ADP1720ARMZ-3.3-R7 datasheet(4/16 Pages) AD

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ADP1720

Rev. A | Page 4 of 16

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

POWER SUPPLY REJECTION RATIO

PSRR

f = 120 Hz, VIN = 8 V, VOUT = 1.6 V

–90

f = 1 kHz, VIN = 8 V, VOUT = 1.6 V

–80

f = 10 kHz, VIN = 8 V, VOUT = 1.6 V

–60

f = 120 Hz, VIN = 8 V, VOUT = 5 V

–83

f = 1 kHz, VIN = 8 V, VOUT = 5 V

–70

f = 10 kHz, VIN = 8 V, VOUT = 5 V

–50

1 Accuracy when OUT is connected directly to ADJ. When OUT voltage is set by external feedback resistors, absolute accuracy in adjust mode depends on the tolerances

of resistors used.

2 Based on an end-point calculation using 1 mA and 50 mA loads. See Fi

for typical load regulation performance for loads less than 1 mA.

gure 6

3 Dropout voltage is defined as the input to output voltage differential when the input voltage is set to the nominal output voltage. This applies only for output

voltages above 4 V.

4 Start-up time is defined as the time between the rising edge of EN to OUT being at 95% of its nominal value.

5 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 5.0 V

output voltage is defined as the current that causes the output voltage to drop to 90% of 5.0 V, or 4.5 V.

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