypass capacitor for low noise operation/Adjust output

5

1

VOUT

Regulated output voltage