Data Sheet

ADPL40502

analog.com

Rev. 0

4 of 17

(VIN = (VOUT + 0.4 V) or 2.2 V, whichever is greater, VEN = VIN, IOUT = 10mA, CIN = COUT = 1µF, and TA = -40°C to +125°C (Typ

values at 25°C), unless otherwise noted. Note that VIN is the input voltage, VOUT is the output voltage, IOUT is the

output current, CIN is the input capacitance, and COUT is the output capacitance.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Output Noise

OUTNOISE

10Hz to 100kHz, VIN = 5V,

VOUT = 3.3V

20

µVRMS

10Hz to 100kHz, VIN = 5V,

VOUT = 2.5V

20

µVRMS

Power Supply Rejection Ratio

Power Supply Rejection

Ratio

PSRR

10kHz, VIN = 3.8V to 4.3V,

VOUT = 3.3V, IOUT = 10mA

70

dB

100kHz, VIN = 3.8V to 4.3V,

VOUT = 3.3V, IOUT = 10mA

55

dB

1

Based on an end-point calculation using 0.1mA and 200mA loads. See Figure 6 for typical load regulation

performance for loads less than 1mA

2

Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the

nominal output voltage. This voltage applies only for output voltages above 2.2V.

3

Start-up time is defined as the time between the rising edge of EN and VOUT being at 90% of its nominal value.

4

Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified

typical value. For example, the current limit for a 3.0V output voltage is defined as the current that causes the

output voltage to drop to 90% of 3.0V (i.e., 2.7V).

Table 2. Input and Output Capacitor, Recommended Specifications

(INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS)

PARAMETER

SYMBOL

CONDITIONS

COMMENTS

MIN

TYP MAX UNITS

Minimum Input and

Output Capacitance1

CMIN

TA = −40°C to +125°C

0.7

µF

Capacitor ESR

RESR

TA = −40°C to +125°C

0.001

0.2

Ω

1

The minimum input and output capacitance must be greater than 0.7μF over the full range of operating

conditions. The full range of operating conditions in the application must be considered during device

selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are

recommended, and Y5V and Z5U capacitors are not recommended for use with any low dropout (LDO)

regulator.